[1]谢刚,谢元贵,廖小锋,等.基于水土流失敏感性的岩溶地区景观生态风险评价——以黔南州为例[J].水土保持研究,2018,25(03):298-304.
 XIE Gang,XIE Yuangui,LIAO Xiaofeng,et al.Ecological Risk Assessment Based on Soil and Water Loss in Karst Area—A Case Study of Qiannan Prefecture[J].,2018,25(03):298-304.
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基于水土流失敏感性的岩溶地区景观生态风险评价——以黔南州为例()
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《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]

卷:
25卷
期数:
2018年03期
页码:
298-304
栏目:
出版日期:
2018-04-10

文章信息/Info

Title:
Ecological Risk Assessment Based on Soil and Water Loss in Karst Area—A Case Study of Qiannan Prefecture
作者:
谢刚 谢元贵 廖小锋 肖玖军 卢兰
贵州省山地资源研究所, 贵阳 550001
Author(s):
XIE Gang XIE Yuangui LIAO Xiaofeng XIAO Jiujun LU Lan
Institute of Guizhou Mountainous Resources, Guiyang 550001, China
关键词:
水土流失敏感性岩溶景观生态风险评价
Keywords:
soil erosion sensitivitykarstlandscape ecological riskevaluation
分类号:
S157.1
摘要:
为揭示岩溶地区水土流失与生态格局的相关性,分析水土流失敏感性背景下景观生态风险的空间特征。以黔南州为研究对象,融合RUSLE模型和ERI评价方法,在分析水土流失敏感性的基础上,对县域尺度的景观生态风险进行了定量化评价。结果表明:(1) 黔南州水土流失敏感性以中度、轻度和低敏感区为主,其总面积为22 974.42 km2,比重达88.86%,但重度、极度敏感区面积仅占11.14%,且降水侵蚀力、地表起伏度和石漠化等级的空间相关性高。(2) 低生态风险区主要由水土流失轻度、不敏感区构成,耕地面积比重大(72.07%),高生态风险区则以中度、重度敏感区为主,且建设用地面积比重大,说明水土流失敏感性就越高,则区域生态风险越高。上述研究表明,从水土流失敏感性的角度评价景观生态风险,融合了景观格局和水土流失状况等信息,不仅丰富了区域生态风险评价方法,也为区域生态保护与修复提供了决策依据。
Abstract:
In order to reveal the correlation between soil and water loss and ecological pattern in karst area, the spatial characteristics of landscape ecological risk under the sensitive background of soil erosion are analyzed. The paper took Qiannan as the research case, combined RUSLE model and ERI evaluation method, we quantitatively analyzed the landscape ecological risk on County scale based on the sensitivity analysis of soil erosion. The results showed that:(1) to moderate, mild and low sensitive area based sensitivity of soil erosion in Qiannan Prefecture, the total area is 22 974.42 km2, the proportion is 88.86%, but severe and extremely sensitive area account for only 11.14%, and the rainfall erosion force, surface undulation and desertification have the high spatial correlation; (2) low ecological risk zone mainly distributes in the area with slight soil erosion and mild sensitivity and cultivated land accounting for 72.07%; high ecological risk areas distribute in the regions with moderate and severe sensitivity, and large construction land area, showing that soil erosion sensitivity is higher, the regional ecological risk is high. The study shows that landscape ecological risk assessment from the perspective of soil erosion sensitivity and integration of landscape pattern and ecological environment quality information not only enriches the regional ecological risk assessment method, but also provides decision-making basis for regional ecological protection and restoration.

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备注/Memo

备注/Memo:
收稿日期:2017-06-08;改回日期:2017-07-28。
基金项目:贵州科学院院长基金(黔科院字[2016]05号);贵州省科技计划项目(黔科合SY字[2013]3169号);黔科合SY字[2009]3084号)
作者简介:谢刚(1987-),男,贵州龙里县人,硕士研究生,助理研究员,主要从事水土保持及土地资源研究。E-mail:564290987@qq.com
通讯作者:谢元贵(1982-),男,四川达州人,硕士研究生,副研究员,主要从事土地资源及水土保持研究。E-mail:yuangui_xie@163.com
更新日期/Last Update: 1900-01-01