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You searched for: Publication Year 2001 Remove constraint Publication Year: 2001 Subject term agricultural land Remove constraint Subject term: agricultural land
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1. Adaptation of Senecio vulgaris (Asteraceae) to ruderal and agricultural habitats

Author:
Leiss, K.A.; Muller-Scharer, H.
Source:
American journal of botany 2001 v.88 no.9 pp. 1593-1599
ISSN:
0002-9122
Subject:
Senecio vulgaris; weed biology; agricultural land; nutrient availability; fecundity; sexual reproduction; genotype; genetic variation; habitats; leaves; Switzerland
Abstract:
... Adaptation of the annual plant Senecio vulgaris to ruderal and agricultural habitats was investigated. We expected S. vulgaris to be adapted to the agricultural habitat through nutrient-specific differentiation of relatively few genotypes responding to the generally high homogenous nutrient levels at the agricultural habitat caused by constant fertilization. To assess adaptation of S. vulgaris, ve ...
PubMed:
21669692

2. Aggregation and temporal stability of carabid beetle distributions in field and hedgerow habitats

Author:
Thomas C.F.G.; L. Parkinson; G.J.K. Griffiths; A. Fernandez Garcia; E.J.P. Marshall
Source:
Journal of applied ecology 2001 v.38 no.1 pp. 100-116
ISSN:
0021-8901
Subject:
Harpalus rufipes; Nebria brevicollis; adverse effects; agricultural land; dissociation; edge effects; habitats; insects; pesticide application; pitfall traps; population; population distribution; precision agriculture; predators; sampling; spatial distribution
Abstract:
... 1 Understanding the spatial dynamics of insect distributions in farmland can provide insights into their ecological requirements and potential for management. Identifying the scale, location and persistence of species’ aggregations is an important step towards understanding the factors driving population distributions. This study examined how different carabid species were distributed in field and ...
DOI:
10.1046/j.1365-2664.2001.00574.x

3. Agricultural biotechnology: reducing poverty in developing countries

Author:
Zeigler, R.S.
Source:
Plant disease 2001 v.85 no.6 pp. 568-579
ISSN:
0191-2917
Subject:
plant viruses; diet; malnutrition; anemia; poverty; irrigation; agricultural land; developing countries; biotechnology; nutritive value; crop yield; food security; mycotoxins; population growth; carcinogens; agriculture; urbanization; preschool children; crops
DOI:
10.1094/PDIS.2001.85.6.568

4. Agricultural contaminants in Quaternary aquitards: A review of occurrence and fate in North America

Author:
Rodvang; Simpkins
Source:
Hydrogeology journal 2001 v.9 no.1 pp. 44-59
ISSN:
1431-2174
Subject:
agricultural land; aquifers; denitrification; dissolved organic carbon; groundwater; hydraulic conductivity; loess; nitrates; nutrients; pathogens; pesticides; pyrite; shale; sorption; subsurface drainage; sulfur; surface water; trace elements; North America
Abstract:
... The intensity of agriculture has increased significantly during the past 30 years, resulting in increased detection of agricultural contaminants (nutrients, pesticides, salts, trace elements, and pathogens) in groundwater. Till, glaciolacustrine, and loess deposits of Quaternary age compose the most common surficial deposits underlying agricultural areas in North America. Quaternary aquitards gene ...
DOI:
10.1007/s100400000114

5. Agricultural land expansion and deforestation in Malawi

Author:
Minde, I.J.; Kowero, G.; Ngugi, D.; Luhanga, J.
Source:
Forests, trees and livelihoods 2001 v.11 no.2 pp. 167-182
ISSN:
1472-8028
Subject:
Zea mays; income; poverty; food marketing; agricultural land; prices; drought; livestock; deforestation; Nicotiana tabacum; population density; charcoal; land use; issues and policy; conservation areas; forests; Malawi
DOI:
10.1080/14728028.2001.9752384

6. Agriculture in transition economies: from common heritage to divergence

Author:
Lerman, Z.
Source:
Agricultural economics 2001 v.26 no.2 pp. 95-114
ISSN:
0169-5150
Subject:
gross national product; economic development; large farms; gross domestic product; agricultural land; cluster analysis; farming systems; land reform; agriculture; privatization; Central European region
Abstract:
... The 23 former socialist countries in Central and Eastern Europe (CEE) and the Commonwealth of Independent States (CIS) started the transition in l989-1990 from a common institutional and organizational heritage, represented by the Soviet agricultural model. Despite the common heritage in agriculture, the reform policies in CEE and CIS diverged from the start, as significant differences emerged bet ...
DOI:
10.1111/j.1574-0862.2001.tb00057.x

