水土保持研究2011，Vol.18Issue(3)：198-200,封3,4.
汶川地震极重灾区土地损毁研究
Study on Damaged Land in Heavy Disaster Area of Wenchuan Earthquake
摘要
Abstract
The land in disaster area was damaged by Wenchuan earthquake. Study on the damaged land can indirectly reveal the earthquake destroy model. Based on multi-source information of disaster area, the land use types and distribution pattern before and after the earthquake based on remote sensing technology can be acquisited. The damaged land and its spatial characteristics were detected based on geographic information system technology. Study shows that the damaged land distributed along the oval seismic belt, and it has positive relationship with the distribution of faults. Landform transition zone with slope of 5°～35° covered 71.23％ of the damaged land.Elevation of 1 000～2 000 m areas distributed 31.89％ of the total damaged land. Types of damaged land were various. While elevation of 2 000～3 000 m areas distributed 34.59％ of the total damaged land, and types of damaged land were single. Results show that the spatial structure of damaged land coincieded with the surface failure mechanism by earthquake. Information of damaged land can be used as the important clues for ecological environmental evaluation, recovery and reconstrucion after the earthquake.关键词
土地损毁/极重灾区/"3S"技术/汶川地震Key words
disaster land/ severely damaged area/ 3S technology/ Wenchuan Earthquake分类
天文与地球科学引用本文复制引用
倪忠云,何政伟,赵银兵,王乐,高慧,蔡柯柯..汶川地震极重灾区土地损毁研究[J].水土保持研究,2011,18(3):198-200,封3,4.基金项目
国家863重点项目(007AA120306) （007AA120306）
国家自然科学基金(40972225) （40972225）
