| 5.12汶川地震对都汶公路(G213)沿线土地破坏及损失评价 |
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| 引用本文： | 庄建琦,葛永刚.5.12汶川地震对都汶公路(G213)沿线土地破坏及损失评价[J].地质科技情报,2009,28(2). |
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| 作者姓名： | 庄建琦 葛永刚 |
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| 作者单位： | 中国科学院山地灾害与地表过程重点实验室,成都,610041;中国科学院成都山地灾害与环境研究所,成都,610041;中国科学院研究生院,北京,100049 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金，西部交通建设科技项目 |
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| 摘 要： | 5.12汶川地震及其次生山地灾害对灾区的土地资源造成了严重破坏,损失巨大.以重灾区都汶公路沿线为研究对象,通过野外实际调查,利用遥感影像解译和土地利用资料,探讨了地震引起的崩塌、滑坡等次生山地灾害对土地利用的破坏方式和特征,次生山地灾害以移动破坏、淤埋破坏和拉裂破坏3种形式破坏土地资源,并对土地利用损失进行了评估.结果表明:①各种土地利用类型中,淤埋破坏是最主要的破坏形式,占总破坏面积的77.23%,移动破坏面积占总破坏面积的22.77%;②林地和草地破坏呈现出在缓坡地带和陡坡地带破坏比例高,在中间地带破坏比例低的规律,旱地破坏具有随着坡度的增大而加剧的趋势;③研究区内各类土地利用类型总损失价值达76 577.26万元,其中林地损失量最大,占总损失价值的87.18%,是地震引起崩塌、滑坡灾害损失的主要对象.
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| 关 键 词： | 5.12汶川地震 土地利用 破坏方式 破坏特征 损失评价 |
Land Destruction by 5.12 Wenchuan Earthquake along Dujiangyan-Wenchuan Highway and Its Loss Evaluation |
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| ZHUANG Jian-qi,GE Yong-gang.Land Destruction by 5.12 Wenchuan Earthquake along Dujiangyan-Wenchuan Highway and Its Loss Evaluation[J].Geological Science and Technology Information,2009,28(2). |
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| Authors: | ZHUANG Jian-qi GE Yong-gang |
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| Institution: | 1a.Key Laboratory of Mountain Hazards and Land Surface Processes;1b.Institute of Mountain Hazards and Environment;CAS;Chengdu 610041;China;2.Graduate School;Beijing 100049;China |
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| Abstract: | The land resource of seismic disastrous area was seriously damaged by 5.12 Wenchuan Earthquake,which induced geo-hazards,including collapse,landslide,debris flow,ground cranny,geo-hazard dam lake and so on.This paper discusses the damage patterns and characteristics of different landuse types in the areas along Dujiangyan-Wenchuan Highway and evaluates their losses based on field investigation and remote sensing image analysis.This work demonstrates that geo-hazards have demolished land resources by movemen... |
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| Keywords: | 5 12 Wenchuan Earthquake land utilization damaged form damaged characteristics loss evaluation |
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