論文

査読有り
2013年4月

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

JOURNAL OF EARTH SCIENCE
  • Ling Wang
  • ,
  • Bingwei Tian
  • ,
  • Alaa Masoud
  • ,
  • Katsuaki Koike

24
2
開始ページ
282
終了ページ
296
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1007/s12583-013-0329-y
出版者・発行元
CHINA UNIV GEOSCIENCES

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.

リンク情報
DOI
https://doi.org/10.1007/s12583-013-0329-y
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000316973900013&DestApp=WOS_CPL
ID情報
  • DOI : 10.1007/s12583-013-0329-y
  • ISSN : 1674-487X
  • eISSN : 1867-111X
  • Web of Science ID : WOS:000316973900013

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