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Journal name
Agricultural and forest meteorology
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Publication year rev
7981-2019
Remove constraint Publication year rev: 7981-2019
Subject term
dry season
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11 Search Results
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- Author:
- Timothy W. Hilton; Michael E. Loik; J. Elliott Campbell
- Source:
- Agricultural and forest meteorology 2019 v.266-267 pp. 173-183
- ISSN:
- 0168-1923
- Subject:
- carbon; carbon cycle; climate; climate change; drought; dry season; ecosystems; gross primary productivity; hosts; hydrologic cycle; leaf area index; models; phenology; prediction; protocols; soil water; topography; uncertainty; vegetation; wet season; California
- Abstract:
- ... Anthropogenic climate change will alter regional hydrologic cycles around the world, in part by increasing the frequency or duration of droughts in some areas. The International Drought Experiment (IDE) is investigating the impact of severe drought on terrestrial vegetation by experimentally reducing precipitation at dozens of sites. Here we implement the IDE precipitation reduction protocol using ...
- DOI:
- 10.1016/j.agrformet.2018.12.016
- https://doi.org/10.1016/j.agrformet.2018.12.016
- Author:
- Zheng-Hong Tan; Jun-Fu Zhao; Guan-Ze Wang; Meng-Ping Chen; Lian-Yan Yang; Chun-Sheng He; Natalia Restrepo-Coupe; Shu-Shi Peng; Xue-Yan Liu; Humberto R. da Rocha; Yoshiko Kosugi; Takashi Hirano; Scott R. Saleska; Michael L. Goulden; Jiye Zeng; Fang-Jun Ding; Fu Gao; Liang Song
- Source:
- Agricultural and forest meteorology 2019 v.275 pp. 317-328
- ISSN:
- 0168-1923
- Subject:
- aerodynamics; diurnal variation; dry season; eddy covariance; environmental factors; evaporation; evapotranspiration; models; momentum; seasonal variation; transpiration; tropical forests; turbulent flow; water vapor
- Abstract:
- ... Tropical forests are responsible for the evaporation and transpiration of large quantities of water into the atmosphere annually. Surface conductance (gs) is a poorly understood phenomenon that plays a central role in regulating this evapotranspiration. We studied the calculations, variations, and environmental factors controlling gs based on eddy flux measurements from 10 tropical forest sites th ...
- DOI:
- 10.1016/j.agrformet.2019.06.006
- https://doi.org/10.1016/j.agrformet.2019.06.006
- Author:
- Suany Campos; Keila R. Mendes; Lindenberg L. da Silva; Pedro R. Mutti; Salomão S. Medeiros; Laerte B. Amorim; Carlos A.C. dos Santos; Aldrin M. Perez-Marin; Tarsila M. Ramos; Thiago V. Marques; Paulo S. Lucio; Gabriel B. Costa; Cláudio M. Santos e Silva; Bergson G. Bezerra
- Source:
- Agricultural and forest meteorology 2019 v.271 pp. 398-412
- ISSN:
- 0168-1923
- Subject:
- arid lands; caatinga; dry season; ecosystems; eddy covariance; energy balance; friction velocity; latent heat flux; net radiation; seasonal variation; soil heat flux; temperature; turbulent flow; uncertainty; water vapor; wet season; wind speed; Brazil
- Abstract:
- ... The energy balance closure obtained through the eddy covariance method is a problem which persists, despite advances in the development and improvement of instruments and recent efforts in the description of corrections and in the characterization of measuring uncertainties. In most places the sum of sensible and latent heat fluxes (H and λE) is less than available energy, i.e. the difference betw ...
