地理科学

地理科学 ›› 2013, Vol. 33 ›› Issue (2): 189-194.doi: 10.13249/j.cnki.sgs.2013.02.189

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基于PSDR理论框架下长江上游生态系统退化威胁评价与空间分布研究

任平1,2(), 程武学1,2, 洪步庭1,2, 周介铭1,2   

  1. 1.四川师范大学西南土地资源评价与监测教育部重点实验室 四川 成都 610066
    2.四川师范大学地理与资源科学学院 四川 成都 610066
  • 收稿日期:2012-06-25 修回日期:2012-11-02 出版日期:2013-02-20 发布日期:2013-02-20
  • 作者简介:

    作者简介：任 平（1978-）,男,湖北荆门人,副教授,博士,主要从事资源与环境经济学,土地资源管理等方面研究。E-mail：pren121680@126.com

  • 基金资助:
    国家“973”项目（2009CB421105）,全球环境基金（GEF）子项目（C/IV/S/06/060）、四川省环境保护厅2012专项资金项目和四川省科技厅科技支撑项目资助

Evaluation of Ecosystem Degradation Threat and Study of Spatial Distribution in the Upper Reaches of the Changjiang River based on PSDR Framework

Ping REN1,2(), Wu-xue CHENG1,2, Bu-ting HONG1,2, Jie-ming ZHOU1,2   

  1. 1. Key Lab of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Sichuan Normal University, Chengdu, Sichuan 610066,China
    2. Institute of Geography and Resources Science, Sichuan Normal University, Chengdu, Sichuan 610066,China
  • Received:2012-06-25 Revised:2012-11-02 Online:2013-02-20 Published:2013-02-20

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36

摘要：

以长江上游为研究区域,采用RS、GIS技术,设计了“压力-状态-退化-响应”（PSDR）评价理论框架和模式,开展大尺度的生态系统（森林、草地、农田、湿地）退化威胁评价研究工作,并深入分析其空间分布特征。研究结果表明：长江上游生态系统退化威胁程度整体上处于较为严重的状态,中度威胁及以上地区占整个生态系统面积的74.54%。其中,重度威胁区占18.72%,高度威胁区占25.59%,中度威胁区占30.22%,轻度威胁区占17.32%,微度威胁区占8.14%。退化威胁最严重的地区主要位于青海格尔木市、治多县、杂多县和玉树县,四川省木里藏族自治县、康定、汶川、北川、雅江、马尔康县等,云南省香格里拉和维西僳僳族自治县,甘肃省迭部县、文县和舟曲县,湖北省神农架区、巫山、巴东、兴山和秭归县以及重庆市的垫江、梁平、大足、潼南等县。

关键词: 生态系统, PSDR框架, 退化威胁, 空间分布, 长江上游

Abstract:

In this article, the upper reaches of the Changjiang River was chosen as the study region, RS and GIS technologies were adopted and the " Pressure - State - Degradation - Response " (PSDR) theoretic frame and model was designed to evaluate the ecosystem (forest, grassland, farmland, wetland) degradation threat in a large scale, and the spatial distribution pattern of degradation station in detail was analyzed. It was shown by the results that the ecosystem degradation threat level of the upper reaches of the Changjiang River was overall under a serious condition, 74.54% of the area of the whole ecosystem was at least in a middle-threat level. Of which, the region of extreme threat accounted for 18.72%, 25.59% of the region was highly threatened, 30.22% got moderate threat, the lightly threat region accounted for 17.32% and 8.14% for slightly threat region. The most serious regions of the ecosystem degradation threat of the upper reaches of the Changjiang River were mainly located in Golmud City, Zhiduo County, Zaduo County and Yushu County of Qinghai Province, Mili Tibetan Autonomous County, Kangding, Wenchuan, Beichuan, Yajiang and Maerkang County of Sichuan Province, Shangri-La County and Weixi Lisu Autonomous County of Yunnan Province, Diebu County, Wen County, Zhouqu County of Gansu Province, Shennongjia area, Wushan, Badong, Xingshan, Zigui County of Hubei Province and Dianjiang, Liangping, Dazu, Tongnan County of Chongqing City.

Key words: ecosystem, PSDR framework, degradation threat, spatial distribution, upper reaches of the Changjiang River

中图分类号: 

  • P95