干旱区生态环境知识资源中心(Arid): Analyzing the influence of landscape pattern change on ecological water requirements in an arid/semiarid region of China

Arid

DOI	10.1016/j.jhydrol.2019.124098
	Analyzing the influence of landscape pattern change on ecological water requirements in an arid/semiarid region of China
	Zhao, Fen 1; Li, Hui 1; Li, Chunhui 1; Cai, Yanpeng 2; Wang, Xuan 1,2; Liu, Qiang 2
通讯作者	Li, Chunhui
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	578
英文摘要	With climate change and the intensification of human activities, landscape patterns have undergone important changes. These changes can have multiple impact on hydrology, nutrient transport between soil and vegetation and ecological function and health in vegetative ecosystems. Dynamic changes in landscape patterns may affect the ecological water requirements (EWRs) of vegetation. Based on meteorological data, soil data and 6 years of land use data (from 1990 to 2015), the EWRs were obtained through the Penman-Monteith formula. eight suitable landscape indices (Patch Density (PD), Connectivity Index (COHESION), Largest Patch Index (LPI), Aggregation Index (AI), Shannon Diversity Index (SHDI), Contagion Index (CONTAG), Separation Index (SPLIT), and Landscape Shape Index (LSI)) were used to explore the spatial and temporal characteristics of landscape patterns. Furthermore, the influences of landscape pattern changes on the EWRs of the middle main reaches of the Yellow River, China, were investigated. From 1990 to 2015, the total number of patches in the landscape pattern of the watershed increased, and the patch shape became more complex; the EWRs decreased from 392.7 mm to 276.5 mm, and the annual volume of the EWRs in the study area decreased from 124.8 x 10(8) m(3) to 89.6 x 10(8) m(3). The EWRs had a positive correlation with the LPI, indicating that the changes in the largest patch had a great impact on the EWRs. The EWRs also had a negative correlation with the SPLIT, showing that the more fragmented the landscape patches, the smaller the EWRs. With an increase in SHDI, the EWRs showed a downward trend. Furthermore, the EWRs showed a downward trend with decreasing CONTAG and COHESION. These results provide useful information for ecological restoration and provide an important reference for ecological environmental protection and the optimal allocation of water resources in arid/semiarid regions around the world. In the future, the EWRs can be regulated, and the utilization rate of water resources can be improved, by combining the current ecological environmental protection policies of the Yellow River Basin and managing future trends in landscape patterns.
英文关键词	Land use/cover The middle main reaches of the Yellow River Landscape pattern Landscape indices Ecological water requirements (EWRs)
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000497250200081
WOS关键词	YELLOW-RIVER BASIN ; US SANDY LAND ; ENVIRONMENTAL FLOWS ; SEDIMENT DISCHARGE ; SPATIAL-PATTERNS ; NON-STATIONARITY ; LOWER REACHES ; TARIM RIVER ; VEGETATION ; IMPACT
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
EI主题词	2019-11-01
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310673
作者单位	1.Beijing Normal Univ, Sch Environm, Minist Educ, Key Lab Water & Sediment Sci, Beijing 100875, Peoples R China; 2.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Fen,Li, Hui,Li, Chunhui,et al. Analyzing the influence of landscape pattern change on ecological water requirements in an arid/semiarid region of China[J]. 北京师范大学,2019,578.
APA	Zhao, Fen,Li, Hui,Li, Chunhui,Cai, Yanpeng,Wang, Xuan,&Liu, Qiang.(2019).Analyzing the influence of landscape pattern change on ecological water requirements in an arid/semiarid region of China.JOURNAL OF HYDROLOGY,578.
MLA	Zhao, Fen,et al."Analyzing the influence of landscape pattern change on ecological water requirements in an arid/semiarid region of China".JOURNAL OF HYDROLOGY 578(2019).