文献类型：期刊文献

英文题名：Effects of drought on freshwater ecosystem services in poverty-stricken mountain areas

作者：Han, Huiqing Gao, Hongjuan Huang, Ya Chen, Xiaoqiao Chen, Mengling Li, Jinyan

通信作者：Han, HQ[1]

机构：[1]Guizhou Inst Technol, Coll Architecture & Urban Planning, Guiyang 550003, Guizhou, Peoples R China;[2]Guizhou Normal Coll, Coll Geog & Tourism, Guiyang 550018, Guizhou, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Coll Architecture & Urban Planning, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院;

年份：2019

卷号：17

外文期刊名：GLOBAL ECOLOGY AND CONSERVATION

收录：;Scopus(收录号：2-s2.0-85060673227);WOS:【SSCI(收录号:WOS:000465448800027)，SCI-EXPANDED(收录号:WOS:000465448800027)】；

基金：This work was supported by the Guizhou Education Department Project (No. [2017]217, [2018]262), Academic Cultivation and Exploration Innovation Project of Guizhou Institute of Technology (No. [2017]5789-23), the Humanity and Social Science Youth foundation of the Ministry of Education (18YJCZH042), and the Scientific Research Foundation of the Guizhou Institute of Technology. Project supported by Karst Dynamics Laboratory, MNR and GZAR (No. KDL201801).

语种：英文

外文关键词：Freshwater ecosystem services; Drought; Spatial pattern; Tradeoffs and synergy; InVEST model

摘要：As a result of global temperature warming, the frequency and intensity of global extreme climate events have increased, which has a large impact on the structure, composition, and function of regional ecosystems, thereby weakening the supply capacity of ecosystem services and the sustainable development of the social economy. The Guizhou Province in China is characterized by frequent droughts, fragile mountain ecosystems and poverty. We used Guizhou Province as an example and analyzed the impacts of drought on freshwater ecosystem services. The results showed that the water yield and soil retention in Guizhou decreased due to the influence of annual and seasonal droughts. Annual droughts led to an increase in nutrient retention whereas seasonal droughts caused an increase or decrease in nutrient retention in the study area. The water yield and nutrient retention exhibited decreasing and increasing trends respectively with an increase in the degree of drought. However, changes in the soil retention in Guizhou had a week correlation with the degree of drought. There was a synergistic relationship between water yield and soil retention under the impacts of annual and seasonal droughts in Guizhou. Tradeoffs between water yield and nutrient retention, as well as between soil retention and nutrient retention, existed under the influence of annual drought. Nevertheless, tradeoffs or synergies between water yield and nutrient retention, as well as between soil retention and nutrient retention, were found under the influences of seasonal droughts. The results of this study provide science- based information for alleviating the adverse effects of drought on freshwater ecosystem services and contribute to the scientific management of freshwater ecosystem services. (C) 2019 Published by Elsevier B.V.