Ecosystem Health Assessment of Central Ctansu Loess Plateau Based on 3S -- A Case Study of Yuzhong County, Ctansu Province

HUANG Hui-ping; ZHANG Cen; HAN Yu-ping

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Ecosystem Health Assessment of Central Ctansu Loess Plateau Based on 3S -- A Case Study of Yuzhong County, Ctansu Province

- Ecosystem Health Assessment of Central Ctansu Loess Plateau Based on 3S -- A Case Study of Yuzhong County, Ctansu Province
- Bulletin of Soiland Water Conservation Vol. 28, Issue 4, Pages: 205-208(2009)
- 作者机构：
  
  1. 华北水利水电学院资源与环境学院,河南,郑州,450011
  2. 深圳平岗中学,广东,深圳,518116
  3. 陕西师范大学旅游与环境学院,陕西,西安,710062
- 作者简介：
- 基金信息：
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- Published：2009
- 稿件说明：
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HUANG Hui-ping, ZHANG Cen, HAN Yu-ping. Ecosystem Health Assessment of Central Ctansu Loess Plateau Based on 3S -- A Case Study of Yuzhong County, Ctansu Province[J]. Bulletin of Soiland Water Conservation, 2009, 28(4): 205-208.
DOI：

HUANG Hui-ping, ZHANG Cen, HAN Yu-ping. Ecosystem Health Assessment of Central Ctansu Loess Plateau Based on 3S -- A Case Study of Yuzhong County, Ctansu Province[J]. Bulletin of Soiland Water Conservation, 2009, 28(4): 205-208. DOI：

摘要

利用遥感影像、DEM和调查数据，在野外调查的基础上，利用3S技术，生成各参评因子的专题栅格图层。运用层次分析法，从影响生态系统健康的自然和人文因子的角度出发，选择活力、组织结构、负荷能力、恢复力、生态系统功能维持、外部投入及人群健康状况作为研究区生态系统健康评价的7个要素，构建生态系统健康评价指标体系。健康等级划分为:很健康、健康、中度健康、一般病态和疾病5级。研究结果表明，该县生态系统健康状况处于中等偏下水平，一般病态面积占到45%∼50%，而且从1991年-2002年-2006年病态面积逐年增加，健康面积逐步缩小，反映出榆中县2006年生态系统健康状况较2002年和1991年有所下降。

Abstract

By taking the Yuzhong area as an example

thematic raster layers of each evaluation factor are established based on DEM

survey data

remote sensing images

and 3S technologies.From the humanistic and natural point of view

vigor

organization

load

resilience

ecosystems maintenance

external input

and human health are chosen as the assessing elements based on the method of AHP.T he assessing result is classified into five classes: very healthy state

healthy state

sub healthy state

nor-healthy state

and morbidity state. In the end

the following conclusion is drawn: the area of nor-healthy state makes up 40>-50> of Yuzhong County

which indicates that the ecosystem healthy state declined from 1991 to 2006.

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