7. Assessing Site Vulnerability to Phosphorus Loss in an Agricultural Watershed

Author:
Andrew N. Sharpley; Richard W. McDowell; Jennifer L. Weld; Peter J. A. Kleinman
Source:
Journal of environmental quality 2001 v.30 no.6 pp. 2026-2036
ISSN:
1537-2537
Subject:
water pollution; land classification; animal manures; fields; leaching; risk assessment; watersheds; losses from soil; nonpoint source pollution; rain; soil fertility; manure spreading; phosphorus; water erosion; runoff; Revised Universal Soil Loss Equation; nutrient management; Pennsylvania
Abstract:
... A P index was developed as a tool to rank agricultural fields on the basis of P loss vulnerability, helping to target remedial P management options within watersheds. We evaluated two approaches, a soil P threshold and components of a P index, by comparing site vulnerability estimates derived from these two approaches with measured runoff P losses in an agricultural watershed in Pennsylvania. Rain ...
Handle:
10113/12926
DOI:
10.2134/jeq2001.2026
PubMed:
11790010

8. Benefits and constraints for use of FGD products on agricultural land

Author:
Clark, R.B.; Ritchey, K.D.; Baligar, V.C.
Source:
Fuel 2001 v.80 no.6 pp. 821-828
Subject:
agricultural land; soil amendments; waste utilization; industrial wastes; nutrients; nutrient content; soil pH; soil physical properties; trace elements; agricultural soils; acid soils; infiltration (hydrology); soil fertility; soil toxicity
Abstract:
... Considerable amounts of coal combustion products (CCPs) are generated when coal is burned for generation of electricity. To meet Clean Air standards, large amounts of S must not be emitted into the atmosphere, which means considerable amounts of flue gas desulfurization products (FGDs) are and will be produced. Beneficial uses of FGDs are continually being sought to reduce waste, decrease cost of ...
Handle:
10113/3312
DOI:
10.1016/S0016-2361(00)00162-9

9. Birds Breeding in a Changing Farmland*

Author:
Schifferli Luc
Source:
Acta ornithologica 2001 v.36 no.1 pp. 35-51
ISSN:
0001-6454
Subject:
agricultural land; birds; breeding; case studies; crops; ecosystems; farming systems; food availability; foraging; habitats; nestlings; parents; population; population dynamics; rearing; vegetation; Europe
Abstract:
... As a result of intensified agriculture, farmland in Europe is the habitat where the most pronounced changes have occurred in recent decades. In parallel, breeding populations of birds have been declining over much of Europe. Today, farmland has the largest proportion of Red-List species. This paper reviews studies on the impact of agriculture on birds breeding in the farmland ecosystems of Europe: ...
DOI:
10.3161/068.036.0112

10. CO2 emission from mineral soils following land-cover change in Brazil

Author:
Bernoux, M.; Carvalho, M. da C.S.; Volkoff, B.; Cerri, C.C.
Source:
Global change biology 2001 v.7 no.7 pp. 779-787
ISSN:
1354-1013
Subject:
carbon dioxide; mineral soils; agricultural land; geographical variation; forest soils; emissions; environmental impact; land use; forests; Brazil
DOI:
10.1046/j.1354-1013.2001.00446.x

11. Calibrating Inpuff-2 Model by Resident-Panelists for Long-Distance Odor Dispersion from Animal production Sites

Author:
Guo, H.; Jacobson, L.D.; Schmidt, D.R.; Nicolai, R.E.
Source:
Applied engineering in agriculture 2001 v.17 no.6 pp. 859-868
ISSN:
0883-8542
Subject:
agricultural land; air; animal production; cattle; farms; models; odor emissions; odors; poultry; swine; weather
Abstract:
... An air dispersion model, INPUFF-2, was calibrated for long-distance odor estimation. Odor events were monitored from June to November 1999 by 19 trained resident-panelists living on a 4.8 x 4.8 km (3 x 3 miles) grid of farmland containing 20 livestock/poultry farms. The panelists used a numerical 0 to 3 scale to assess the odor intensity. To convert odor intensity to concentration, the correlation ...

12. Carbon and nitrogen mineralization in cultivated and natural savanna soils of Northern Tanzania

Author:
Glaser, B.; Lehmann, J.; Fuhrboter, M.; Solomon, D.; Zech, W.
Source:
Biology and fertility of soils 2001 v.33 no.4 pp. 301-309
ISSN:
0178-2762
Subject:
termite mounds; mineralization; logging; sulfur; agricultural soils; animal manures; zinc; nitrogen; nutrient availability; agricultural land; calcium; savanna soils; carbon; charcoal; woodlands; Tanzania
Abstract:
... In the present study, soil C and N mineralization and nutrient availability were compared: (1) in savanna woodland soils under natural acacia vegetation; (2) at termite sites; (3) in degraded woodland where acacias were selective logged for charcoal production; (4) in agricultural fields which were cultivated for 3 and 15 years, and (5) in traditional homestead fields which regularly received anim ...
DOI:
10.1007/s003740000324

13. Carbon dynamics within agricultural and native sites in the loess region of western Iowa

Author:
Manies, K.L.; Harden, J.W.; Kramer, L.; Parton, W.J.
Source:
Global change biology 2001 v.7 no.5 pp. 545-555
ISSN:
1354-1013
Subject:
carbon dioxide; agricultural land; gas exchange; soil organic matter; loess soils; spatial variation; field experimentation; prairies; Iowa
DOI:
10.1046/j.1354-1013.2001.00427.x

