Forest and Grassland Resources Research >
An Assessment of Forest Ecosystem Loss and Restoration in the Severely Affected Areas of Wenchuan Earthquake
Received date: 2020-01-08
Revised date: 2020-04-20
Online published: 2020-06-15
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.
Jiatong ZHU , Kai LIU , Ming WANG , Xin LIANG . An Assessment of Forest Ecosystem Loss and Restoration in the Severely Affected Areas of Wenchuan Earthquake[J]. Forest and Grassland Resources Research, 2020 , 0(2) : 154 -160 . DOI: 10.13466/j.cnki.lyzygl.2020.02.023
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