文献类型：期刊文献

英文题名：Sensitivity and attribution analysis of vegetation changes on evapotranspiration with the Budyko framework in the Baiyangdian catchment, China

作者：Wang, Henian[1,2] Lv, Xizhi[3] Zhang, Manyin[1,2]

第一作者：王贺年;Wang, Henian

通信作者：Zhang, MY[1];Lv, XZ[2]|[a00051fe3588fbc8d8c88]张曼胤;

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[2]Beijing Key Lab Wetland Serv & Restorat, Beijing 100091, Peoples R China;[3]Yellow River Inst Hydraul Res, Zhengzhou 450003, Peoples R China

年份：2021

卷号：120

外文期刊名：ECOLOGICAL INDICATORS

收录：;EI(收录号：20203909225843);Scopus(收录号：2-s2.0-85091203380);WOS:【SCI-EXPANDED(收录号:WOS:000591905100006)】；

基金：This research was financially supported by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2019SZ009), the National Natural Science Foundation of China (No. 51809265, 51979118) and Central Nonprofit Research Institutions Basic Scientific Research Special Fund (HKY-JBYW-2019-01).

语种：英文

外文关键词：Attribution analysis; Sensitivity; Budyko parameter; Evapotranspiration; Vegetation

摘要：Due to its role in intercepting and evaporating water, vegetation has a great influence on the catchment hydrological process, and an increased quantitative understanding of how vegetation changes affect the terrestrial water cycle is of considerable interest for a range of spatial scales. In this study, we determine the effects of vegetation changes on evapotranspiration within the Budyko framework by adapting an analytical expression between vegetation and the Budyko parameter at a steady state. We then analyzed the attributions for evapotranspiration change in the Baiyangdian catchment and quantified the effects of vegetation change. The evapotranspiration changes during 1998-2017 in the Baiyangdian catchment were mainly caused by climate change, which accounted for 58.56%, and the contribution of the Budyko parameter (n) change to evapotranspiration was 40.04%. Among the impact factors, the effect of vegetation change on evapotranspiration was not the largest, with vegetation changes in the Baiyangdian catchment resulting in a decrease in evapotranspiration of 22.9715 mm, but only accounting for 10.23%. And we also discuss the spatial pattern of the sensitivities of evapotranspiration to vegetation based on the 66 catchments in the Hai River basin, and the results indicate that an increase in the normalized difference vegetation index (NDVI) would cause a decrease in evapotranspiration in dry regions (W < 1) and cause an increase in evapotranspiration in wet regions (W > 1). Evapotranspiration was more sensitive to NDVI changes in regions of W closer to 1.