14. Comparing a process-based agro-ecosystem model to the IPCC methodology for developing a national inventory of N2O emissions from arable lands in China

Author:
Li, C.; Zhuang, Y.; Cao, M.; Crill, P.; Dai, Z.; Frolking, S.; Moore, B. III.; Salas, W.; Song, W.; Wang, X.
Source:
Nutrient cycling in agroecosystems 2001 v.60 no.1/3 pp. 159-175
ISSN:
1385-1314
Subject:
nitrous oxide; estimation; measurement; agricultural land; ecosystems; weather; nitrogen fertilizers; stocking rate; soil; land management; geographical distribution; application rate; China
Abstract:
... Nations are now obligated to assess their greenhouse gas emissions under the protocols of Article 4 of the United Nations Framework Convention on Climate Change. The IPCC has developed 'spreadsheet-format' methodologies for countries to estimate national greenhouse gas emissions by economic sector. Each activity has a magnitude and emission rate and their product is summed over all included activi ...

15. Contamination of river water by Cryptosporidium parvum oocysts in western Japan

Author:
Ono, K.; Tsuji, H.; Rai, S.K.; Yamamoto, A.; Masuda, K.; Endo, T.; Hotta, H.; Kawamura, T.; Uga, S.
Source:
Applied and environmental microbiology 2001 v.67 no.9 pp. 3832-3836
ISSN:
0099-2240
Subject:
Cryptosporidium parvum; oocysts; water pollution; runoff; agricultural land; restriction fragment length polymorphism; cattle manure; livestock production; river water; Japan
Abstract:
... In Japan, only a few rivers have been inspected for Cryptosporidium parvum contamination, and the methods used had low sensitivity. In 1998 and 1999, we used a method with higher sensitivity to examine all large rivers used as sources of water supply in one prefecture (which we divided into four areas) in western Japan for Cryptosporidium oocysts. One sample was collected at each of 156 sites alon ...
DOI:
10.1128/AEM.67.9.3832-3836.2001
PubMed:
11525974
PubMed Central:
PMC93098

16. Contribution of base flow to nonpoint source pollution loads in an agricultural watershed

Author:
Schilling, K.E.; Wolter, C.F.
Source:
Ground water 2001 v.39 no.1 pp. 49-58
ISSN:
0017-467X
Subject:
water pollution; atrazine; overland flow; water quality; sulfates; fields; seepage; herbicide residues; chlorides; groundwater flow; streams; tile drainage; surface water; groundwater; drainage water; nitrates; crops; Iowa
DOI:
10.1111/j.1745-6584.2001.tb00350.x

17. Determining nutrient export coefficients and source loading uncertainty using in-stream monitoring data

Author:
McFarland, A.M.S.; Hauck, L.M.
Source:
Journal of the American Water Resources Association 2001 v.37 no.1 pp. 223-236
ISSN:
1093-474X
Subject:
Monte Carlo method; water quality; uncertainty; nitrogen; agricultural land; watershed management; urban areas; uncertainty analysis; watersheds; nonpoint source pollution; nutrients; land use; phosphorus; Texas
Abstract:
... Over a three-year period, flow and nutrients were monitored at 13 sites in the upper North Bosque River watershed in Texas. Drainage areas above sampling sites differed in percent of dairy waste application fields, forage fields, wood/range, and urban land area. A multiple regression approach was used to develop total phosphorus (TP) and total nitrogen (TN) export coefficients for the major land u ...
DOI:
10.1111/j.1752-1688.2001.tb05488.x

18. Do assembly rules for bird communities operate in small, fragmented woodlands in an agricultural landscape?

Author:
R. J. Pakeman; S. A. Hinsley; P. E. Bellamy
Source:
Community ecology 2001 v.1 no.2 pp. 171-179
ISSN:
1585-8553
Subject:
agricultural land; birds; breeding sites; foraging; habitat fragmentation; interspecific competition; population density; woodlands
Abstract:
... The favoured state approach sensu Fox (1987) was used to investigate the existence of assembly rules for woodland bird communities in an agricultural landscape. When birds were classified according to gross breeding habitat requirements, year-round resident, .true. woodland species showed an excess of favoured states suggesting a possible assembly rule. There was weaker evidence for a similar asse ...
DOI:
10.1556/ComEc.1.2000.2.7

19. Do land-use patterns influence nest-site selection by burrowing owls (Athene cunicularia hypugaea) in northeastern Colorado?

