Ecological Security Assessment on Special Poverty-stricken Areas in Liupan Mountain

ZHAO Ying; LIU Xiao-peng; GUO Yong-jie

doi:10.13961/j.cnki.stbctb.2014.02.034

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Ecological Security Assessment on Special Poverty-stricken Areas in Liupan Mountain

- Ecological Security Assessment on Special Poverty-stricken Areas in Liupan Mountain
- Bulletin of Soiland Water Conservation Vol. 33, Issue 2, Pages: 157-162(2014)
- 作者机构：
  
  宁夏大学资源环境学院,宁夏,银川,750021
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.02.034
  CLC：
- Published：2014
- 稿件说明：
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ZHAO Ying, LIU Xiao-peng, GUO Yong-jie. Ecological Security Assessment on Special Poverty-stricken Areas in Liupan Mountain[J]. Bulletin of Soiland Water Conservation, 2014, 33(2): 157-162.
DOI：

ZHAO Ying, LIU Xiao-peng, GUO Yong-jie. Ecological Security Assessment on Special Poverty-stricken Areas in Liupan Mountain[J]. Bulletin of Soiland Water Conservation, 2014, 33(2): 157-162. DOI： 10.13961/j.cnki.stbctb.2014.02.034.

摘要

宁夏六盘山连片特困区生态安全评价对其环境保护和脱贫工作具有重要实践意义。以2001-2011年统计数据为基础

依据PSR(压力-状态-响应)模型构建了由19项指标组成的生态安全指标体系

运用熵值法计算出六盘山连片特困地区7个国家级贫困县的生态安全综合指数

并分析其时空演变趋势。结果表明:(1)时间尺度上有3个明显阶段。研究区的生态安全指数首先呈现出缓慢下降(2001-2006年)至最低点(2007-2008年)之后

逐渐上升(2009-2011年)的U形趋势

表明研究区的生态安全状况经历了不断恶化之后又开始逐渐好转的过程。(2)生态安全的空间分异明显

具体可分为4类地区:彭阳、隆德和泾源县的生态安全状况优于其它地区且保持稳定;西吉和海原县的生态安全指数始终低于其它地区;原州区的生态安全状态逐渐好转

到2011年其生态安全指数(0.5282)仅次于彭阳县(0.6194);同心县生态安全状况不断恶化

但仍高于西吉县和海原县。

Abstract

Ecological security assessment is important for poverty reduction and environmental protection in large poor areas in Lipan Mountain in Ningxia Hui Autonomous Region. Based on data from 2001 to 2011

press-state-response(PSR) model was used to construct index system which consists of 19 indicators in this research and entropy method was used to calculate ecological security index value of seven poverty counties in Liupan Mountain area. The results were as follows: (1) On the time scale

it can be classified as three phases: during 2001 and 2006

ecological security index value slowed down and to be lowest in 2007 and 2008

and then began to rise slowly

showing that the study area had taken a turn for the better after a period of deterioration. (2) On the space scale

it can be classified as four areas: ecological security index values of Pengyang

Longde and Jingyuan County are higher and stable; while ecological security index values of Xiji and Haiyuan County remained at a low level; ecological security state of Yuanzhou District improved gradually

and its ecological safety in 2011(0.5282) was only next to that in Pengyang County(0.6194); Moreover

ecological security index value of Tongxin County decreased

but still kept higher than that of Xiji and Haiyuan County.

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