干旱区生态环境知识资源中心(Arid): 20年来乌兰木伦河流域植被盖度变化及影响因素

Arid

	20年来乌兰木伦河流域植被盖度变化及影响因素
其他题名	Study on the Vegetation Coverage Change and Its Impact Factors in Wulanmulun River Basin During the Recent 20 Years
	邓飞 1; 全占军 2; 于云江 2
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2011
卷号	18 期号:3 页码:137-140,152
中文摘要	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ND-VI，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。
英文摘要	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 sig nificantly (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 precipita tion.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.
中文关键词	植被盖度 ; 降水量 ; 乌兰木伦河
英文关键词	NDVI vegetation coverage NDVI precipitation Wulanmulun River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES ; GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Environmental Sciences & Ecology ; Geology
CSCD记录号	CSCD:4221592
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227108
作者单位	1.常州大学环境与安全工程系, 常州, 江苏 213164, 中国; 2.中国环境科学研究院, 北京 100012, 中国
推荐引用方式 GB/T 7714	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],2011,18(3):137-140,152.
APA	邓飞,全占军,&于云江.(2011).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,18(3),137-140,152.
MLA	邓飞,et al."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 18.3(2011):137-140,152.