[1]雷波,焦峰,王志杰,等. 延河流域生态环境脆弱性评价及其特征分析[J].西北林学院学报,2013,28(03):161-167.[doi:10.3969/j.issn.1001-7461.2013.03.31]
　LEI Bo,JIAO Feng,WANG Zhi-jie,et al. Eco-environment Vulnerability Evaluation and Characteristics Analysis in Yanhe River Watershed[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(03):161-167.[doi:10.3969/j.issn.1001-7461.2013.03.31]
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 延河流域生态环境脆弱性评价及其特征分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第28卷
期数:
2013年03期
页码:
161-167
栏目:
出版日期:
2013-05-30

文章信息/Info

Title:
 Eco-environment Vulnerability Evaluation and Characteristics Analysis in Yanhe River Watershed
文章编号:
1001-7461(2013)03-0161-07
作者:
 雷波; 焦峰; 王志杰; 刘源鑫; 朱乐天
 （1.中国科学院 水利部 水土保持研究所，陕西 杨陵 712100；2.西北农林科技大学 水土保持研究所，陕西 杨陵 712100；3.西北农林科技大学 资源环境学院，陕西 杨陵 712100）
Author(s):
 LEI Bo;  JIAO Feng;  WANG Zhi-jie;  LIU Yuan-xin;  ZHU Le-tian
 (1.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources, Yangling,Shaanxi 712100, China; 2.Institute of Soil and Water Conservation,Northwest A&F University,Yangling, Shaanxi 712100,China;3.College of Natural Resources and Environment,Northwest A&F University,Yangling,Shaanxi 712100,China)
关键词:
 ; 延河流域; 生态环境脆弱性; 空间主成分分析; 遥感; 地理信息系统
Keywords:
 ; Yanhe River watershed;  eco-environment vulnerability;  spatial principal component analysis;  remote sensing;  geographical information system
分类号:
S771.8
DOI:
10.3969/j.issn.1001-7461.2013.03.31
文献标志码:
A
摘要:
 以黄土丘陵区延河流域为研究对象，在遥感和GIS技术支持下，应用空间主成分分析方法，综合评价该区生态环境脆弱性，对其生态环境脆弱性特征进行简要分析，以期为延河流域生态环境建设提供决策依据。结果表明，延河流域生态环境整体上以中度脆弱为主，其面积占流域总面积的54.87%，生态系统较不稳定，抗干扰能力较差；微度脆弱最少，仅占7.55%；重度及以上脆弱程度占11.36%；轻度及以下脆弱程度占33.78%。延河流域极度脆弱带主要分布在陕西省靖边县、志丹县西部；重度脆弱带主要分布在安塞县西北部及子长县；中度脆弱带主要分布在安塞县东南部、延川县及宝塔区；轻度脆弱带主要分布在宝塔区东南部及延长县西北部；微度脆弱带主要分布在延长县东南部。延河流域从上游到下游，生态脆弱性程度依次减弱。不同土地利用类型生态脆弱性程度存在很大差异，坡耕地、裸地、荒草地脆弱性程度相对较高。
Abstract:
 Based on the RS and GIS technologies and the method of spatial principal component analysis (SPCA), the integrated assessment of eco-environment vulnerability in Yanhe River watershed of Loess hilly area was studied, and the characteristics of the eco-environment vulnerability were analyzed briefly. The eco-environment vulnerability in Yanhe River watershed was medium overall, accounting for 54.87% of the total area, ecosystem was relatively unstable and had less ability to anti-interference; slight vulnerability accounted the least area, only 7.55%; heavy and above vulnerability accounted for 11.36%; light and below vulnerability accounted for 33.78%. The extremely fragile zones were mainly located in Jingbian County, west of Zhidan County; heavy fragile zones were mainly distributed in the northwest of Ansai County and Zichang County; moderately fragile zones were mainly located in the southeast of Ansai County, Yanchuan County and Baota District; light fragile zones were mainly distributed in the southeastern Baota District and the northwestern Yanchang County; slight fragile zones were mainly distributed in the southeastern Yanchang County. In the whole watershed, eco-environment vulnerability decreased from upstream to downstream. The eco-environment vulnerability levels among different land use types were significantly different, slope farmland, bare land and grassland had relatively higher vulnerability level. The results of the research may provide decision basis for environment construction of Yanhe River watershed.

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备注/Memo

备注/Memo:
 收稿日期：2012-11-25  修回日期：2013-01-19
基金项目：国家自然科学基金（41271043）；中科院知识创新重要方向项目（KZCX2-EW-406）；中国科学院重点部署项目（KZZD-EW-04-03）；西北农林科技大学科技创新重点项目（QN2011073）。
作者简介：雷波，男，在读硕士,研究方向：遥感与GIS应用及资源环境信息技术。 E-mail：lb.leibo@163.com
*通信作者：焦峰，男，博士，副研究员,研究方向：GIS应用、水土保持与环境效应监测评价。E-mail：Jiaof11@126.com
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