Jump to Main Content
PubAg
Main content area
Search
« Previous |
1 - 20 of 41
|
Next »
Search Results
- Author:
- Nanni, Ana Sofía; Grau, Héctor Ricardo
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- abandoned land; agricultural mechanization; biodiversity; biodiversity conservation; birds; carbon; carbon sinks; ecosystem services; ecosystems; food production; forests; land cover; land use; landscape management; lowlands; mammals; sediments; soil; soil erosion; subtropics; watersheds; Argentina; Latin America
- Abstract:
- ... Areas of land abandonment and agriculture expansion usually differ in location and associated environmental characteristics; thus, land-use redistribution affects the provision of ecosystem services and biodiversity conservation. In a subtropical region undergoing land redistribution patterns characteristic of Latin America, we estimated 20-year changes in food production, above-ground carbon stoc ...
- DOI:
- 10.3390/f8080303
-
http://dx.doi.org/10.3390/f8080303
- Author:
- Guerra-Hernández, Juan; González-Ferreiro, Eduardo; Monleón, Vicente J.; Faias, Sonia P.; Tomé, Margarida; Díaz-Varela, Ramón A.
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Pinus pinea; biomass; canopy; canopy height; data collection; fertigation; forest management; image analysis; models; t-test; tree growth; tree height; trees; unmanned aerial vehicles
- Abstract:
- ... High spatial resolution imagery provided by unmanned aerial vehicles (UAVs) can yield accurate and efficient estimation of tree dimensions and canopy structural variables at the local scale. We flew a low-cost, lightweight UAV over an experimental Pinus pinea L. plantation (290 trees distributed over 16 ha with different fertirrigation treatments) to determine the tree positions and to estimate in ...
- DOI:
- 10.3390/f8080300
-
http://dx.doi.org/10.3390/f8080300
- Author:
- Kharuk, Viacheslav I.; Im, Sergei T.; Ranson, Kenneth J.; Yagunov, Mikhail N.
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Abies sibirica; Dendrolimus sibiricus; Picea obovata; Pinus sibirica; Polygraphus; altitude; bark; climatic factors; conifers; drought; forests; global warming; latitude; mortality; pests; temperature; topographic slope; Siberia
- Abstract:
- ... Siberian silkmoth (Dendrolimus sibiricus Tschetv.) is a dangerous pest that has affected nearly 2.5 × 106 ha of “dark taiga” stands (composed of Abies sibirica, Pinus sibirica and Picea obovata) within the latitude range of 52°–59° N. Here we describe a current silkmoth outbreak that is occurring about half degree northward of its formerly documented outbreak range. This outbreak has covered an ar ...
- DOI:
- 10.3390/f8080301
-
http://dx.doi.org/10.3390/f8080301
- Author:
- Jang, Woongsoon; Page-Dumroese, Deborah S.; Han, Han-Sup
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- air; burning; calcium; carbon; fire damage; fuels (fire ecology); heat transfer; magnesium; nitrogen content; organic matter; potassium; slash; soil chemical properties; soil depth; soil heating; soil sampling; soil temperature; California
- Abstract:
- ... We measured soil heating and subsequent changes in soil properties between two forest residue disposal methods: slash pile burning (SPB) and air curtain burner (ACB). The ACB consumes fuels more efficiently and safely via blowing air into a burning container. Five burning trials with different fuel sizes were implemented in northern California, USA. Soil temperature was measured at 1, 2, 3, 4, 6, ...
- DOI:
- 10.3390/f8080297
-
http://dx.doi.org/10.3390/f8080297
- Author:
- Berendt, Ferréol; Fortin, Mathieu; Jaeger, Dirk; Schweier, Janine
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- broadleaved trees; case studies; climate change; climatic factors; felling; forestry development; geographic information systems; harvesting; man-made trails; mechanization; mixed forests; roads; silviculture; skidders; soil; topography; tractors
- Abstract:
- ... In order to accommodate foreseen climate change in European forests, the following are recommended: (i) to increase the number of tree species and the structural diversity; (ii) to replace unsuitable species by native broadleaved tree species, and (iii) to apply close-to-nature silviculture. The state forest department of Baden-Württemberg (BW) currently follows the concept of Forest Development T ...
