[1]司渤洋,第宝锋,张斌,等.基于GIS的汶川地震灾区小流域土壤侵蚀评价——以彭州龙门山区为例[J].山地学报,2011,(04):433.
　SI Boyang,DI Baofeng,ZHANG Bin,et al.Evaluation of Soil Erosion Based on GIS in a Small Watershed in Wenchuan Seismic Disaster Area——A Case Study of Longmen Mountain Areas in Pengzhou City[J].Mountain Research,2011,(04):433.
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基于GIS的汶川地震灾区小流域土壤侵蚀评价——以彭州龙门山区为例()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2011年04期
页码:
433
栏目:
山地学报
出版日期:
2011-01-01

文章信息/Info

Title:
Evaluation of Soil Erosion Based on GIS in a Small Watershed in Wenchuan Seismic Disaster Area——A Case Study of Longmen Mountain Areas in Pengzhou City
作者:
司渤洋;第宝锋;张斌;余波;
1. 四川大学建筑与环境学院，四川 成都 610065；
2.西华师范大学国土资源学院，四川 南充637002
Author(s):
SI Boyang;  DI Baofeng;  ZHANG Bin;  YU Bo
1.College of Architecture & Environment, Sichuan University, Chengdu 610065，China； 　　
2.Land and Resources College, China West Normal University, Nanchang 637002，China
关键词:
GIS; 汶川大地震; 小流域; 土壤侵蚀; 侵蚀严重性指数
Keywords:
Geographical Information System(GIS);  Wenchuan earthquake;  small watershed;  soil erosion;  index of soil erosion severity (ISES)
分类号:
S157
文献标志码:
A
摘要:
汶川大地震对龙门山区造成了严重破坏。地震引发的次生山地灾害以及剧烈的土壤侵蚀仍将长期持续地影响着当地居民的生产与生活。对地震前后小流域的土壤侵蚀严重性进行评价并分析其变化,将对灾后小流域水土保持综合治理及生态恢复与重建工作具有重要的指导意义。基于GIS技术,以四川省彭州市龙门山区为研究区,以小流域作为基本单元,针对研究区地震灾区小流域土壤侵蚀,构建侵蚀严重性指数评价及分级方法,对地震前后土壤侵蚀严重性及变化特征并进行评价与分析。结果表明,地震后绝大部分小流域的土壤侵蚀趋重。震后土壤侵蚀程度不严重、较严重的小流域数量别由震前8个及21个降至5个及8个,新增严重、极严重小流域分别为12个及4个,相...
Abstract:
The 8.0Ms Wenchuan Earthquake has caused severe damage to the Longmen mountain areas. Serious secondary disasters and soil erosion induced by the earthquake would constant influence on the life and production of the local people. It is of great significance to evaluate soil erosion in a small watershed for postearthquake reconstruction and Soil and Water Conservation. Taking the Longmen mountain areas as an example, the study area was divided into 29 small watersheds by GIS technology. The evaluation model and grading method of Index of soil erosion severity (ISES) was determined by the overlay tools of GIS. We conducted the evaluation of the severity of soil erosion and analysis of the variation characteristics of soil erosion in every small watershed before and after the earthquake. The results indicated that soil erosion in all the small watersheds had worsened. The number of small watersheds moderately eroded decreased from 8 to 5, and severely eroded decreased from 21 to 8. 12 newly moderately eroded and 4 newly severely eroded small watersheds were increased, with the covered area were 183.76 km2 and 52.70 km2 respectively. The distribution of soil erosion severity decreases from westnorth to southeast. The average altitude and average gradient showed positive correlation to ISES in small watersheds before and after the earthquake, furthermore, the average gradient contributed to the change of ISES more.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2011-07-02；改回日期(Accepted) : 2011-07-7。
基金项目（Foundation item）：中国科学院山地灾害与地表过程重点实验室开放资金项目（LF08006）；国家重点基础研究发展计划（973）项目（2008CB425803）。\[Supported by National 973 program (Grant No.2008CB425803) and Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences(Grant No.LF08006)in China.\]
作者简介（Biography）：司渤洋（1988-），男，北京人，大学本科，研究方向为GIS。\[Si Boyang(1988-),male, born in Beijing, Bachelor Degree. Major in GIS.\] E-mail: espie.uni@gmail.com *
通讯作者(Corresponding author)：第宝锋（1978-），男，博士，副教授，研究方向为GIS及山地环境。\[Di Baofeng(1978-),male, h.D. \]E-mail:diwubf@gmail.com
更新日期/Last Update: 1900-01-01