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Agricultural and forest meteorology
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7987-2013
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2013 v.168
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- Author:
- Gregory King; Patrick Fonti; Daniel Nievergelt; Ulf Büntgen; David Frank
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 36-46
- ISSN:
- 0168-1923
- Subject:
- Picea; air temperature; climatic factors; conifers; forests; growing season; hydrologic cycle; relative humidity; stems; temperature profiles; tree and stand measurements; tree growth; trees; water uptake
- Abstract:
- ... Climate affects the timing, rate and dynamics of tree growth, over time scales ranging from seconds to centuries. Monitoring how a tree's stem radius varies over these time scales can provide insight into intra-annual stem dynamics and improve our understanding of climate impacts on tree physiology and growth processes. Here, we quantify the response of radial conifer stem size to environmental fl ...
- DOI:
- 10.1016/j.agrformet.2012.08.002
- https://doi.org/10.1016/j.agrformet.2012.08.002
- Author:
- Risheng Ding; Shaozhong Kang; Fusheng Li; Yanqun Zhang; Ling Tong
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 140-148
- ISSN:
- 0168-1923
- Subject:
- arid zones; corn; diurnal variation; eddy covariance; evapotranspiration; growing season; irrigation scheduling; leaf area index; models; mulching; plastic film mulches; soil water; solar radiation; water resources
- Abstract:
- ... Accurate measurement or estimation of crop evapotranspiration (ET) is important to develop exact irrigation scheduling and reasonably use water resources. ET of an irrigated maize field mulched with plastic film was measured using eddy covariance technique over two growing seasons in an arid region of northwest China. A modified Priestley–Taylor (PT) model was developed, incorporating the effect o ...
- DOI:
- 10.1016/j.agrformet.2012.08.003
- https://doi.org/10.1016/j.agrformet.2012.08.003
- Author:
- Dimitrios Sarris; Rolf Siegwolf; Christian Körner
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 59-68
- ISSN:
- 0168-1923
- Subject:
- Pinus halepensis; autumn; carbon; carbon sinks; deuterium oxide; drought; growth rings; isotopes; leaves; mortality; oxygen; rain; starvation; summer; surface water; temperature; tree growth; tree mortality; trees; wood
- Abstract:
- ... Interpreting the isotopic tree-ring responses of pines to drought provides insight into the causes of tree mortality. For this reason, we examine such responses for low elevation Pinus halepensis subsp. brutia trees that neighbor recently desiccated pine stands. A strong correlation between 13C discrimination (Δ) signals recorded in tree-rings and concurrent drought indicates a rapid transfer of n ...
- DOI:
- 10.1016/j.agrformet.2012.08.007
- https://doi.org/10.1016/j.agrformet.2012.08.007
- Author:
- Clemens Wastl; Christian Schunk; Marvin Lüpke; Giampaolo Cocca; Marco Conedera; Eva Valese; Annette Menzel
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 15-25
- ISSN:
- 0168-1923
- Subject:
- burning; climate; databases; drought; fire hazard; fire regime; fire weather; forest fires; forest soils; forest types; fuels; humans; montane forests; relative humidity; seasonal variation; summer; topography; wind; Alps region; Austria; France; Germany; Italy; Switzerland
- Abstract:
- ... In the Alps forest fires have burnt around 14,500ha per year in the past decade. In this paper we studied large-scale (synoptic) weather patterns and the corresponding occurrence of forest fires in this complex topography. The database for our analysis comprised three main parts: a daily classification of weather types in the period 1951–2010, daily calculated forest fire danger indices at five se ...
- DOI:
- 10.1016/j.agrformet.2012.08.011
- https://doi.org/10.1016/j.agrformet.2012.08.011
- Author:
- Byoung-Hoon Lee; Phil Kenkel; B. Wade Brorsen
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 26-35
- ISSN:
- 0168-1923
- Subject:
- biological development; developmental stages; grain yield; meteorological data; models; prediction; proteins; regression analysis; temperature; weather forecasting
- Abstract:
- ... County wheat yield and wheat quality are forecast using weather information. Regression models are estimated to account for the effect of weather on county wheat yield, protein, and test weight. The explanatory variables include precipitation and temperature for growing periods that correspond to biological wheat development stages. Wheat yield, protein, and test weight are strongly influenced by ...