- DOI:
- 10.1016/j.agrformet.2019.03.018
- https://doi.org/10.1016/j.agrformet.2019.03.018
- Author:
- J. Tuure; A. Korpela; M. Hautala; M. Hakojärvi; H. Mikkola; M. Räsänen; J. Duplissy; P. Pellikka; T. Petäjä; M. Kulmala; L. Alakukku
- Source:
- Agricultural and forest meteorology 2019 v.276-277 pp. 107613
- ISSN:
- 0168-1923
- Subject:
- collectors; dew; dry season; field experimentation; foil; models; poly(vinyl chloride); polyethylene; surface temperature; Kenya
- Abstract:
- ... This study characterized different polyethylene (PE) and polyvinyl chloride (PVC) plastic foil materials effectiveness for dew collection in arid field-conditions in Kenya. Dew yields were collected daily for one year. Ten dew collectors with four different plastic foils were setup in the experimental field. The cumulated dew yields ranged from 18.9 to 25.3 mm. The greatest cumulated dew yields we ...
- DOI:
- 10.1016/j.agrformet.2019.06.012
- https://doi.org/10.1016/j.agrformet.2019.06.012
- Author:
- Geoffrey G. Parker; David R. Fitzjarrald; Irene Cibelle Gonçalves Sampaio
- Source:
- Agricultural and forest meteorology 2019 v.278 pp. 107661
- ISSN:
- 0168-1923
- Subject:
- absorption; algorithms; autocorrelation; canopy; canopy height; diurnal variation; dry season; forest litter; geometry; leaf area index; lidar; national forests; normalized difference vegetation index; photons; photosynthesis; photosynthetically active radiation; rain forests; remote sensing; seasonal variation; smoke; surface area; transmittance; tropical forests; understory; wet season; Brazil
- Abstract:
- ... We studied the interplay of atmospheric and canopy structure factors driving the canopy light environment (Photosynthetic Photon Flux Density, PPFD) in primary moist tropical forest in the Tapajós National Forest, Brazil. We quantified the temporal and spatial length scales that characterize intact rain forest inhomogeneities, asking: Are seasonal changes in the canopy radiation balance evident at ...
- DOI:
- 10.1016/j.agrformet.2019.107661
- https://doi.org/10.1016/j.agrformet.2019.107661
- Author:
- Peter Brugger; Frederik De Roo; Konstantin Kröniger; Eyal Rotenberg; Fedor Tatarinov; Dan Yakir; Matthias Zeeman; Matthias Mauder
- Source:
- Agricultural and forest meteorology 2019 v.269-270 pp. 19-27
- ISSN:
- 0168-1923
- Subject:
- Pinus; coniferous forests; diurnal variation; dry season; forest canopy; heat transfer; momentum; night temperature; radiative forcing; semiarid zones; sensible heat flux; shrublands; summer; surface temperature; turbulent flow; ultrasonics; wind
- Abstract:
- ... Efficiency and energetics of the turbulent transport in the canopy sublayer of a semi-arid pine forest and the atmospheric surface layer of a sparse desert-like shrubland are investigated from ultrasonic anemometer measurements during the summer dry season. The results show that an increased sensible heat flux over the forest canopy is generated by more energetic turbulence at small and large scal ...
- DOI:
- 10.1016/j.agrformet.2019.01.041
- https://doi.org/10.1016/j.agrformet.2019.01.041
- Author:
- Wenjuan Shen; Mingshi Li; Chengquan Huang; Tao He; Xin Tao; Anshi Wei
- Source:
- Agricultural and forest meteorology 2019 v.276-277 pp. 107641
- ISSN:
- 0168-1923
- Subject:
- afforestation; air temperature; cooling; cropland; dry season; evapotranspiration; forest plantations; global warming; grasslands; latitude; satellites; spatial variation; surface temperature; temporal variation; tropical forests; warm season; wet season; China
- Abstract:
- ... Estimating the effects of large scale afforestation is essential for the accurate understanding of its potential for the mitigation of climate warming. We used satellite observations to quantify the effects of the conversion of open lands (i.e., grassland and cropland) and natural forests to plantation forests and their associated biophysical processes (i.e., albedo and evapotranspiration (ET)) on ...
