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Chinese Journal of Applied Ecology ›› 2016, Vol. 27 ›› Issue (11): 3479-3486.doi: 10.13287/j.1001-9332.201611.011

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Spatial-temporal process and characteristics of vegetation recovery after Wenchuan earthquake: A case study in Longxi River basin of Dujiangyan, China.

LI Jing-zhong1,2,3, CAO Ming-ming1, QIU Hai-jun1, XUE Bing3, HU Sheng1, CUI Peng4*   

  1. 1 College of Urban and Environmental Science, Northwest University, Xi’an 710127, China;
    2 College of Urban Planning and Landscape Garden, Xuchang University, Xuchang 461000, Henan, China;
    3 Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    4Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
  • Received:2016-04-01 Online:2016-11-18 Published:2016-11-18
  • Contact: E-mail: pengcui@imde.ac.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (41471116, 41401602), the Sichuan Science and Technology Project (2014SZ0163) and the Natural Science Basic Research Plan in Shaanxi Province of China (2014JQ2-4021).

Abstract: Quantitative evaluation on the vegetation recovery after the earthquake is of great scienti-fic significance for local ecological system rebuilding and regional social-economic sustainable deve-lopment. By taking the Longxi River Basin in Dujiangyan of Sichuan Province as an example, and employing the MODIS-NDVI time-series data, this paper illustrated the dynamic changes of the ve-getation cover rates in Longxi River basin before and after the “5.12” Wenchuan Earthquake by using Landsat data, and then time-space characters of the recovery rates of the damaged vegetation was quantified structurally by referring the factors of river-system and terrain. The results showed that the recovery of impaired vegetation coverage worked well from a holistic point of view, but the response of vegetation coverage to earthquake disaster showed a lagging-phenomenon. The recovery rate of damaged vegetation was significantly correlated to its distance to surrounding river systems, elevation, slope degree, and slope aspect. This finding could provide technical supports for decision-makers to intervene the recovering process after earthquake.