Author:
Orth, P.B.; Kennedy, P.L.
Source:
Canadian journal of zoology 2001 v.79 no.6 pp. 1038-1045
ISSN:
0008-4301
Subject:
nesting; habitats; habitat destruction; land use; prairies; agricultural land; Cynomys ludovicianus; geographic information systems; spatial variation; habitat fragmentation; irrigated conditions; nesting sites; Colorado
DOI:
10.1139/z01-071

20. Drainage reduction under land retirement over shallow water table

Author:
Purkey, D.R.; Wallender, W.W.
Source:
Journal of irrigation and drainage engineering 2001 v.127 no.1 pp. 1-7
ISSN:
0733-9437
Subject:
drainage; agricultural land; land policy; land use; models; California
DOI:
10.1061/(ASCE)0733-9437(2001)127:1(1)

21. The Effect of Farmland Preservation Programs on Farmland Prices

Author:
Cynthia J. Nickerson; Lori Lynch
Source:
American journal of agricultural economics 2001 v.83 no.2 pp. 341-351
ISSN:
0002-9092
Subject:
agricultural land; land values; land use; land policy; costs and returns; state government; local government; equations; laws and regulations; urbanization; Maryland
Abstract:
... Government agencies in urbanizing areas are increasingly utilizing purchase and transfer of development rights programs to preserve farmland and protect local farm economies. This article tests the effect of development restrictions imposed by permanent easement sales on farmland sales prices, using Maryland data. We correct for selectivity bias due to the voluntary nature of these programs in est ...
Handle:
10113/43517
DOI:
10.1111/0002-9092.00160

22. Effect of Land Use on Methane Flux from Soil

Author:
A.S.K. Chan; T.B. Parkin
Source:
Journal of environmental quality 2001 v.30 no.3 pp. 786-797
ISSN:
1537-2537
Subject:
air pollution; methane; gas emissions; quantitative analysis; ecosystems; agricultural land; forests; prairies; land use; climatic factors; global warming; soil chemistry; seasonal variation; Iowa
Abstract:
... The precise effects of natural and disturbed terrestrial systems on the atmospheric CH₄ pool are uncertain. This study was conducted to quantify and compare CH₄ fluxes from a variety of ecosystems in central Iowa. We investigated agricultural systems under different management practices, a hardwood forest site, native and restored prairies, and a municipal landfill. Flux measurements were obtained ...
Handle:
10113/23678
DOI:
10.2134/jeq2001.303786x
PubMed:
11401268

23. Effects of Spent Mushroom Substrate Weathering on the Chemistry of Underlying Soils

Author:
Mingxin Guo; Jon Chorover; Richard H. Fox
Source:
Journal of environmental quality 2001 v.30 no.6 pp. 2127-2134
ISSN:
1537-2537
Subject:
C horizons; agricultural land; anions; calcium; cations; chlorides; dissolved organic matter; edaphic factors; electrical conductivity; fallow; grasses; groundwater; inorganic ions; leachates; magnesium; nitrates; potassium; sodium; soil pH; soil sampling; solutes; spent mushroom compost; total organic carbon; water quality; water solubility; water supply; weathering
Abstract:
... Passive weathering of heaped material in the field is a popular method for treating spent mushroom substrate (SMS) before its reuse. During the weathering process, leachate containing high concentrations of dissolved organic matter and inorganic salts is released into the underlying soils, but effects on soil and ground water quality remain uncertain. We conducted a field study to measure the effe ...
DOI:
10.2134/jeq2001.2127

24. Effects of age and distance on the composition of mixed deciduous forest fragments in an agricultural landscape

Author:
Hans Jacquemyn; Jan Butaye; Myriam Dumortier; Martin Hermy; Noël Lust
Source:
Journal of vegetation science 2001 v.12 no.5 pp. 635-642
ISSN:
1100-9233
Subject:
agricultural land; deciduous forests; habitat fragmentation; habitats; land use; landscapes; species diversity; Belgium
Abstract:
... Forest patches in central Belgium were inventoried twice for the presence or absence of forest plant species to study the effects of age and distance on species composition. All forests in the study area were subdivided based on their land use history. To avoid effects of autocorrelated environmental characteristics on species composition, habitat homogeneity was indirectly investigated using a TW ...
DOI:
10.2307/3236903

25. Effects of increased nutrient supply on bryophytes in montane calcareous fens

Author:
A. Bergamini; D. Pauli
Source:
Journal of bryology 2001 v.23 no.4 pp. 331-339
ISSN:
1743-2820
Subject:
Bryum; agricultural land; bryology; fens; light intensity; nitrogen; phenotypic plasticity; phytomass; risk; vascular plants; Switzerland
Abstract:
... A fertilization experiment was carried out in 18 nutrient-poor calcareous fens in Switzerland in order to investigate the effects of nutrient enrichment on bryophytes. Plots were fertilized with N or NPK, to simulate enhanced atmospheric nitrogen deposition and the influx of a nutrient cocktail from adjacent farmland, respectively. Despite large floristic differences between sites, the response of ...
DOI:
10.1179/jbr.2001.23.4.331

