Risk assessment of non-point source pollution based on landscape pattern in the Hanjiang River basin, China

doi:10.1007/s11356-021-15603-w

	Risk assessment of non-point source pollution based on landscape pattern in the Hanjiang River basin, China
	Liu, Yi-wen 1; Li, Jia-ke 1; Xia, Jun 2,3; Hao, Gai-rui 1; Teo, Fang-Yenn 4
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2021-07-24
页码	15
关键词	Non-point source pollution risk Landscape pattern Location-weighted landscape contrast index Hanjiang River basin
ISSN号	0944-1344
DOI	10.1007/s11356-021-15603-w
通讯作者	Li, Jia-ke(xaut_ljk@163.com)
英文摘要	Non-point source (NPS) pollution has become a vital contaminant source affecting the water environment because of its wide distribution, hydrodynamic complexity, and difficulty in prevention and control. In this study, the identification and evaluation of NPS pollution risk based on landscape pattern were carried out in the Hanjiang River basin above Ankang hydrological section, Shaanxi province, China. Landscape distribution information was obtained through land use data, analyzing the contribution of "source-sink" landscape to NPS pollution through the location-weighted landscape contrast index. Using the NPS pollution risk index to identify and evaluate the regional NPS pollution risk considering the slope, cost distance, soil erosion, and precipitation erosion affect migration of pollutants. The results showed that (i) the pollution risk was generally high in the whole watershed, and the sub-watersheds dominated by "source" landscapes account for 74.61% of the whole basin; (ii) the high-risk areas were distributed in the central, eastern, and western regions of the river basin; the extremely high-risk areas accounted for 12.7% of the whole watershed; and the southern and northern regions were dominated by forestland and grassland with little pollution risk; (iii) "source" landscapes were mostly distributed in areas close to the river course, which had a great impact on environment, and the landscape pattern units near the water body needed to be further adjusted to reduce the influence of NPS pollution.
资助项目	Key Research and Development Project of Shaanxi Province[2019ZDLSF06-01]
WOS关键词	SURFACE-WATER QUALITY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000677235700009
资助机构	Key Research and Development Project of Shaanxi Province
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164755]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Jia-ke
作者单位	1.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Peoples R China 2.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 4.Univ Nottingham Malaysia, Fac Sci & Engn, Semenyih 43500, Selangor, Malaysia
推荐引用方式 GB/T 7714	Liu, Yi-wen,Li, Jia-ke,Xia, Jun,et al. Risk assessment of non-point source pollution based on landscape pattern in the Hanjiang River basin, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2021:15.
APA	Liu, Yi-wen,Li, Jia-ke,Xia, Jun,Hao, Gai-rui,&Teo, Fang-Yenn.(2021).Risk assessment of non-point source pollution based on landscape pattern in the Hanjiang River basin, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,15.
MLA	Liu, Yi-wen,et al."Risk assessment of non-point source pollution based on landscape pattern in the Hanjiang River basin, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021):15.