- DOI:
- 10.1016/j.agrformet.2012.08.010
- https://doi.org/10.1016/j.agrformet.2012.08.010
- Author:
- Hanqiu Xu; Tiejun Zhang
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 1-9
- ISSN:
- 0168-1923
- Subject:
- Advanced Spaceborne Thermal Emission and Reflection Radiometer; Landsat; climate; coasts; ecosystems; energy balance; equations; forests; grasses; image analysis; paddies; China
- Abstract:
- ... Vegetation is one of the most important components of the global ecosystem. It plays a vital role for global energy balances and climate modulations. Timely and precisely monitoring vegetation changes has become an increasing need. Among various satellite-based earth observation systems, the Landsat and ASTER sensors are most commonly used in mesoscale vegetation observations. Nevertheless, the qu ...
- DOI:
- 10.1016/j.agrformet.2012.08.012
- https://doi.org/10.1016/j.agrformet.2012.08.012
- Author:
- Tiphaine Tallec; Pierre Béziat; Nathalie Jarosz; Vincent Rivalland; Eric Ceschia
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 69-81
- ISSN:
- 0168-1923
- Subject:
- C4 photosynthesis; Helianthus annuus; agricultural resources; agroecosystems; air temperature; biomass; carbon; climate change; corn; corn silage; crops; early development; ecosystem respiration; eddy covariance; evaporation; evapotranspiration; farmers; growing season; irrigation; net ecosystem exchange; phenology; profits and margins; rain; seasonal variation; summer; temperate zones; transpiration; vapor pressure; water use efficiency; winter wheat; France
- Abstract:
- ... In the context of climate change and agricultural water resource limitations, the ability to identify drivers for improving agro-ecosystem water use efficiency (WUE) is essential. The principal aim of this study was to analyze and compare the WUE (g C per kg H2O) calculated from ecophysiological (WUEplt for plants at the stand level), environmental (WUEeco and WUENBP for the ecosystem) and agronom ...
- DOI:
- 10.1016/j.agrformet.2012.07.008
- https://doi.org/10.1016/j.agrformet.2012.07.008
- Author:
- Raimund Henneken; Volker Dose; Christoph Schleip; Annette Menzel
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 177-185
- ISSN:
- 0168-1923
- Subject:
- Bayesian theory; Fagus sylvatica; Populus tremula; altitude; autumn; buds; cameras; color; growing season; image analysis; leaf development; leaves; logit analysis; model uncertainty; national forests; national parks; phenology; photography; seasonal variation; spring; trees; wavelengths; weather
- Abstract:
- ... Phenological observations have a long tradition. By contrast, digital webcam-based phenological research has only developed in recent years, prompted by the development of cheaper user-friendly digital camera systems and by higher staff costs. Webcam photography provides spectral information in red, green and blue (RGB) wavelengths which mirror the seasonal colour changes in trees during bud burst ...
- DOI:
- 10.1016/j.agrformet.2012.09.001
- https://doi.org/10.1016/j.agrformet.2012.09.001
- Author:
- Francesco Chianucci; Andrea Cutini
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 130-139
- ISSN:
- 0168-1923
- Subject:
- Castanea sativa; Fagus sylvatica; Quercus cerris; deciduous forests; forest canopy; forest ecosystems; forest stands; leaf angle; leaf area index; leaves; monitoring; photography; porosity; transmittance; Italy
- Abstract:
- ... Rapid, reliable and meaningful estimates of forest canopy are essential to the characterization of forest ecosystems. In this paper the accuracy of digital hemispherical (DHP) and cover (DCP) photography for the estimation of canopy properties in deciduous forests was evaluated. Leaf area index (LAI) estimated from both these photographic methods and from light transmittance data derived from DHP ...
- DOI:
- 10.1016/j.agrformet.2012.09.002
- https://doi.org/10.1016/j.agrformet.2012.09.002
- Author:
- A. Holzkämper; P. Calanca; J. Fuhrer
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 149-159
- ISSN:
- 0168-1923
- Subject:
- planning; drought; plateaus; phenology; heat stress; water stress; grain yield; climate; temporal variation; Zea mays; plant development; managers; corn; climate change; pests; biomass production; temperature; frost; crop quality; crops; Switzerland
- Abstract:
- ... Climate plays a fundamental role in agriculture. The quantity and quality of crop yield can be affected by water stress, heat stress or frost or by pests and diseases. As climate conditions change, suitability zones for the cultivation of specific crops may shift. For planners and land managers it is important to understand such changes in order to develop short- and long-term adaptation strategie ...
