[1]陈晓清,李智广,崔鹏,等.5·12汶川地震重灾区水土流失初步估算[J].山地学报,2009,(01):122.
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5·12汶川地震重灾区水土流失初步估算()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2009年01期
页码:
122
栏目:
山地学报
出版日期:
2009-01-15

文章信息/Info

作者:
陈晓清;李智广;崔鹏;刘宪春;
中国科学院山地灾害与地表过程重点实验室;中国科学院水利部成都山地灾害与环境研究所;水利部水土保持监测中心;
关键词:
汶川地震; 水土流失; 崩塌; 滑坡; 堰塞湖; 估算
文献标志码:
A
摘要:
5·12汶川地震诱发大量的崩塌、滑坡、堰塞湖,导致了大量的水土流失。基于北京一号小卫星影像数据,在重灾区共解译出崩塌、滑坡点总面积2264.53km2。通过对重灾区内距离地震破裂带分别做5km、10km、30km、50km、100km的缓冲区,分别统计不同区段的崩塌、滑坡体的面积,结合野外实地考察和简易测量数据来确定不同区段的松散土体厚度,初步计算出重灾区的崩塌、滑坡水土流失量为相当于全国一年的水土流失量。通过对重灾区34处重点堰塞湖的堰塞坝堆积方量进行计算,估算所有堰塞湖的堰塞坝水土流失量为1.87×108t。重灾区山地灾害的水土流失总量为55.86×108t。讨论估算中存在的问题,提出了进...

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更新日期/Last Update: 2009-01-15