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FOREST RESOURCES WANAGEMENT ›› 2020›› Issue (2): 154-160.doi: 10.13466/j.cnki.lyzygl.2020.02.023

• Scientific Research • Previous Articles     Next Articles

An Assessment of Forest Ecosystem Loss and Restoration in the Severely Affected Areas of Wenchuan Earthquake

ZHU Jiatong(), LIU Kai(), WANG Ming, LIANG Xin   

  1. 1. State Key Laboratory of Earth Surface Processes and Resources Ecology,Beijing Normal University,Beijing 100875
    2. Academy of Disaster Reduction and Emergency Management,Faculty of Geographical Science,Beijing Normal University,Beijing 100875
  • Received:2020-01-08 Revised:2020-04-20 Online:2020-04-28 Published:2020-06-15
  • Contact: LIU Kai E-mail:201921051202@mail.bnu.edu.cn;liukai@bnu.edu.cn

Abstract:

The 2008 Wenchuan M 8.0 earthquake has caused great damage to the local ecosystem.Based on satellite imagery from 2008 to 2018 and forest spatial distribution,this study assesses forest ecosystem services restoration in Hongxi River watershed in Pingwu county which was seriously hit by earthquake.The results show that Wenchuan earthquake has caused serious damage to the ecological environment of the study area and the economic value loss of forest ecosystem services reached 181 million Yuan in 2008.With the forest restoration over the past 10 years,the forest restoration generally shows a positive trend except for 2018 when larger losses were caused by extreme precipitation.The annual economic value loss of forest ecosystem services will remain around 50 to 60 million Yuan without human intervention.The overall economic value loss of forest ecosystem services over past 10 years is 12.44 billion Yuan with an annual average loss of 1.13 billion Yuan,in which the economic value of soil conservation and carbon fixation and oxygen production account for 75.9% in total.The restoration of forest ecosystem still needs long-term and systematic efforts.

Key words: Wenchuan earthquake, forest ecosystems, economic value loss of forest ecosystem services, ecological restoration, Hongxi River Basin in Pingwu county

CLC Number: