干旱区生态环境知识资源中心(Arid): Impact of Land Use Change on Non-Point Source Pollution in a Semi-Arid Catchment under Rapid Urbanisation in Bolivia

Arid

DOI	10.3390/w13040410
	Impact of Land Use Change on Non-Point Source Pollution in a Semi-Arid Catchment under Rapid Urbanisation in Bolivia
	Gossweiler, Benjamin; Wesstrom, Ingrid; Messing, Ingmar; Villazon, Mauricio; Joel, Abraham
通讯作者	Gossweiler, B (corresponding author), San Simon Univ, Ctr Aerosp Surveys & Geog Informat Syst Applicat, POB 5294, Cochabamba, Bolivia. ; Gossweiler, B (corresponding author), Swedish Univ Agr Sci, Dept Soil & Environm, POB 7014, SE-75007 Uppsala, Sweden.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:4
英文摘要	Changes in pollution pressure exerted on the Rocha River in Bolivia from diffuse sources were assessed using potential non-point pollution indexes (PNPI) for 1997 and 2017. PNPI is a simple, low-effort, time- and resource-saving method suitable for data-scarce regions, as it works at catchment level with commonly available geographical data. Land use type (obtained by Landsat imagery classification), runoff (determined by runoff coefficient characterisation) and distance to river network (calculated at perpendicular distance) were each transformed into corresponding indicators to determine their relative importance in generating pollution. Weighted sum, a multi-criteria analysis tool in the GIS environment, was used to combine indicators with weighting values. Different weighting values were assigned to each of the indicators resulting in a set of six equations. The results showed that higher PNPI values corresponded to human settlements with high population density, higher runoff values and shorter distance to river network, while lower PNPI values corresponded to semi-natural land use type, lower runoff coefficient and longer distances to river. PNPI values were positively correlated with measured nitrate and phosphate concentrations at six sub-catchment outlets. The correlation was statistical significant for phosphate in 2017. Maps were produced to identify priority source areas that are more likely to generate pollution, which is important information for future management.
英文关键词	potential non-point pollution index Rocha River water quality degradation urbanisation land use indicator runoff indicator distance indicator
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000624888500001
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369039
作者单位	[Gossweiler, Benjamin] San Simon Univ, Ctr Aerosp Surveys & Geog Informat Syst Applicat, POB 5294, Cochabamba, Bolivia; [Gossweiler, Benjamin; Wesstrom, Ingrid; Messing, Ingmar; Joel, Abraham] Swedish Univ Agr Sci, Dept Soil & Environm, POB 7014, SE-75007 Uppsala, Sweden; [Villazon, Mauricio] San Simon Univ, Lab Hidraul, POB 1832, Cochabamba, Bolivia
推荐引用方式 GB/T 7714	Gossweiler, Benjamin,Wesstrom, Ingrid,Messing, Ingmar,et al. Impact of Land Use Change on Non-Point Source Pollution in a Semi-Arid Catchment under Rapid Urbanisation in Bolivia[J],2021,13(4).
APA	Gossweiler, Benjamin,Wesstrom, Ingrid,Messing, Ingmar,Villazon, Mauricio,&Joel, Abraham.(2021).Impact of Land Use Change on Non-Point Source Pollution in a Semi-Arid Catchment under Rapid Urbanisation in Bolivia.WATER,13(4).
MLA	Gossweiler, Benjamin,et al."Impact of Land Use Change on Non-Point Source Pollution in a Semi-Arid Catchment under Rapid Urbanisation in Bolivia".WATER 13.4(2021).