- DOI:
- 10.1016/j.agrformet.2012.09.004
- https://doi.org/10.1016/j.agrformet.2012.09.004
11. Impact of vegetation fraction from Indian geostationary satellite on short-range weather forecast
- Author:
- Prashant Kumar; Bimal K. Bhattacharya; P.K. Pal
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 82-92
- ISSN:
- 0168-1923
- Subject:
- heat transfer; managers; models; prediction; rain; remote sensing; satellites; temperature; trade; vegetation; weather forecasting; India
- Abstract:
- ... Indian economy is largely depending upon the agricultural productivity and thus influences the trade among the SAARC countries. High-resolution and good-quality regional weather forecasts are necessary for planners, resource managers, insurers and national agro-advisory services. In this study, high resolution updated land-surface state in terms of vegetation fraction (VF) from operational vegetat ...
- DOI:
- 10.1016/j.agrformet.2012.08.009
- https://doi.org/10.1016/j.agrformet.2012.08.009
- Author:
- Narasinha J. Shurpali; Christina Biasi; Simo Jokinen; Niina Hyvönen; Pertti J. Martikainen
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 47-58
- ISSN:
- 0168-1923
- Subject:
- eddy covariance; equipment; energy crops; carbon; vapor pressure; land use; water vapor; linear models; peatlands; vegetation; organic soils; energy balance; ecosystems; belowground biomass; solar radiation; process energy; air temperature; soil quality; climate change; soil water; evapotranspiration; water use efficiency; spring; growing season; heat transfer; energy transfer; Phalaris arundinacea; Finland
- Abstract:
- ... With the aim of addressing the broader issues of land use, climate change and energy crisis, eddy covariance measurements of energy and CO2 exchange from a bioenergy crop (reed canary grass, Phalaris arundinaceae, L.) cultivated on a drained organic soil (a cutover peatland) in eastern Finland were initiated in the spring of 2004. Based on the climatically diverse dataset from the 2004 to 2010 per ...
- DOI:
- 10.1016/j.agrformet.2012.08.006
- https://doi.org/10.1016/j.agrformet.2012.08.006
- Author:
- Brian R. Sturtevant; Gary L. Achtemeier; Joseph J. Charney; Dean P. Anderson; Barry J. Cooke; Philip A. Townsend
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 186-200
- ISSN:
- 0168-1923
- Subject:
- Choristoneura fumiferana; adults; air; air temperature; dispersal behavior; flight; forest insects; hosts; landscapes; models; moths; population dynamics; temperature profiles; trees; uncertainty; wind direction; wind speed; Lake Superior; Minnesota; New Brunswick; Ontario
- Abstract:
- ... Dispersal can play an important role in the population dynamics of forest insects, but the role of long-distance immigration and emigration remains unclear due to the difficulty of quantifying dispersal distance and direction. We designed an agent-based spruce budworm flight behavior model that, when interfaced with temperature, wind speed, and precipitation output from a high-resolution atmospher ...
- DOI:
- 10.1016/j.agrformet.2012.09.008
- https://doi.org/10.1016/j.agrformet.2012.09.008
- Author:
- David McJannet; Freeman Cook; Ryan McGloin; Hamish McGowan; Stewart Burn; Brad Sherman
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 93-107
- ISSN:
- 0168-1923
- Subject:
- energy balance; equations; heat transfer; irrigation water; prediction; process control; seasonal variation; summer; surface water; water temperature; winter; Queensland
- Abstract:
- ... An analysis is presented of the long-term energy balance of a small water body in south-east Queensland, Australia. The main focus of this study was on the use of scintillometry to determine the turbulent fluxes of sensible and latent heat. A novel approach is utilized for identifying periods where the scintillometry measurement footprint extends beyond the water surface. This approach relies on c ...
