Risks of Secondary Disasters and Its Impact on Nature Reserves and Natural Heritages in Jiuzhaigou Earthquake Area

Li Xiaoyong; Du Guoming; Kuang Wenhui

doi:10.13961/j.cnki.stbctb.2019.02.047

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Risks of Secondary Disasters and Its Impact on Nature Reserves and Natural Heritages in Jiuzhaigou Earthquake Area

- Risks of Secondary Disasters and Its Impact on Nature Reserves and Natural Heritages in Jiuzhaigou Earthquake Area
- Bulletin of Soiland Water Conservation Vol. 39, Issue 2, Pages: 301-308(2019)
- 作者机构：
  
  1. 中国科学院地理科学与资源研究所,北京,100101
  2. 中国科学院大学,北京,100049
  3. 东北农业大学资源与环境学院,黑龙江,哈尔滨,150030
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2019.02.047
  CLC： X43
- Published：2019
- 稿件说明：
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Li Xiaoyong, Du Guoming, Kuang Wenhui. Risks of Secondary Disasters and Its Impact on Nature Reserves and Natural Heritages in Jiuzhaigou Earthquake Area[J]. Bulletin of Soiland Water Conservation, 2019, 39(2): 301-308.
DOI：

Li Xiaoyong, Du Guoming, Kuang Wenhui. Risks of Secondary Disasters and Its Impact on Nature Reserves and Natural Heritages in Jiuzhaigou Earthquake Area[J]. Bulletin of Soiland Water Conservation, 2019, 39(2): 301-308. DOI： 10.13961/j.cnki.stbctb.2019.02.047.

摘要

[目的]对四川省九寨沟地震次生灾害及其对自然保护区和自然遗产地的影响进行评估，为灾区生态环境恢复重建规划的制定提供科学参考。[方法]基于土地利用、地形、植被覆盖、自然保护区和自然遗产地分布等数据，分析九寨沟地震区域的自然生态环境状况，评估震区的次生灾害风险等级，重点分析自然保护区与遗产地内的次生灾害风险状况。[结果]灾区地震烈度较高的地区主要位于海拔3 000 m以上的区域，土地利用类型以林地和草地为主，平均植被覆盖度达到58%；次生灾害高风险区面积占30%左右，主要分布在距断裂带较近和坡度较陡的区域；中部和南部的自然保护区处于次生灾害高风险区，西部及北部则处于低风险区；自然遗产地主要分布在极高风险区，增加了景区和自然遗产地的生态风险。[结论]地震使九寨沟自然遗产地、林草植被和动物栖息地遭受不同程度破坏，对九寨沟景区旅游业造成严重影响。建议对九寨沟旅游景区和世界自然遗产地实施优先恢复重建，并加强生态保护和风险防范力度。

Abstract

[Obejective] The risks of secondary disasters and its impact on nature reserves and natural heritages in Jiuzhaigou earthquake area were studied in order to provide references for post-disaster recovery and reconstruction planning

as well as for nature reserves and natural heritages protection.[Methods] Based on land use data

DEM data

vegetation cover and natural protected area and heritage data

the spatial characteristics of ecological environment in Jiuzhaigou earthquake area were analyzed and the risk level of secondary disasters was assessed. Then

the risks of secondary disasters in nature reserves and natural heritage in earthquake area was assessed.[Results] The high earthquake intensity area was mainly located in the areas over 3 000 m altitude

where the land use was dominated by forest and grassland

and the mean vegetation coverage was up to 58%. The total area of high-risk zone accounted for about 30% of the study area

which mainly near to the fault zone and steeper slope zone. Nature reserves located in the central and south of the area

and most natural heritages located in high-risk zone

while the west and north regions were low-risk zone. To some extent

the secondary disasters aggravated the ecological risk of Jiuzhaigou scenic area and natural heritage.[Conclusion] The natural heritage areas

forest and grass and animal habitats were damaged by the earthquake with varying degrees

which had a serious impact on tourism in Jiuzhaigou scenic area. Therefore

Jiuzhaigou scenic area and Jiuzhaigou natural heritage should be the priority areas of restoration and reconstruction

and strengthen ecological protection and risk prevention.

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