Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027066 |
Influence of landscape heterogeneity on water available to tropical forests in an Amazonian catchment and implications for modeling drought response | |
Fang, Yilin1; Leung, L. Ruby2; Duan, Zhuoran1; Wigmosta, Mark S.1; Maxwell, Reed M.3; Chambers, Jeffrey Q.4; Tomasella, Javier5 | |
2017-08-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:16 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Brazil |
英文摘要 | The Amazon basin has experienced periodic droughts in the past, and intense and frequent droughts are predicted in the future. Landscape heterogeneity could play an important role in how tropical forests respond to drought by influencing water available to plants. Using the one-dimensional ACME Land Model and the three-dimensional ParFlow variably saturated flow model, numerical experiments were performed for a catchment in central Amazon to elucidate processes that influence water available for plant use and provide insights for improving Earth system models. Results from ParFlow show that topography has a dominant influence on groundwater table and runoff through lateral flow. Without any representations of lateral processes, ALM simulates very different seasonal variations in groundwater table and runoff compared to ParFlow even if it is able to reproduce the long-term spatial average groundwater table of ParFlow through simple parameter calibration. In the ParFlow simulations, even in the plateau with much deeper water table depth during the dry season in the drought year of 2005, plant transpiration is not water stressed as the soil saturation is still sufficient for the stomata to be fully open based on the empirical wilting formulation in the models. This finding is insensitive to uncertainty in atmospheric forcing and soil parameters, but the empirical wilting formulation is an important factor that should be addressed using observations and modeling of coupled plant hydraulics-soil hydrology processes in future studies. The results could be applicable to other catchments in the Amazon basin with similar seasonal variability and hydrologic regimes. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416382800004 |
WOS关键词 | LAND-SURFACE MODELS ; EARTH SYSTEM MODELS ; GROUNDWATER-FLOW ; INTERANNUAL VARIABILITY ; NUMERICAL-SOLUTION ; SUBSURFACE FLOW ; TERRAIN MODEL ; CLIMATE MODEL ; RAIN-FOREST ; LARGE-SCALE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34118 |
专题 | 气候变化 |
作者单位 | 1.Pacific Northwest Natl Lab, Earth Syst Sci Div, Richland, WA 99352 USA; 2.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA; 3.Colorado Sch Mines, Dept Geol & Geol Engn, Golden, CO 80401 USA; 4.Lawrence Berkeley Natl Lab, Climate Sci Dept, Earth Sci Div, Berkeley, CA USA; 5.Ctr Nacl Monitoramento & Alerta Desastres Nat, Sao Paulo, Brazil |
推荐引用方式 GB/T 7714 | Fang, Yilin,Leung, L. Ruby,Duan, Zhuoran,et al. Influence of landscape heterogeneity on water available to tropical forests in an Amazonian catchment and implications for modeling drought response[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(16). |
APA | Fang, Yilin.,Leung, L. Ruby.,Duan, Zhuoran.,Wigmosta, Mark S..,Maxwell, Reed M..,...&Tomasella, Javier.(2017).Influence of landscape heterogeneity on water available to tropical forests in an Amazonian catchment and implications for modeling drought response.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(16). |
MLA | Fang, Yilin,et al."Influence of landscape heterogeneity on water available to tropical forests in an Amazonian catchment and implications for modeling drought response".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.16(2017). |
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