26. Effects of predation on community assembly and spatial dispersion of breeding forest birds

Author:
Jukka T. Forsman; Mikko Mönkkönen; Markku Hukkanen
Source:
Ecology 2001 v.82 no.1 pp. 232-244
ISSN:
0012-9658
Subject:
Accipiter; agricultural land; breeding; forest types; habitats; hawks; landscapes; nesting; population density; predation; predator-prey relationships; predators; prey species; risk; spatial distribution
Abstract:
... In a landscape context, nesting avian predators cause variation in predation risk with respect to the distance to their nests, which may have both direct (predation) and indirect (predation risk) effects on the prey community. We studied the community assembly and spatial distribution of a breeding forest bird community in a structurally complex forest landscape surrounding forest‐hunting Sparrowh ...
DOI:
10.1890/0012-9658(2001)082[0232:EOPOCA]2.0.CO;2

27. Elbe river flood peaks and postwar agricultural land use in East Germany

Author:
R. van der Ploeg; P. Schweigert
Source:
Naturwissenschaften 2001 v.88 no.12 pp. 522-525
ISSN:
0028-1042
Subject:
agricultural land; arable soils; climate change; collectivization; farms; land use; rivers; runoff; German Democratic Republic
Abstract:
... Collectivization of farmland since the 1950s has changed the agricultural land use in former East Germany. Single fields on the collective farms became increasingly large and were cultivated with increasingly heavy farm equipment. This led to large-scale physical degradation of arable soils, enhancing the formation of surface runoff in periods with prolonged and excessive precipitation. The extent ...
DOI:
10.1007/s00114-001-0271-1
PubMed:
11824225

28. Enhancing insect diversity in agricultural grasslands: the roles of management and landscape structure

Author:
Di Giulio, M.; Edwards, P.J.; Meister, E.
Source:
Journal of applied ecology 2001 v.38 no.2 pp. 310-319
ISSN:
0021-8901
Subject:
range management; Heteroptera; agricultural land; species diversity; grasslands; Switzerland
DOI:
10.1046/j.1365-2664.2001.00605.x

29. Enhancing the carbon sink in European agricultural soils: including trace gas fluxes in estimates of carbon mitigation potential

Author:
Smith, P.; Goulding, K.W.; Smith, K.A.; Powlson, D.S.; Smith, J.U.; Falloon, P.; Coleman, K.
Source:
Nutrient cycling in agroecosystems 2001 v.60 no.1/3 pp. 237-252
ISSN:
1385-1314
Subject:
agricultural soils; carbon; climate change; methane; gases; forestry; land use; animal manures; sewage sludge; no-tillage; crop rotation; woodlands; bioenergy; agricultural land; ecosystems; environmental impact; Europe
Abstract:
... The possibility that the carbon sink in agricultural soils can be enhanced has taken on great political significance since the Kyoto Protocol was finalised in December 1997. The Kyoto Protocol allows carbon emissions to be offset by demonstrable removal of carbon from the atmosphere. Thus, forestry activities (Article 3.3) and changes in the use of agricultural soils (Article 3.4) that are shown t ...

30. Estimates of N2O and CH4 fluxes from agricultural lands in various regions in Europe

Author:
Boeckx, P.; Cleemput, O. van.
Source:
Nutrient cycling in agroecosystems 2001 v.60 no.1/3 pp. 35-47
ISSN:
1385-1314
Subject:
estimation; agricultural land; methane; oxidation; administrative management; measurement; land use; grasslands; intensive farming; Belgium
Abstract:
... According to the revised 1996 IPCC guidelines, several emission factors are needed to calculate national inventories of N2O emissions from agriculture. To estimate the direct N2O emissions from mineral soils, an emission factor of 0.0125 kg N2O-N per kg N applied is currently being used. From recent literature data it was clearly shown that real N2O emissions could differ substantially from this v ...

31. Evaluation of AnnAGNPS on Mississippi Delta MSEA watersheds

Author:
Yuan, Y.; Bingner, R.L.; Rebich, R.A.
Source:
Transactions of the ASAE 2001 v.44 no.5 pp. 1183-1190
ISSN:
0001-2351
Subject:
watersheds; crop production; crop management; cover crops; winter; pollution control; water pollution; erosion control; water erosion; sediment yield; simulation models; agricultural land; losses from soil; runoff; prediction; best management practices; nonpoint source pollution; Mississippi
Abstract:
... Sediment and its associated pollutants entering a water body can be very destructive to the health of that system. Best Management Practices (BMPs) can be used to reduce these pollutants, but understanding the most effective practices is very difficult. Watershed models are the most cost-effective tools to aid in the decision-making process of selecting the BMP that is most effective in reducing t ...
Handle:
10113/26652

