[1]姚昆,周兵,李小菊,等.基于AHP-PCA熵权模型的大渡河流域中上游地区生态环境脆弱性评价[J].水土保持研究,2019,26(05):265-271.
　YAO Kun,ZHOU Bing,LI Xiaoju,et al.Evaluation of Ecological Environment Vulnerability in the Upper-Middle Reaches of Dadu River Basin Based on AHP-PCA Entropy Weight Model[J].Research of Soil and Water Conservation,2019,26(05):265-271.
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基于AHP-PCA熵权模型的大渡河流域中上游地区生态环境脆弱性评价

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 26 期数: 2019年05期 页码: 265-271 栏目: 出版日期: 2019-09-06
Title:
Evaluation of Ecological Environment Vulnerability in the Upper-Middle Reaches of Dadu River Basin Based on AHP-PCA Entropy Weight Model
作者:
姚昆1, 周兵2, 李小菊1, 何磊3, 李玉霞4
1. 西昌学院 资源与环境学院, 四川 西昌 615000;
2. 国家气候中心 气候服务室, 北京 100081;
3. 成都信息工程大学 软件工程学院, 成都 610103;
4. 电子科技大学 自动化工程学院, 成都 610054
Author(s):
YAO Kun1, ZHOU Bing2, LI Xiaoju1, HE Lei3, LI Yuxia4
1. College of Resources and Environment, Xichang University, Xichang, Sichuan 615000, China;
2. National Climate Center, Climate Service Office, Haidian District, Beijing 100081, China;
3. School of Software Engineering, Chengdu University of Information Technology, Chengdu 610103, China;
4. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
关键词:
生态环境脆弱性; 时空分异特征; GIS; 大渡河流域
Keywords:
environment vulnerability; characteristics of spatial-temporal differentiation; GIS; Dadu River Basin
分类号:
X826
摘要:
大渡河流域中上游地区是长江上游重要的生态屏障和功能区，及时掌握其生态环境脆弱性真实状况，有助于实现区域生态环境的保护。研究从地形、气候、植被等方面选择9个指标，同时将GIS技术与AHP-PCA熵组合权重模型相结合，完成了大渡河中上游地区2000—2015年不同时期的生态环境脆弱性评价与分析。结果表明：（1）研究区生态环境脆弱性呈现出明显的垂直梯度变化，由南向北脆弱度逐渐降低。（2）将脆弱性指数分5个等级，各等级间面积比例差异明显，表现为微度 > 轻度 > 潜在 > 中度 > 重度，轻度及以下脆弱区面积比例达到全区的80%以上，其整体处于中等脆弱水平。（3）研究时期内该地区各时段的生态环境脆弱性综合指数分别为2.552 1，2.541 0，2.517 0，2.494 9，其整体呈现明显好转的发展趋势。（4）流域中上游地区生态环境的好转，主要得益于国家系列生态环境保护与重建工程的实施，同时水电资源的大量开发也对其脆弱性的加剧产生一定影响。（5）研究针对该地区生态环境恢复重建，结合区域实际将其分为3个治理区并分别提出相应建议。
Abstract:
The middle-upper reaches of the Dadu River Basin are important ecological barriers and functional areas in the upper reaches of the Yangtze River, and it is helpful to realize the protection of regional ecological environment to grasp the real situation of its ecological environment vulnerability in time. We select nine indexes from topography, climate, vegetation and so on, and combine GIS technology and AHP-PCA entropy combination weight model to complete the evaluation and analysis of ecological environment vulnerability in the study area in different period 2000-2015. The following results are obtained. (1) The vulnerability of ecological environment in watershed area shows obvious vertical gradient change, and the vulnerability of south to north gradually decreases. (2) In the study, the vulnerability index can be divided into five grades, the difference of the area between the different grades are obvious, the degree of mild and the potential to moderate, and the area of light and following vulnerable areas reach up to more than 80% of the whole region, which is at the level of the medium vulnerability. (2) During the study period, the comprehensive indexes of ecological environment vulnerability in different periods were 2.552 1, 2.541 0, 2.517 0 and 2.494 9, respectively, and the overall development trend of the region showed the obvious improvement. (4) The improvement of ecological environment in the middle and upper reaches of the basin was mainly due to the implementation of the national series of ecological environmental protection and reconstruction projects, and the extensive development of hydropower resources also had a certain impact on the intensification of its vulnerability. (5) Finally, the study aims at the restoration and reconstruction of ecological environment in this area, the area can be divided into 3 harnessing regions in terms of the situation of the area, and corresponding suggestions on each harnessing region are put forward.

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备注/Memo

收稿日期:2018-10-26;改回日期:2018-12-20。
基金项目:全球变化研究国家重大科学研究计划项目（2015CB953904）；四川省科技厅重点研发项（No.2018SZ0286）；广东省自然科学资助项目（NO.2018A030313898）；成信大人才引进项目（No.KYTZ201809）；四川省大学生创新创业训练计划项目（201810628034）
作者简介:姚昆(1991-),男,四川西昌人,硕士,助教,主要研究方向为生态遥感。E-mail:jiangshan996@126.com
通讯作者:周兵(1964-),男,江苏常熟人,研究员,博士,主要研究方向为气候变化监测,亚洲季风降水。E-mail:bingz@cma.gov.cn

更新日期/Last Update: 1900-01-01