- DOI:
- 10.3390/f8080298
-
http://dx.doi.org/10.3390/f8080298
- Author:
- McElligott, Kristin M.; Seiler, John R.; Strahm, Brian D.
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Pinus taeda; carbon sinks; climate change; collars; drying; environmental factors; field capacity; forest ecosystems; forest litter; forest soils; forests; leaves; models; net ecosystem production; nutrient management; prediction; roots; soil carbon; soil respiration; soil water content; temporal variation; uncertainty; water content
- Abstract:
- ... Heterotrophic respiration (RH) is a major flux of CO2 from forest ecosystems and represents a large source of uncertainty in estimating net ecosystem productivity (NEP) using regional soil respiration (RS) models. RH from leaf litter (RHL) may contribute greatly to annual RH estimates, but its contribution may be misrepresented due ...
- DOI:
- 10.3390/f8080299
-
http://dx.doi.org/10.3390/f8080299
- Author:
- Lee, Eunjai; Han, Han-Sup
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- air; air flow; air pollution; air quality; burners; burning; fire spread; forests; fuels (fire ecology); plant residues; risk; weather
- Abstract:
- ... Open pile burning (OPB) forest residues have been limited due to several concerns, including atmospheric pollution, risk of fire spread, and weather conditions restrictions. Air Curtain Burner (ACB) systems could be an alternative to OPB and can avoid some of the negative effects that may result from OPB. The main objective was to compare the burning consumption rates and costs of two types of ACB ...
- DOI:
- 10.3390/f8080296
-
http://dx.doi.org/10.3390/f8080296
- Author:
- Zhou, Wei; Gong, Peichen; Gao, Lan
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- carbon; climate change; environmental policy; forestry development; forests; households; markets; supply balance; uncertainty; China
- Abstract:
- ... This paper provides an overview of China’s climate mitigation policy related to the forestry sector, with a special focus on the development of carbon forests which are established to mitigate climate change. A total of 3.5 million ha of carbon forest were planted in the past decade. In recent years, the number of Voluntary Emission Reduction forest carbon projects has increased rapidly. The main ...
- DOI:
- 10.3390/f8080295
-
http://dx.doi.org/10.3390/f8080295
- Author:
- Lione, Guglielmo; Gonthier, Paolo; Garbelotto, Matteo
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Laurus nobilis; Monte Carlo method; Phytophthora ramorum; algorithms; data collection; dry environmental conditions; forest ecosystems; invasive species; models; plant pathogens; probability; temperature; topography; trees; North America
- Abstract:
- ... Phytophthora ramorum is an alien and invasive plant pathogen threatening forest ecosystems in Western North America, where it can cause both lethal and non-lethal diseases. While the mechanisms underlying the establishment and spread of P. ramorum have been elucidated, this is the first attempt to investigate the environmental factors driving the recovery of bay laurel, the main transmissive host ...
- DOI:
- 10.3390/f8080293
-
http://dx.doi.org/10.3390/f8080293
- Author:
- Pacheco-Angulo, Carlos; Vilanova, Emilio; Aguado, Inmaculada; Monjardin, Sergio; Martinez, Susana
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Landsat; United Nations Framework Convention on Climate Change; aboveground biomass; carbon; case studies; deforestation; ecoregions; emissions; emissions factor; forest damage; forest reserves; forestry; forests; guidelines; land use change; Venezuela
- Abstract:
- ... This study presents for the first time in Venezuela a joint analysis of deforestation and forest degradation processes, including its effects on carbon emissions. The Caparo Forest Reserve, located in the Western Plains ecoregion, in one of the national hot spots of deforestation, served as a case study using three different periods: 1990–2000, 2000–2010 and 2010–2015. In the context of the United ...