32. Evaluation of the Phosphorus Index in Watersheds at the Regional Scale

Author:
A. S. Birr; D. J. Mulla
Source:
Journal of environmental quality 2001 v.30 no.6 pp. 2018-2025
ISSN:
1537-2537
Subject:
Agricultural Research Service; National Institute of Food and Agriculture; Natural Resources Conservation Service; agricultural land; agricultural management models; agricultural runoff; agricultural watersheds; basins; databases; education; eutrophication; freshwater; hydrologic models; lakes; losses from soil; monitoring; phosphorus; risk; streams; total phosphorus; water quality; Minnesota
Abstract:
... Agricultural losses of phosphorus (P) in runoff are a primary cause of eutrophication in many freshwater systems. A modified version of the P Index originally developed jointly by the USDA (Agricultural Research Service [ARS], Cooperative State Research, Education, and Extension Service [CSREES], and Natural Resources Conservation Service [NRCS]) was used to prioritize P loss vulnerability at the ...
DOI:
10.2134/jeq2001.2018

33. Farmland lease decisions in a life-cycle model

Author:
Boumtje, P.I.; Barry, P.J.; Ellinger, P.N.
Source:
Agricultural finance review 2001 v.61 no.2 pp. 167-179
ISSN:
0002-1466
Subject:
risk; farm leases; agricultural land; duration; farmers' attitudes; life cycle (organisms); decision making
DOI:
10.1108/00214810180001122

34. Forest patches in Imperata grassland and prospects for their preservation under agricultural intensification in Northeast Luzon, The Philippines

Author:
D. J. Snelder
Source:
Agroforestry systems 2001 v.52 no.3 pp. 207-217
ISSN:
0167-4366
Subject:
particles; chemical elements; organic matter; agroforestry; grazing; management systems; Imperata; trees; burning; ecological function; nutrients; grasslands; forest products; land use change; rural communities; agricultural land; soil; surfaces; woody plants; cash crops; income; forest types; Philippines
Abstract:
... Frequent burning and grazing and cultivation of cash crops increasingly threaten forest patches in hilly grassland in Northeast Luzon, yet their importance as a resource with multiple environmental functions and forest products persists. The aim of this study is to identify different types of forest patches, and their condition under present land-use intensification, and discuss prospects for thei ...
DOI:
10.1023/A:1011848822268

35. Forestry in Canada in 2020

Author:
Hardy, Y.
Source:
Forestry chronicle 2001 v.77 no.6 pp. 989-990
ISSN:
0015-7546
Subject:
planning; agricultural land; forest recreation; forest management; duration; population density; wood products; wilderness; biodiversity; urbanization; forest ecology; prediction; Canada
DOI:
10.5558/tfc77989-6

36. Habitat restoration and agricultural production under land retirement

Author:
Purkey, D.R.; Wallender, W.W.
Source:
Journal of irrigation and drainage engineering 2001 v.127 no.4 pp. 240-245
ISSN:
0733-9437
Subject:
simulation models; endangered species; land policy; agricultural land; groundwater; production economics; agriculture; drainage; land use; habitats; California
DOI:
10.1061/(ASCE)0733-9437(2001)127:4(240)

37. Habitat use and diet of skylarks Alauda arvensis wintering on lowland farmland in southern Britain

Author:
Donald, P.F.; Buckingham, D.L.; Moorcroft, D.; Muirhead, L.B.; Evans, A.D.; Kirby, W.B.
Source:
Journal of applied ecology 2001 v.38 no.3 pp. 536-547
ISSN:
0021-8901
Subject:
foods; diet; agricultural land; lowlands; wild birds; overwintering; stubble; seeds; England
DOI:
10.1046/j.1365-2664.2001.00618.x

38. Herbicide and Nutrient Transport from an Irrigation District into the South Saskatchewan River

Author:
A. J. Cessna; J. A. Elliott; L. Tollefson; W. Nicholaichuk
Source:
Journal of environmental quality 2001 v.30 no.5 pp. 1796-1807
ISSN:
1537-2537
Subject:
2,4-D; MCPA (herbicide); agricultural land; ammonia; automation; bromoxynil; clopyralid; dicamba; drainage channels; ethalfluralin; fertilizers; irrigation; irrigation water; mecoprop; nitrates; nutrient transport; nutrients; phosphorus; pollution load; river water; rivers; runoff; samplers; total phosphorus; trifluralin; water quality; wetlands
Abstract:
... Pesticides and nutrients can be transported from treated agricultural land in irrigation runoff and thus can affect the quality of receiving waters. A 3-yr study was carried out to assess possible detrimental effects on the downstream water quality of the South Saskatchewan River due to herbicide and plant nutrient inputs via drainage water from an irrigation district. Automated water samplers and ...
DOI:
10.2134/jeq2001.3051796x

39. Historic assessment of agricultural impacts on soil and soil organic carbon erosion in an ohio watershed

Author:
Yueli Hao; Rattan Lal; R. Caesar Izaurralde; Jerry C. Ritchie; Lloyd B. Owens; Daniel L. Hothem
Source:
Soil science 2001 v.166 no.2 pp. 116-126
ISSN:
0038-075X
Subject:
sediment yield; no-tillage; watersheds; carbon; radionuclides; fields; plowing; cesium; losses from soil; Universal Soil Loss Equation; Triticum aestivum; continuous cropping; Revised Universal Soil Loss Equation; Zea mays; Glycine max; soil organic matter; crop rotation; water erosion; Ohio
Abstract:
... Agricultural management affects soil and soil organic carbon (SOC) erosion. The effect was assessed for a watershed (0.79 ha, 10% slope steepness, 132 m slope length) at the North Appalachian Experimental Watershed research station near Coshocton, Ohio, from 1951 to 1998. The agricultural management included: (i) plow-till corn (Zea mays L.)-wheat (Triticum aestivum L.)-meadow-meadow rotation (CWM ...
DOI:
10.1097/00010694-200102000-00005

40. How many soil samples are necessary to obtain a reliable estimate of mean nitrate concentrations in an agricultural field?

