Evaluating the performance of conservation practices under climate change scenarios in the Miyun Reservoir Watershed, China

doi:10.1016/j.ecoleng.2019.105700

	Evaluating the performance of conservation practices under climate change scenarios in the Miyun Reservoir Watershed, China
	Qiu, Jiali 1; Shen, Zhenyao 1; Hou, Xiaoshu 1; Xie, Hui 1; Leng, Guoyong 2
刊名	ECOLOGICAL ENGINEERING
	2020-01-15
卷号	143 页码:12
关键词	Climate change SWAT Best Management Practices BMP efficiency BMP optimization Miyun Reservoir Watershed
ISSN号	0925-8574
DOI	10.1016/j.ecoleng.2019.105700
通讯作者	Shen, Zhenyao(zyshen@bnu.edu.cn)
英文摘要	Climate change is one of the major challenges in watershed management systems. Rising air temperatures, increasing precipitation in winter, and decreasing precipitation in summer as well as increases in extreme weather events have increased flooding and droughts and further affected water quality in the Miyun Reservoir Watershed (MRW). This study used the Soil and Water Assessment Tool (SWAT) model with five downscaled general circulation models (GCMs) to quantify the impact of climate change on hydrology, soil erosion, nutrient cycling, and the performance of Best Management Practices (BMPs) at watershed scale, driven by RCPs 2.6, 4.5, and 8.5. Compared with the baseline scenario, the results indicated that climate variability, especially precipitation and temperature, had great effects on surface runoff, sediment yields, and nutrient losses and further significantly affected BMP efficiency, although the magnitudes of change differed among the RCPs. Monthly sediment and nutrient loads increased substantially in all climate change scenarios, especially in flood season, due to the increase in precipitation intensity. Although BMPs were identified to be not appreciably effective in controlling water balance, they were effective in reducing sediment and nutrient losses. Based on this case, a simulation-optimization framework was applied to develop future watershed management strategies with BMP configurations because of their climate adaptation benefits, water improvement targets, and economical cost. The results indicated that the discrepancy among different climate scenarios was reflected by the number and types of BMPs and their spatial distributions, especially structural BMPs. This study suggests that the increasing frequency of rainfall events may decrease the efficiency of BMPs in the MRW, and watershed management should be adjusted according to changing climate in the future.
资助项目	National Natural Science Foundation of China[51579011] ; fund for Innovative Research Group of the National Natural Science Foundation of China[51721093]
WOS关键词	NONPOINT-SOURCE POLLUTION ; LONG-TERM VARIATIONS ; MANAGEMENT-PRACTICES ; CHANGE IMPACTS ; LAND-USE ; PRACTICE IMPLEMENTATION ; REDUNDANCY ANALYSIS ; COST-EFFECTIVENESS ; RIVER-BASIN ; QUALITY
WOS研究方向	Environmental Sciences & Ecology ; Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000505931400011
资助机构	National Natural Science Foundation of China ; fund for Innovative Research Group of the National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/131534]
专题	中国科学院地理科学与资源研究所
通讯作者	Shen, Zhenyao
作者单位	1.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Jiali,Shen, Zhenyao,Hou, Xiaoshu,et al. Evaluating the performance of conservation practices under climate change scenarios in the Miyun Reservoir Watershed, China[J]. ECOLOGICAL ENGINEERING,2020,143:12.
APA	Qiu, Jiali,Shen, Zhenyao,Hou, Xiaoshu,Xie, Hui,&Leng, Guoyong.(2020).Evaluating the performance of conservation practices under climate change scenarios in the Miyun Reservoir Watershed, China.ECOLOGICAL ENGINEERING,143,12.
MLA	Qiu, Jiali,et al."Evaluating the performance of conservation practices under climate change scenarios in the Miyun Reservoir Watershed, China".ECOLOGICAL ENGINEERING 143(2020):12.