Evaluation Index System for Risk Assessment of Land Desertification in Karst Area

ZHANG Jun-yi; SU Wei-ci; SU Kai

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Evaluation Index System for Risk Assessment of Land Desertification in Karst Area

- Evaluation Index System for Risk Assessment of Land Desertification in Karst Area
- Bulletin of Soiland Water Conservation Vol. 30, Issue 2, Pages: 172-176(2011)
- 作者机构：
  
  1. 重庆师范大学地理科学学院
  2. 贵州科学院山地资源研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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ZHANG Jun-yi, SU Wei-ci, SU Kai. Evaluation Index System for Risk Assessment of Land Desertification in Karst Area[J]. Bulletin of Soiland Water Conservation, 2011, 30(2): 172-176.
DOI：

ZHANG Jun-yi, SU Wei-ci, SU Kai. Evaluation Index System for Risk Assessment of Land Desertification in Karst Area[J]. Bulletin of Soiland Water Conservation, 2011, 30(2): 172-176. DOI：

摘要

土地石漠化是西南喀斯特地区一种突出的生态环境问题

是西南喀斯特地区经济发展与生态建设中所面临的特殊的地域性环境问题

也是西南喀斯特地区实现全面可持续发展的主要障碍因素之一。在参考国内外相关研究成果的基础上

根据对石漠化概念的内涵及特点的分析

构建了石漠化概念模型

论述了土地石漠化与基底环境的基本反馈响应机制。根据模型将风险压力分为干扰、累积、演替、破碎这4大类

分析提取土地石漠化风险因子

按"压力—状态—响应"模型对土地石漠化风险因子进行了分级

初步建立了喀斯特地区土地石漠化风险评价指标体系。

Abstract

Desertification

as a prominent environmental problem in southwest karst rocky region

is a problem particularly for the regional economic development and ecological construction

challenging the comprehensively sustainable development in this region.According to domestic and foreign literature

a desertification model was developed based on analysis of the concept and characteristics of desertification.The feedback mechanisms between desertification and background environment were discussed.The model divided risk pressure into four categories

i.e.

disturbance

accumulation

succession

and fragmentation.The risk factors of desertification were then analyzed and classified based on the pressure—state—response model.An assessment system for desertification risk was establishment for karst rocky areas.

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