Author:
Ilsemann, J.; Goeb, S.; Bachmann, J.
Source:
Zeitschrift für Pflanzenernährung und Bodenkunde 2001 v.164 no.5 pp. 585-590
ISSN:
1436-8730
Subject:
agricultural land; estimation; nitrates; groundwater; groundwater contamination; environmental protection; spatial variation; statistical analysis; sampling; laws and regulations; Germany

41. Identification and characterization of bacteria in a selenium-contaminated hypersaline evaporation pond

Author:
De Souza, M.P.; Amini, A.; Dojka, M.A.; Pickering, I.J.; Dawson, S.C.; Pace, N.R.; Terry, N.
Source:
Applied and environmental microbiology 2001 v.67 no.9 pp. 3785-3794
ISSN:
0099-2240
Subject:
selenomethionine; irrigation water; water quality; salinity; agricultural land; ribosomal DNA; ponds; bioremediation; volatilization; selenium; evaporation; nucleotide sequences; Halomonas; saline water; drainage water; bacteria
Abstract:
... Solar evaporation ponds are commonly used to reduce the volume of seleniferous agricultural drainage water in the San Joaquin Valley, Calif. These hypersaline ponds pose an environmental health hazard because they are heavily contaminated with selenium (Se), mainly in the form of selenate. Se in the ponds may be removed by microbial Se volatilization, a bioremediation process whereby toxic, bioava ...
DOI:
10.1128/AEM.67.9.3785-3794.2001
PubMed:
11525968
PubMed Central:
PMC93092

42. Identifying critical sources of phosphorus export from agricultural watersheds

Author:
Weld, J.L.; Sharpley, A.N.; Beegle, D.B.; Gburek, W.J.
Source:
Nutrient cycling in agroecosystems 2001 v.59 no.1 pp. 29-38
ISSN:
1385-1314
Subject:
water pollution; water quality; agricultural land; leaching; risk assessment; watersheds; soil fertility; eutrophication; phosphorus; land use; runoff; Pennsylvania
Abstract:
... Surface runoff accounts for much of the phosphorus (P) input to and accelerated eutrophication of the fresh waters. Several states have tried to establish general threshold soil P levels above which the enrichment of surface runoff P becomes unacceptable. However, little information is available on the relationship between soil and surface runoff P, particularly for the northeastern United States. ...
Handle:
10113/18735

43. Influence of Selected Inorganic Electron Acceptors on Organic Nitrogen Mineralization in Everglades Soils

Author:
J.R. White; K.R. Reddy
Source:
Soil Science Society of America journal 2001 v.65 no.3 pp. 941-948
ISSN:
0361-5995
Subject:
agricultural land; agricultural runoff; bioavailability; biogeochemical cycles; detritus; ecosystems; eutrophication; methanogens; microbial biomass; mineralization; nitrates; organic nitrogen; pollution load; soil properties; sulfates; summer; surface water; total phosphorus; wetland soils; wetlands; Florida
Abstract:
... Organic N mineralization can regulate the bioavailability of N in wetland soils and be controlled by the availability of inorganic electron acceptors. During the past 40 yr, the northern Everglades has been affected by nutrient loading as a consequence of the diversion of surface water runoff from agricultural lands. The greatest hydraulic loading occurs in the summer season when precipitation is ...
DOI:
10.2136/sssaj2001.653941x

44. Integrating Urbanization into Landscape-level Ecological Assessments

Author:
Jeffrey D. Kline; Alissa Moses; Ralph J. Alig
Source:
Ecosystems 2001 v.4 no.1 pp. 3-18
ISSN:
1432-9840
Subject:
ecologists; land use change; socioeconomic factors; probability; roads; agricultural land; urbanization; economists; models; USDA Forest Service; geographic information systems; spatial data; forest inventory; environmental policy; population density; markets; forests; Oregon
Abstract:
... Economists and ecologists are often asked to collaborate on landscape-level analyses designed to jointly assess economic and ecological conditions resulting from environmental policy scenarios. This trend toward multidisciplinary projects, coupled with the growing use of geographic information systems, has led to the development of spatially explicit models that can be used to examine and project ...
DOI:
10.1007/s100210000056