- DOI:
- 10.1016/j.agrformet.2012.08.013
- https://doi.org/10.1016/j.agrformet.2012.08.013
- Author:
- Ken James; Craig Hallam; Chris Spencer
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 160-167
- ISSN:
- 0168-1923
- Subject:
- field experimentation; nondestructive methods; rhizosphere; roots; static load; static testing; tree trunk; trees; wind
- Abstract:
- ... This paper describes a non-destructive method to measure the tilt angle (Φ) of a tree's structural root zone as it tilts under winds or static pulling. This method records both magnitude and direction of the dynamic tilt response of the tree root plate. A tri-axial accelerometer is used as a tilt sensor and is attached to the base of the tree trunk at ground level. Dynamic root plate tilt can be m ...
- DOI:
- 10.1016/j.agrformet.2012.09.009
- https://doi.org/10.1016/j.agrformet.2012.09.009
- Author:
- Remko A. Duursma; Paxton Payton; Michael P. Bange; Katrina J. Broughton; Renee A. Smith; Belinda E. Medlyn; David T. Tissue
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 168-176
- ISSN:
- 0168-1923
- Subject:
- cotton; cultivars; Gossypium hirsutum; water use efficiency; air temperature; models; transpiration; climate change; carbon; vapor pressure; photosynthesis; stomata; crops
- Abstract:
- ... The instantaneous transpiration efficiency (ITE, the ratio of photosynthesis rate to transpiration) is an important variable for crops, because it ultimately affects dry mass production per unit of plant water lost to the atmosphere. The theory that stomata optimize carbon uptake per unit water used predicts that ITE should be proportional to the atmospheric [CO2] (Ca), approximately inversely pro ...
- DOI:
- 10.1016/j.agrformet.2012.09.005
- https://doi.org/10.1016/j.agrformet.2012.09.005
- Author:
- David Granucci; Mark Rudnicki; April Hiscox; David Miller; Hong-Bing Su
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 10-14
- ISSN:
- 0168-1923
- Subject:
- temperature; freezing; freezing point; anemometers; canopy; snow; trees; wind speed; wind direction; branches; conifers; air flow; forests
- Abstract:
- ... Wind induced sway was measured for 18 conifers in an even aged, naturally regenerated evergreen forest in Howland, ME between August 23, 2009 and January 29, 2010. Tree sway was measured using biaxial clinometers and wind speed, wind direction and temperature were measured using sonic anemometers, with all measurements at 10Hz. This study quantifies changes in wind-loaded tree-sway frequencies for ...
- DOI:
- 10.1016/j.agrformet.2012.07.016
- https://doi.org/10.1016/j.agrformet.2012.07.016
- Author:
- C. Ballester; M.A. Jiménez-Bello; J.R. Castel; D.S. Intrigliolo
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 120-129
- ISSN:
- 0168-1923
- Subject:
- Citrus; atmospheric pressure; canopy; deficit irrigation; environmental factors; fruit trees; indicator species; irrigation rates; leaf conductance; leaves; persimmons; plant stress; stomatal movement; stress response; thermography; water potential; water stress
- Abstract:
- ... The feasibility of using canopy temperature (Tc) measured with a hand-operated infrared thermographic camera as a water stress indicator was evaluated in the field during two seasons on citrus and persimmon trees subjected to different levels of deficit irrigation. In both species, which differ in leaf anatomy and stomatal response to environmental conditions, Tc was compared with midday stem wate ...
- DOI:
- 10.1016/j.agrformet.2012.08.005
- https://doi.org/10.1016/j.agrformet.2012.08.005
- Author:
- María Susana Alvarado-Barrientos; Virginia Hernández-Santana; Heidi Asbjornsen
- Source:
- Agricultural and forest meteorology 2013 v.168 pp. 108-119
- ISSN:
- 0168-1923
- Subject:
- Pinus patula; deciduous forests; environmental factors; forest stands; heat treatment; probability distribution; sap; sap flow; sapwood; tree age; trees; vapor pressure; water uptake; Mexico
- Abstract:
- ... Characterizing the variability of the radial profiles of sap velocity (vs) is a critical step to improve upscaling point measurements of vs to whole-tree sap flow. One promising approach is the use of a probability distribution function (pdf) to model radial profiles of vs, because shape parameters could potentially be generalized to trees of the same species based on the premise that the shape re ...
- DOI:
- 10.1016/j.agrformet.2012.08.004
- https://doi.org/10.1016/j.agrformet.2012.08.004