Spatial and temporal variations in soil erosion sensitivity in Danjiangkou City

Soil erosion is a major ecological problem in Danjiangkou reservoir area. Therefore, understanding the soil erosion mechanism of Danjiangkou reservoir area and conserving the water environment of the reservoir area is critical. Based on the revised universal soil loss equation(RUSLE) and the terrain...

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Autores principales:	MA Fangzheng, YU Xingxiu, HU Yanxia, LI Mingwei, CHENG Si, WANG Xingfeng, XIAO Juanhua
Formato:	article
Lenguaje:	ZH
Publicado:	Agro-Environmental Protection Institute, Ministry of Agriculture 2021
Materias:	danjiangkou city revised universal soil loss equation(rusle) soil erosion sensitivity gis Agriculture (General) S1-972 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/8ba6f7d8c3e9410a817fc428195dbf13
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spelling	oai:doaj.org-article:8ba6f7d8c3e9410a817fc428195dbf132021-12-03T02:29:42ZSpatial and temporal variations in soil erosion sensitivity in Danjiangkou City2095-681910.13254/j.jare.2020.0564https://doaj.org/article/8ba6f7d8c3e9410a817fc428195dbf132021-11-01T00:00:00Zhttp://www.aed.org.cn/nyzyyhjxb/html/2021/6/20210607.htmhttps://doaj.org/toc/2095-6819Soil erosion is a major ecological problem in Danjiangkou reservoir area. Therefore, understanding the soil erosion mechanism of Danjiangkou reservoir area and conserving the water environment of the reservoir area is critical. Based on the revised universal soil loss equation(RUSLE) and the terrain characteristics of mountainous and broken terrain in Danjiangkou City, five factors, including rainfall erosivity, soil erodibility, topographic relief, vegetation coverage, and gully density were selected to develop a soil erosion sensitivity evaluation system. With the help of ArcGIS 10.2 platform, the soil erosion sensitivity of Danjiangkou City from 2012 to 2017 was comprehensively evaluated and the spatial distribution characteristics of soil erosion sensitivity in the study area under different underlying surface elements were analyzed. The results showed that the soil erosion sensitivity of Danjiangkou City was generally high in the northern and southern regions and low in the central region. Soil erosion sensitivity was characterized majorly as marginal and moderate sensitivity. Highly sensitive and extremely sensitive areas accounted for 13.53% of the total study area; during the five years, the moderately sensitive, marginally sensitive, and insensitive areas in Danjiangkou City showed an increasing trend, while the highly sensitive and extremely sensitive areas showed a downward trend; sparse woodland and unused land were highly sensitive land use types in the study area. The potential risk index of soil erosion in the study area increased initially and decreased later with the increase in slope. The research findings can serve as a reference for studying the soil erosion mechanism and developing strategies for the conservation of soil, water, and the overall ecosystem in Danjiangkou City.MA FangzhengYU XingxiuHU YanxiaLI MingweiCHENG SiWANG XingfengXIAO JuanhuaAgro-Environmental Protection Institute, Ministry of Agriculturearticledanjiangkou cityrevised universal soil loss equation(rusle)soil erosion sensitivitygisAgriculture (General)S1-972Environmental sciencesGE1-350ZHJournal of Agricultural Resources and Environment, Vol 38, Iss 6, Pp 999-1009 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	danjiangkou city revised universal soil loss equation(rusle) soil erosion sensitivity gis Agriculture (General) S1-972 Environmental sciences GE1-350
spellingShingle	danjiangkou city revised universal soil loss equation(rusle) soil erosion sensitivity gis Agriculture (General) S1-972 Environmental sciences GE1-350 MA Fangzheng YU Xingxiu HU Yanxia LI Mingwei CHENG Si WANG Xingfeng XIAO Juanhua Spatial and temporal variations in soil erosion sensitivity in Danjiangkou City
description	Soil erosion is a major ecological problem in Danjiangkou reservoir area. Therefore, understanding the soil erosion mechanism of Danjiangkou reservoir area and conserving the water environment of the reservoir area is critical. Based on the revised universal soil loss equation(RUSLE) and the terrain characteristics of mountainous and broken terrain in Danjiangkou City, five factors, including rainfall erosivity, soil erodibility, topographic relief, vegetation coverage, and gully density were selected to develop a soil erosion sensitivity evaluation system. With the help of ArcGIS 10.2 platform, the soil erosion sensitivity of Danjiangkou City from 2012 to 2017 was comprehensively evaluated and the spatial distribution characteristics of soil erosion sensitivity in the study area under different underlying surface elements were analyzed. The results showed that the soil erosion sensitivity of Danjiangkou City was generally high in the northern and southern regions and low in the central region. Soil erosion sensitivity was characterized majorly as marginal and moderate sensitivity. Highly sensitive and extremely sensitive areas accounted for 13.53% of the total study area; during the five years, the moderately sensitive, marginally sensitive, and insensitive areas in Danjiangkou City showed an increasing trend, while the highly sensitive and extremely sensitive areas showed a downward trend; sparse woodland and unused land were highly sensitive land use types in the study area. The potential risk index of soil erosion in the study area increased initially and decreased later with the increase in slope. The research findings can serve as a reference for studying the soil erosion mechanism and developing strategies for the conservation of soil, water, and the overall ecosystem in Danjiangkou City.
format	article
author	MA Fangzheng YU Xingxiu HU Yanxia LI Mingwei CHENG Si WANG Xingfeng XIAO Juanhua
author_facet	MA Fangzheng YU Xingxiu HU Yanxia LI Mingwei CHENG Si WANG Xingfeng XIAO Juanhua
author_sort	MA Fangzheng
title	Spatial and temporal variations in soil erosion sensitivity in Danjiangkou City
title_short	Spatial and temporal variations in soil erosion sensitivity in Danjiangkou City
title_full	Spatial and temporal variations in soil erosion sensitivity in Danjiangkou City
title_fullStr	Spatial and temporal variations in soil erosion sensitivity in Danjiangkou City
title_full_unstemmed	Spatial and temporal variations in soil erosion sensitivity in Danjiangkou City
title_sort	spatial and temporal variations in soil erosion sensitivity in danjiangkou city
publisher	Agro-Environmental Protection Institute, Ministry of Agriculture
publishDate	2021
url	https://doaj.org/article/8ba6f7d8c3e9410a817fc428195dbf13
work_keys_str_mv	AT mafangzheng spatialandtemporalvariationsinsoilerosionsensitivityindanjiangkoucity AT yuxingxiu spatialandtemporalvariationsinsoilerosionsensitivityindanjiangkoucity AT huyanxia spatialandtemporalvariationsinsoilerosionsensitivityindanjiangkoucity AT limingwei spatialandtemporalvariationsinsoilerosionsensitivityindanjiangkoucity AT chengsi spatialandtemporalvariationsinsoilerosionsensitivityindanjiangkoucity AT wangxingfeng spatialandtemporalvariationsinsoilerosionsensitivityindanjiangkoucity AT xiaojuanhua spatialandtemporalvariationsinsoilerosionsensitivityindanjiangkoucity
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Spatial and temporal variations in soil erosion sensitivity in Danjiangkou City

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