- DOI:
- 10.3390/f8080291
-
http://dx.doi.org/10.3390/f8080291
- Author:
- Kim, Seongjun; Li, Guanlin; Han, Seung Hyun; Chang, Hanna; Kim, Hyun-Jun; Son, Yowhan
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Pinus densiflora; carbon; coarse woody debris; forest soils; forests; microbial biomass; mineral soils; nitrogen; pH; soil properties; spatial variation
- Abstract:
- ... Although coarse woody debris (CWD) is important for soil functioning, the mechanism which affects soil properties beneath CWD are unclear. Here, initial changes in microbial and soil properties were studied using homogenous CWD samples in eight Korean red pine (Pinus densiflora Sieb. et Zucc.) forests. For each forest, CWD samples (diameter: 11.1 ± 0.1 cm; length: 10.2 ± 0.0 cm) from similarly age ...
- DOI:
- 10.3390/f8080292
-
http://dx.doi.org/10.3390/f8080292
- Author:
- García-Montiel, Emily; Cubbage, Frederick; Rojo-Alboreca, Alberto; Lujan-Álvarez, Concepción; Montiel-Antuna, Eusebio; Corral-Rivas, José Javier
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- business enterprises; community forestry; forest certification; forests; market access; markets; silvicultural practices; sustainable forestry; Mexico
- Abstract:
- ... Mexico has had a non-state forest certification system under the Forest Stewardship Council (FSC) since it was initiated in 1993, and developed a new state-sponsored Mexican Forest Certification System (MFCS) that began in 2008. Several analyses have been made of FSC forest certification in Mexico, but none have summarized the new MFCS system or compared its standards with FSC. We compare the impl ...
- DOI:
- 10.3390/f8080290
-
http://dx.doi.org/10.3390/f8080290
- Author:
- Sedmáková, Denisa; Saniga, Milan; Kucbel, Stanislav; Pittner, Ján; Kýpeťová, Mariana; Jaloviar, Peter; Bugala, Michal; Vencurik, Jaroslav; Lukáčik, Ivan
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Taxus baccata; biodiversity; browsing; canopy; case studies; climate; climate change; data collection; deer; females; forest decline; forests; growth rings; males; mountains; reproduction; shelterwood systems; stem elongation; summer; uncertainty; understory; viability; winter; yews; Central European region; Slovakia
- Abstract:
- ... The increasing probability of Taxus baccata (L.) decline given climate change brings forth many uncertainties for conservation management decisions. In this article, the authors present the effects of applying regeneration cuttings since the year 2000 on the viability of the understory yew population. By collecting data from a stand located at the centre of the largest population of European yew i ...
- DOI:
- 10.3390/f8080289
-
http://dx.doi.org/10.3390/f8080289
- Author:
- Humagain, Kamal; Portillo-Quintero, Carlos; Cox, Robert D.; Cain, James W.
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Abies; Landsat; Picea; Pinus ponderosa; biodiversity; forests; habitats; landscapes; models; mountains; pinyon-juniper; planning; reflectance; remote sensing; stand density; topography; trees; understory; vegetation index; wildlife; New Mexico
- Abstract:
- ... The increase of tree density in forests of the American Southwest promotes extreme fire events, understory biodiversity losses, and degraded habitat conditions for many wildlife species. To ameliorate these changes, managers and scientists have begun planning treatments aimed at reducing fuels and increasing understory biodiversity. However, spatial variability in tree density across the landscape ...
- DOI:
- 10.3390/f8080287
-
http://dx.doi.org/10.3390/f8080287
- Author:
- Ni, Xiliang; Cao, Chunxiang; Zhou, Yuke; Ding, Lin; Choi, Sungho; Shi, Yuli; Park, Taejin; Fu, Xiao; Hu, Hong; Wang, Xuejun
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- aboveground biomass; allometry; forest trees; forests; image analysis; lidar; meteorological data; moderate resolution imaging spectroradiometer; monitoring; neural networks; remote sensing; satellites; tree height; China
- Abstract:
- ... This study develops a modeling framework for utilizing the large footprint LiDAR waveform data from the Geoscience Laser Altimeter System (GLAS) onboard NASA’s Ice, Cloud, and Land Elevation Satellite (ICESat), Moderate Resolution Imaging Spectro-Radiometer (MODIS) imagery, meteorological data, and forest measurements for monitoring stocks of total biomass (including aboveground biomass and root b ...
