[1]邓飞,全占军,于云江.20年来乌兰木伦河流域植被盖度变化及影响因素[J].水土保持研究,2011,18(03):137-140,152.
　DENG Fei,QUAN Zhan-jun,YU Yun-jiang.Study on the Vegetation Coverage Change and Its Impact Factors in Wulanmulun River Basin During the Recent 20 Years[J].Research of Soil and Water Conservation,2011,18(03):137-140,152.
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20年来乌兰木伦河流域植被盖度变化及影响因素

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 18 期数: 2011年03期 页码: 137-140,152 栏目: 出版日期: 2011-06-20
Title:
Study on the Vegetation Coverage Change and Its Impact Factors in Wulanmulun River Basin During the Recent 20 Years
作者:
邓飞1,2, 全占军2, 于云江2
1. 常州大学 环境与安全工程系, 江苏 常州 213164;
2. 中国环境科学研究院, 北京 100012
Author(s):
DENG Fei1,2, QUAN Zhan-jun2, YU Yun-jiang2
1. School of Environment & Safety Engineering, Changzhou University, Changzhou, Jiangsu 213164, China;
2. Chinese Research Academy of Environment Sciences, Beijing 100012, China
关键词:
植被盖度; NDVI; 降水量; 乌兰木伦河
Keywords:
vegetation coverage; NDVI; precipitation; Wulanmulun River
分类号:
X171.4;P901
摘要:
选取乌兰木伦河流域 1986年、2002年和2008年同期（9月）的3景TM遥感影像，基于归一化植被指数NDVI，提取出植被覆盖等级图。通过对3个时期不同植被盖度类型的比较分析，得出如下结论：乌兰木伦河流域植被盖度变化趋势明显，沙地和低盖度植被面积大幅减少（减少了45.21%），中高盖度植被面积大幅增加（增加了1.56倍），植被覆盖情况好转，表现为总体改善，局部恶化。该区出现植被好转的原因主要有两个方面：一是气候因素中的降水，二是人为因素中的退耕还林、还草和荒漠化治理，而这些影响因素中尤其以降水为主导。相关性分析结果表明，该区植被覆盖度与降水之间表现出较高的相关性。另外，煤矿开采对该区植被影响是双重的，总体而言，有利影响大于不利影响。
Abstract:
The grade maps of vegetation coverage were extracted by selecting 3 sceneries of Landsat TM image of 1986,2002 and 2008 during Sep.in Wulanmulun River watershed,based on NDVI and the quantificational model of remote sensing,Through contrasting and analyzing the vegetation coverage of different grades in 3 phases,the results showed that the variable tendency of the vegetation coverage was obvious,despite deterioration in the limited areas,the overall situation was still getting better.The area of sand and low vegetation coverage significantly reduced(reduced by 45.21%),and the area of high vegetation coverage increased significantly(increased by 1.56 times).There would be two main reasons for vegetation improvement:one was climate factor such as precipitation,another was artificial factor such as returning farmland to forests & grasslands and combating desertification.In particular,the most important impact factor should be precipitation.The results of correlation analysis showed that the correlation coefficient between the area of vegetation coverage and precipitation was very high in test area.In addition,the influence of coal mining on vegetation might be twofold.Overall,there are more beneficial effects than negative effects.

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备注/Memo

收稿日期:2010-11-10;改回日期:2011-3-23。
基金项目:中央级公益性科研院所基本科研项目（2009KYYW06）;中央级环保公益项目（200909101）
作者简介:邓飞（1985- ），男，四川绵阳人，硕士研究生，主要从事西部采煤区生态风险方面的研究。E-mail：dengfei827@163.com
通讯作者:于云江（1962- ），男，内蒙古人，博士，研究员，主要从事环境与健康方面的研究。E-mail：yuyj@craes.org.cn

更新日期/Last Update: 1900-01-01