globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-515-2020
论文题名:
Impact of revegetation of the Loess Plateau of China on the regional growing season water balance
作者: Ge J.; Pitman A.J.; Guo W.; Zan B.; Fu C.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:2
起始页码: 515
结束页码: 533
语种: 英语
Scopus关键词: Evapotranspiration ; Hydrology ; Landforms ; Rain ; Revegetation ; Runoff ; Soil conservation ; Soil moisture ; Weather forecasting ; Deep soil moisture ; Environmental problems ; Grain for greens ; Growing season ; High resolution simulations ; Human settlements ; Loess plateau of chinas ; Weather research and forecasting models ; Sediments ; agricultural land ; evapotranspiration ; growing season ; rainfall ; runoff ; soil moisture ; water budget ; China ; Loess Plateau
英文摘要: To resolve a series of ecological and environmental problems over the Loess Plateau, the "Grain for Green Program" (GFGP) was initiated at the end of 1990s. Following the conversion of croplands and bare land on hillslopes to forests, the Loess Plateau has displayed a significant greening trend, which has resulted in soil erosion being reduced. However, the GFGP has also affected the hydrology of the Loess Plateau, which has raised questions regarding whether the GFGP should be continued in the future. We investigated the impact of revegetation on the hydrology of the Loess Plateau using relatively high-resolution simulations and multiple realizations with the Weather Research and Forecasting (WRF) model. Results suggest that revegetation since the launch of the GFGP has reduced runoff and soil moisture due to enhanced evapotranspiration. Further revegetation associated with the GFGP policy is likely to further increase evapotranspiration, and thereby reduce runoff and soil moisture. The increase in evapotranspiration is associated with biophysical changes, including deeper roots that deplete deep soil moisture stores. However, despite the increase in evapotranspiration, our results show no impact on rainfall. Our study cautions against further revegetation over the Loess Plateau given the reduction in water available for agriculture and human settlements and the lack of any significant compensation from rainfall. © 2020 Wiley-Blackwell. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162799
Appears in Collections:气候变化与战略

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作者单位: Ge, J., Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China, ARC Centre of Excellence for Climate Extremes and Climate Change Research Centre, University of New South Wales, Sydney, 2052, Australia; Pitman, A.J., ARC Centre of Excellence for Climate Extremes and Climate Change Research Centre, University of New South Wales, Sydney, 2052, Australia; Guo, W., Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China, Joint International Research Laboratory of Atmospheric and Earth System Sciences, Nanjing University, Nanjing, 210023, China; Zan, B., Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China, University of Chinese Academy of Sciences, Beijing, 100049, China; Fu, C., Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China, Joint International Research Laboratory of Atmospheric and Earth System Sciences, Nanjing University, Nanjing, 210023, China

Recommended Citation:
Ge J.,Pitman A.J.,Guo W.,et al. Impact of revegetation of the Loess Plateau of China on the regional growing season water balance[J]. Hydrology and Earth System Sciences,2020-01-01,24(2)
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