Relationship between Remotely Sensed Vegetation Change and Fracture Zones Induced by the 2008 Wenchuan Earthquake, China

	Relationship between Remotely Sensed Vegetation Change and Fracture Zones Induced by the 2008 Wenchuan Earthquake, China
	Wang, Ling ; Tian, Bingwei ; Masoud, Alaa ; Koike, Katsuaki
刊名	JOURNAL OF EARTH SCIENCE
	2013
卷号	24 期号:2 页码:282-296
关键词	fracture zone vegetation pattern lineament remote sensing geostatistics
ISSN号	1674-487X
通讯作者	Koike, K (reprint author), Kyoto Univ, Grad Sch Engn, Dept Urban Management, Kyoto 6158540, Japan.
产权排序	1
英文摘要	The Wenchuan earthquake triggered cascading disasters of landslides and debris flows that caused severe vegetation damage. Fracture zones can affect geodynamics and spatial pattern of vegetation damage. A segment tracing algorithm method was applied for identifying the regional fracture system through lineament extractions from a shaded digital elevation model with 25 m mesh for southern Wenchuan. Remote sensing and geographic information system techniques were used to analyze the spatiotemporal vegetation pattern. The relationship between vegetation type identified from satellite images and lineament density was used to characterize the distribution patterns of each vegetation type according to fracture zones. Broad-leaved forest, mixed forest, and farmland persist in areas with moderate lineament density. Deciduous broad-leaved and coniferous forest persists in less fractured areas. Shrub and meadow seem to be relatively evenly distributed across all lineament densities. Meadow, farmland, and shrub persist in the fractured areas. Changes of spatial structure and correlation between vegetation patterns before and after the earthquake were examined using semivariogram analysis of normalized difference vegetation indices derived from Landsat enhanced thematic mapper images. The sill values of the semivariograms show that the spatial heterogeneity of vegetation covers increased after the earthquake. Moreover, the anisotropic behaviors of the semivariograms coincide with the vegetation changes due to the strikes of fracture zones.
学科主题	Geology
收录类别	SCI
语种	英语
WOS记录号	WOS:000316973900013
公开日期	2014-11-21
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/24237]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Wang, Ling,Tian, Bingwei,Masoud, Alaa,et al. Relationship between Remotely Sensed Vegetation Change and Fracture Zones Induced by the 2008 Wenchuan Earthquake, China[J]. JOURNAL OF EARTH SCIENCE,2013,24(2):282-296.
APA	Wang, Ling,Tian, Bingwei,Masoud, Alaa,&Koike, Katsuaki.(2013).Relationship between Remotely Sensed Vegetation Change and Fracture Zones Induced by the 2008 Wenchuan Earthquake, China.JOURNAL OF EARTH SCIENCE,24(2),282-296.
MLA	Wang, Ling,et al."Relationship between Remotely Sensed Vegetation Change and Fracture Zones Induced by the 2008 Wenchuan Earthquake, China".JOURNAL OF EARTH SCIENCE 24.2(2013):282-296.