- DOI:
- 10.1016/j.agrformet.2019.107641
- https://doi.org/10.1016/j.agrformet.2019.107641
- Author:
- Junjun Wu; Meng Lu; Jiao Feng; Dandan Zhang; Qiong Chen; Qianxi Li; Chunyan Long; Quanfa Zhang; Xiaoli Cheng
- Source:
- Agricultural and forest meteorology 2019 v.271 pp. 307-315
- ISSN:
- 0168-1923
- Subject:
- Platycladus orientalis; coniferous forests; detritus; dry season; forest ecosystems; methane; methane production; methanotrophs; microclimate; phospholipid fatty acids; plant litter; roots; soil water; soil water content; wet season; China
- Abstract:
- ... The uptake of CH4 by well-drained soil plays a vital role in mitigating the atmospheric CH4, but the impacts of shift in plant litter input on uptake of CH4 and the underlying mechanism are not fully understood. Here, we conducted in situ measurements of soil CH4 flux rates monthly throughout the year after the short-term litter input manipulations (i.e. Detritus Input and Removal Treatment-DIRT: ...
- DOI:
- 10.1016/j.agrformet.2019.03.017
- https://doi.org/10.1016/j.agrformet.2019.03.017
- Author:
- Bijan Seyednasrollah; Jean-Christophe Domec; James S. Clark
- Source:
- Agricultural and forest meteorology 2019 v.269-270 pp. 220-230
- ISSN:
- 0168-1923
- Subject:
- air; calibration; canopy; climate; data collection; drought; dry season; ecosystem management; energy balance; evapotranspiration; monitoring; remote sensing; surface temperature; thermal stress; uncertainty; vegetation; water stress; Northwestern United States
- Abstract:
- ... Monitoring drought in real-time using minimal field data is a challenge for ecosystem management and conservation. Most methods require extensive data collection and in-situ calibration and accuracy is difficult to evaluate. Here, we demonstrated how the space-borne canopy “thermal stress”, defined as surface-air temperature difference, provides a reliable surrogate for drought-induced water stres ...
- DOI:
- 10.1016/j.agrformet.2019.02.016
- https://doi.org/10.1016/j.agrformet.2019.02.016
- Author:
- Jiangong Liu; Derrick Y.F. Lai
- Source:
- Agricultural and forest meteorology 2019 v.278 pp. 107644
- ISSN:
- 0168-1923
- Subject:
- Kandelia; carbon; carbon dioxide; carbon dioxide production; carbon sinks; chlorides; dry season; ecosystem respiration; eddy covariance; estuaries; global warming; gross primary productivity; ions; mangroves (trees); net ecosystem exchange; organic matter; path analysis; photosynthesis; river flow; seasonal variation; sodium; subtropics; temperature; water salinity; wet season; wetlands
- Abstract:
- ... Coastal mangrove wetlands have an excellent potential in sequestrating atmospheric carbon dioxide (CO₂) owing to their high primary productivity as well as slow anaerobic decomposition of organic matter. Yet, there is hitherto a paucity of researches examining the temporal variations and environmental controls of ecosystem-scale CO₂ fluxes in subtropical mangroves using quasi-continuous, high temp ...
- DOI:
- 10.1016/j.agrformet.2019.107644
- https://doi.org/10.1016/j.agrformet.2019.107644
- Author:
- C.M. Tfwala; L.D. van Rensburg; Z.A. Bello; P.C. Zietsman
- Source:
- Agricultural and forest meteorology 2019 v.275 pp. 296-304
- ISSN:
- 0168-1923
- Subject:
- buffaloes; canopy; capacitance probes; diurnal variation; dry environmental conditions; dry season; ecosystems; groundwater; heat; hydrologic cycle; mining; plant available water; seasonal variation; soil profiles; soil water content; summer; transpiration; tree and stand measurements; trees; vadose zone; water content; water table; watersheds; wet season
- Abstract:
- ... The major route through which water from the earth’s surface re-enters the hydrologic cycle in forested ecosystems is via tree transpiration (T). It is therefore important to have detailed understanding of the quantity and source of water transpired by different tree species. The aims of this study were to i) assess the trends of T for selected tree species (camel thorn, sweet thorn, shepherd’s tr ...
- DOI:
- 10.1016/j.agrformet.2019.05.030
- https://doi.org/10.1016/j.agrformet.2019.05.030