- DOI:
- 10.3390/f8080288
-
http://dx.doi.org/10.3390/f8080288
- Author:
- Feng, Jing; Shen, Yongbao; Shi, Fenghou; Li, Chengzhong
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Ginkgo biloba; antioxidant enzymes; drying; electrical conductivity; enzyme activity; lipid peroxidation; malondialdehyde; peroxidase; relative humidity; seed germination; seed moisture; seeds; superoxide dismutase; water content
- Abstract:
- ... With the aim of investigating the antioxidant system and germinability in response to the desiccation of Ginkgo biloba seeds, they were put in a drying room (25 ± 2% relative humidity, 25 °C) for 67 days. Results showed that the germination rate remained constant when seed moisture content (MC) decreased from 48% (fresh seeds) to 45.1%. However, when MC reached 40.1%, the germination percentage de ...
- DOI:
- 10.3390/f8080286
-
http://dx.doi.org/10.3390/f8080286
- Author:
- Jiang, Peipei; Chen, Yunming; Cao, Yang
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Quercus variabilis; branches; carbon; carbon sequestration; forest ecosystems; herbs; leaves; mountains; nitrogen; phosphorus; phytomass; roots; secondary forests; shrubs; soil; stand age; stoichiometry; tissues; trees; China
- Abstract:
- ... Large-scale Quercus variabilis natural secondary forests are protected under the Natural Forest Protection (NFP) program in China to improve the ecological environment. However, information about nutrient characteristics and carbon (C) storage is still lacking. Plant biomass and C, nitrogen (N) and phosphorus (P) stoichiometry of tree tissues, shrubs, herbs, litter, and soil were determined in you ...
- DOI:
- 10.3390/f8080281
-
http://dx.doi.org/10.3390/f8080281
- Author:
- Dunckel, Kathleen; Weiskittel, Aaron; Fiske, Greg
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Tsuga canadensis; algorithms; climate; climate change; forest ecosystems; forests; geographic information systems; geographical distribution; habitats; managers; models; prediction; trees; Maine
- Abstract:
- ... Climate change is having an impact on forest ecosystems around the world and is expected to alter the suitable habitat of individual tree species. Forest managers require resources about potential impacts of climate change at the regional scale to aid in climate mitigation efforts. By understanding the geographic distribution of changes in suitable habitat, migration corridors can be identified fo ...
- DOI:
- 10.3390/f8080285
-
http://dx.doi.org/10.3390/f8080285
- Author:
- Hart, Justin L.; Cox, Lauren E.
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Quercus; canopy; decision making; developmental stages; models; stand development
- Abstract:
- ... We propose a conceptual framework for the development of closed canopy oak (Quercus) stands that incorporates the influence of intermediate-severity canopy disturbance events, provides for the possibility of multiple developmental pathways, and does not narrowly define an endpoint given the stochastic nature of natural disturbances. The proposed model differs from the current oak stand development ...
- DOI:
- 10.3390/f8080284
-
http://dx.doi.org/10.3390/f8080284
- Author:
- Wang, Chaoying; Xie, Yingzan; He, Yanyan; Li, Xiaoxue; Yang, Wenhang; Li, Changxiao
- Source:
- Forests 2017 v.8 no.8
- ISSN:
- 1999-4907
- Subject:
- Salix matsudana; dams (hydrology); ecological restoration; flooding tolerance; hydrologic cycle; photosynthesis; riparian vegetation; saplings; stomata; submergence; tree and stand measurements; tree height; water reservoirs; water use efficiency; China
- Abstract:
- ... Submergence-tolerant trees are essential for vegetation restoration of the hydro-fluctuation zone of the Three Gorges Dam Reservoir (TGDR) area. Thus, it is of great significance to select the submergence-tolerant plant species by conducting in situ studies. To restore degraded riparian vegetation under the circumstances of dynamic impoundment of the TGDR, Salix matsudana Koidz., a flooding-tolera ...
- DOI:
- 10.3390/f8080283
-
http://dx.doi.org/10.3390/f8080283