干旱区生态环境知识资源中心(Arid): Analysis of the influence of the water balance process on the change of landscape patterns in the upper reaches of the Yangtze River

Arid

DOI	10.2166/wp.2022.096
	Analysis of the influence of the water balance process on the change of landscape patterns in the upper reaches of the Yangtze River
	Liu, Yuting; Xu, Jijun; Yuan, Zhe; Sha, Zhigui
通讯作者	Liu, YT
来源期刊	WATER POLICY
ISSN	1366-7017
EISSN	1996-9759
出版年	2022
卷号	24 期号:2 页码:261-281
英文摘要	Based on hydrometeorological data and land-use data (from 1980 to 2015), the effects of water balance on landscape patterns in the upper reaches of the Yangtze River were studied by using water balance analysis, landscape index method, and other methods. Eight appropriate landscape indices (NP, COHESION, LPI, AI, SHDI, CONTAG, SPLIT, and LS) were selected to explore the spatial and temporal characteristics of landscape patterns. From 1980 to 2015, the precipitation in the study area decreased by 6.97%, and the annual precipitation of farmland maintained at about 1,050 mm. The evapotranspiration (ET) had little change in general, but it varies greatly under different land-use types. Soil water storage variables showed a downward trend, and soil water storage variables of various land-use types changed dramatically during the study period. The total number of patches increased and the patch shape became more complex. At the level of landscape structure, SHDI and SPLIT increased, while CONTAG and COHESION decreased, the degree of patch fragmentation and landscape heterogeneity improved. Correlation analysis showed that from a time perspective, LSI, SPLIT, and SHDI were significantly negatively correlated with ET, and CONTAG was significantly positively correlated with ET. There was a significant negative correlation between SPLIT and SW, and a significant positive correlation between COHESION and SW. These results indicated that with the decrease of ET and soil water storage variables, patches became more dispersed and landscape patterns became more fragmented. From the perspective of spatial distribution, the increase of SW increased landscape diversity and decreased landscape connectivity and contagion. The correlation coefficients between SW and the three groups of landscape pattern indexes (SHDI,CONTAG, and COHESION) were higher than those between ET and the three groups of landscape pattern indexes, which meant that soil water is more correlated with landscape pattern characteristics, and the effect of soil water change on landscape heterogeneity is more obvious. The study of the relationship between hydrological processes and landscape pattern characteristics in this paper enriches and expands the theoretical method system of ecological hydrology and ecological environmental protection in arid/semi-arid regions in our country.
英文关键词	Landscape indices Landscape pattern Land use cover Upper Yangtze River Basin Water balance
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000751951100001
WOS关键词	DRIVING FORCES ; WOODLAND ; DYNAMICS
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376324
推荐引用方式 GB/T 7714	Liu, Yuting,Xu, Jijun,Yuan, Zhe,et al. Analysis of the influence of the water balance process on the change of landscape patterns in the upper reaches of the Yangtze River[J],2022,24(2):261-281.
APA	Liu, Yuting,Xu, Jijun,Yuan, Zhe,&Sha, Zhigui.(2022).Analysis of the influence of the water balance process on the change of landscape patterns in the upper reaches of the Yangtze River.WATER POLICY,24(2),261-281.
MLA	Liu, Yuting,et al."Analysis of the influence of the water balance process on the change of landscape patterns in the upper reaches of the Yangtze River".WATER POLICY 24.2(2022):261-281.