“5·12”汶川特大地震灾害造成四川森林资源损失的评估研究
|
摘要
应用遥感技术、全球定位技术与地理信息系统,结合各类林业专题图及相关资料分析,研究"5.12"汶川特大地震灾害造成的四川森林资源损失情况。结果表明,重灾区受损林地面积共计32.87万hm2,导致该区域森林覆盖率下降1.87%,受灾活立木蓄积量1 958.25万m3,31个自然保护区不同程度受灾,其中以大熊猫为主要保护对象的自然保护区28个,占受灾保护区总数的71.00%,地震造成区域生态景观破碎化程度显著,系统斑块数量为震前的1.7倍,可能产生的孤岛效应,将使大熊猫等濒危动植物的濒危程度加剧;地震造成森林资源损毁的直接经济损失共达122.7亿元。该研究为灾后四川省森林植被恢复重建提供了重要依据。
By applying remote sensing,global positioning technology and geographic information systems,and considering the various types of thematic maps and related forestry data analysis,the Sichuan forest resources losses caused by "5.12" Wenchuan earthquake disasters are studied in this paper.Results suggest that the total damaged forestland in heavy disaster-stricken area is 328.7 thousands hm2,which result in 1.87% reduction of forest coverage in the region and 19 582.5 thousands m3 of affected alive stumpage.31 nature reserves are damaged to various degrees,among with 28 natural reserves are protecting panda,covering 71.00% of the total disaster stricken protection areas.The regional ecological landscape fragmentation caused by earthquake is significant,which is 1.7 times before the earthquake of the the numer of pathes to the system.It might results in island effects,which intensify the endangerment of animals and plants of panda.The total direct economic damage of forest resources caused by earthquake reach 12.27 billion yuan.This study supplies important accordance for the restoration of forest vegetation of Sichuan Province after the earthquake.
By applying remote sensing,global positioning technology and geographic information systems,and considering the various types of thematic maps and related forestry data analysis,the Sichuan forest resources losses caused by "5.12" Wenchuan earthquake disasters are studied in this paper.Results suggest that the total damaged forestland in heavy disaster-stricken area is 328.7 thousands hm2,which result in 1.87% reduction of forest coverage in the region and 19 582.5 thousands m3 of affected alive stumpage.31 nature reserves are damaged to various degrees,among with 28 natural reserves are protecting panda,covering 71.00% of the total disaster stricken protection areas.The regional ecological landscape fragmentation caused by earthquake is significant,which is 1.7 times before the earthquake of the the numer of pathes to the system.It might results in island effects,which intensify the endangerment of animals and plants of panda.The total direct economic damage of forest resources caused by earthquake reach 12.27 billion yuan.This study supplies important accordance for the restoration of forest vegetation of Sichuan Province after the earthquake.
引文
[1]韩东银,魏英祖.生态系统地震灾害及其深层机制[J].国际地震动态,2007(1):16-24.
[2]张德成,李智勇,牛丽君.台湾9.21地震后林业重建的经验及借鉴意义[J].林业经济问题,2008,28(4):287-291.
[3]罗江宾.森林资源资产评估[M].北京:中国林业出版社,2002.
[4]吕杰堂,王治华,周成虎.西藏易贡滑坡堰塞湖的卫星遥感检测方法初探[J].地理学报,2002,23(4):363-368.
[5]钟耳顺.地理信息系统应用与社会背景分析[J].地理研究,1995,14(2):91-96.
[6]张春敏,王根绪.不同地震烈度对灾区景观生态破坏程度的评价[J].生态学报,2008,28(12):5938-5947.
[7]张信宝.有关汶川地震及次生山地灾害研究的一些科学问题[J].山地学报,2008,26(4):402-403.
[2]张德成,李智勇,牛丽君.台湾9.21地震后林业重建的经验及借鉴意义[J].林业经济问题,2008,28(4):287-291.
[3]罗江宾.森林资源资产评估[M].北京:中国林业出版社,2002.
[4]吕杰堂,王治华,周成虎.西藏易贡滑坡堰塞湖的卫星遥感检测方法初探[J].地理学报,2002,23(4):363-368.
[5]钟耳顺.地理信息系统应用与社会背景分析[J].地理研究,1995,14(2):91-96.
[6]张春敏,王根绪.不同地震烈度对灾区景观生态破坏程度的评价[J].生态学报,2008,28(12):5938-5947.
[7]张信宝.有关汶川地震及次生山地灾害研究的一些科学问题[J].山地学报,2008,26(4):402-403.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心