45. Intercomparison of national & IPCC methods for estimating N loss from agricultural land

Author:
Silgram, M.; Waring, R.; Anthony, S.; Webb, J.
Source:
Nutrient cycling in agroecosystems 2001 v.60 no.1/3 pp. 189-195
ISSN:
1385-1314
Subject:
estimation; application timing; application rate; animal manures; agricultural land; nitrogen; fertilizers; fallow; leaching; Phaseolus vulgaris; methodology; pollution; seasonal variation; Pisum sativum; agricultural policy; nitrates; nitrous oxide; England; Wales
Abstract:
... The Intergovernmental Panel on Climate Change (IPCC) estimate indirect N2O emissions from agriculture as 2.5% of nitrate leached, which is itself estimated as a proportion of manure/fertiliser inputs. However, this assumes leaching losses are linearly related to N inputs, over-simplifying a complex N loss function which depends on the interactions between over-winter rainfall, soil type, cropping, ...

46. The Joint Influence of Agricultural and Nonfarm Factors on Real Estate Values: An Application to the Mid‐Atlantic Region

Author:
Ian W. Hardie; Tulika A. Narayan; Bruce L. Gardner
Source:
American journal of agricultural economics 2001 v.83 no.1 pp. 120-132
ISSN:
0002-9092
Subject:
agricultural land; farmland values; farms; income; land use; population density; residential housing; Mid-Atlantic region
Abstract:
... County level farmland and residential housing values are estimated for the Mid‐Atlantic region as a function of farm returns, developed land values, household incomes, population densities, and location. Results are based on the hypothesis that farmland owners anticipate land development and that nonfarm factors are important determinants of farmland prices. Response of farmland prices to change i ...
DOI:
10.1111/0002-9092.00141

47. Land cover mapping in an agricultural setting using multiseasonal Thematic Mapper data

Author:
Oetter, Doug R.; Cohen, Warren B.; Berterretche, Mercedes; Maiersperger, Thomas K.; Kennedy, Robert E.
Source:
Remote sensing of environment 2001 v.76 no.2 pp. 139-155
Subject:
agricultural land; forests; land use; vegetation cover; Landsat; remote sensing; thematic maps; image analysis; radiometry; Oregon
Abstract:
... A multiseasonal Landsat Thematic Mapper (TM) data set consisting of five image dates from a single year was used to characterize agricultural and related land cover in the Willamette River Basin (WRB) of western Oregon. Image registration was accomplished using an automated ground control point selection program. Radiometric normalization was performed using a semiautomated approach based on the i ...
Handle:
10113/37417
DOI:
10.1016/S0034-4257(00)00202-9

48. Land-use impact on ecosystem functioning in eastern Colorado, USA

Author:
Paruelo, J.M.; Burke, I.C.; Lauenroth, W.K.
Source:
Global change biology 2001 v.7 no.6 pp. 631-639
ISSN:
1354-1013
Subject:
environmental impact; solar radiation; canopy; plant communities; agricultural land; botanical composition; air temperature; seasonal variation; rain; soil texture; ecosystems; land use; grasslands; Colorado
DOI:
10.1046/j.1365-2486.2001.00387.x

49. Least-cost management of nonpoint source pollution: source reduction versus interception strategies for controlling nitrogen loss in the Mississippi Basin

Author:
Ribaudo, Marc O.; Heimlich, Ralph; Claassen, Roger; Peters, Mark
Source:
Ecological economics 2001 v.37 no.2 pp. 183-197
Subject:
wetlands; water pollution; pollution control; nitrogen; fertilizer rates; agricultural land; agricultural runoff; wetland conservation; nonpoint source pollution; cost benefit analysis; cost effectiveness; pollution load; nitrogen fertilizers; agricultural watersheds; Mississippi River
Abstract:
... Nutrient pollution is one of the major sources of water quality impairments in the U.S. Agriculture is a major source of nutrients. Two alternative strategies for reducing nutrient loads from cropland are to reduce fertilizer application rates and to filter nutrients coming off cropland with restored wetlands. These two approaches are evaluated in the Mississippi Basin, where nutrient loadings to ...
Handle:
10113/42663
DOI:
10.1016/S0921-8009(00)00273-1

50. Major Herbicides in Ground Water

Author:
Jack E. Barbash; Gail P. Thelin; Dana W. Kolpin; Robert J. Gilliom
Source:
Journal of environmental quality 2001 v.30 no.3 pp. 831-845
ISSN:
1537-2537
Subject:
acetochlor; agricultural land; alachlor; atrazine; basins; cyanazine; drinking water; groundwater; metolachlor; multivariate analysis; prometon; simazine; soil; urban areas; water quality; wells; United States
Abstract:
... To improve understanding of the factors affecting pesticide occurrence in ground water, patterns of detection were examined for selected herbicides, based primarily on results from the National Water-Quality Assessment (NAWQA) program. The NAWQA data were derived from 2227 sites (wells and springs) sampled in 20 major hydrologic basins across the USA from 1993 to 1995. Results are presented for si ...
DOI:
10.2134/jeq2001.303831x