【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。更多还原

【Abstract】 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.更多还原