Monitoring vegetation recovery after China's May 2008 Wenchuan earthquake using Landsat TM time-series data: a case study in Mao County

	Monitoring vegetation recovery after China's May 2008 Wenchuan earthquake using Landsat TM time-series data: a case study in Mao County
	Lu, Tao ; Zeng, Hongcheng ; Luo, Yan ; Wang, Qian ; Shi, Fusun ; Sun, Geng ; Wu, Yan ; Wu, Ning
刊名	ECOLOGICAL RESEARCH
	2012
卷号	27 期号:5 页码:955-966
关键词	Wenchuan earthquake Vegetation damage Vegetation recovery Landsat image
ISSN号	0912-3814
通讯作者	Wu, N (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Chengdu 610041, Peoples R China.
产权排序	1
英文摘要	The Wenchuan earthquake (Richter scale 8) on 12 May 2008 in southwestern China caused widespread ecosystem damage in the Longmenshan area. It is important to evaluate natural vegetation recovery processes and provide basic information on ecological aspects of the recovering environment after the earthquake. To circumvent the weather limits of remote sensing in the Wenchuan earthquake-hit areas, and to meet the need for regional observation analyses, three Landsat TM images pre- and post-earthquake in Mao County were used for analysis. Post-earthquake normalized difference vegetation index (NDVI) values were compared to pre-earthquake values with an NDVI-based index differencing method to determine the extent to which the vegetation was damaged in relation to the pre-earthquake pattern, and the rate of recovery was evaluated. The spatial characteristics of vegetation loss and natural recovery patterns were analyzed in relation to elevation, slope and aspect. The results indicated that severely damaged sites occurred mainly in river valleys, within a range of 1,500-2,500 m elevation and on slopes of 25-55A degrees. The distance from rivers, rather than the distance from active faults, controls the damage patterns. After 1 year of natural regeneration, 36 % of the destroyed areas showed a decrease in NDVI value, 28.8 % showed very little change, 19.1 % showed an increase, and 16.1 % also increased with a recovery rate greater than 100 %. Moreover, there is a good correlation between recovery rate and both slope and elevation, but recovery patterns in the damaged area are complicated. Our results indicate that natural recovery in this arid valley is a slow process.
学科主题	Environmental Sciences & Ecology
收录类别	SCI
资助信息	Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-YW-Z-0959, KSCX2-EW-J-22]; National Natural Science Foundation of China [30900214]
语种	英语
WOS记录号	WOS:000308951600015
公开日期	2013-07-03
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/23813]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Lu, Tao,Zeng, Hongcheng,Luo, Yan,et al. Monitoring vegetation recovery after China's May 2008 Wenchuan earthquake using Landsat TM time-series data: a case study in Mao County[J]. ECOLOGICAL RESEARCH,2012,27(5):955-966.
APA	Lu, Tao.,Zeng, Hongcheng.,Luo, Yan.,Wang, Qian.,Shi, Fusun.,...&Wu, Ning.(2012).Monitoring vegetation recovery after China's May 2008 Wenchuan earthquake using Landsat TM time-series data: a case study in Mao County.ECOLOGICAL RESEARCH,27(5),955-966.
MLA	Lu, Tao,et al."Monitoring vegetation recovery after China's May 2008 Wenchuan earthquake using Landsat TM time-series data: a case study in Mao County".ECOLOGICAL RESEARCH 27.5(2012):955-966.