[1]伍剑波,孙强,张泰丽,等.地形起伏度与滑坡发育的相关性——以丽水市滑坡为例[J].华东地质,2022,43(02):235-244.[doi:10.16788/j.hddz.32-1865/P.2022.02.011]
 WU Jianbo,SUN Qiang,ZHANG Taili,et al.Research for the correlation between relief amplitude and landslides:a case study of Lishui City[J].East China Geology,2022,43(02):235-244.[doi:10.16788/j.hddz.32-1865/P.2022.02.011]
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地形起伏度与滑坡发育的相关性——以丽水市滑坡为例()
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《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
43
期数:
2022年02期
页码:
235-244
栏目:
环境地质
出版日期:
2022-06-23

文章信息/Info

Title:
Research for the correlation between relief amplitude and landslides:a case study of Lishui City
作者:
伍剑波 孙强 张泰丽 朱延辉 韩帅 赵阳
中国地质调查局南京地质调查中心, 江苏南京 210016
Author(s):
WU Jianbo SUN Qiang ZHANG Taili ZHU Yanhui HAN Shuai ZHAO Yang
Nanjing Center, China Geological Survey, Nanjing, 210016, Jiangsu, China
关键词:
滑坡地形起伏度均值变点分析法信息量法确定性系数法丽水市
Keywords:
landsliderelief amplitudemean change-point analysisinformation acquisition analysiscertainty factor analysisLishui City
分类号:
P642.22
DOI:
10.16788/j.hddz.32-1865/P.2022.02.011
摘要:
丽水市位于浙西南山区,地形地貌复杂,地势起伏变化大,滑坡灾害发育。以5 m分辨率的DEM为数据源,基于GIS平台的邻域统计分析工具,依次分析了2×2、3×3、4×4、…50×50共49个矩形窗口,发现平均地形起伏度与窗口大小存在显著的正相关,运用均值变点分析法计算出地形起伏度最佳统计单元大小为8 100 m2(窗格18×18)。地形起伏度等间距分成9级,采用信息量法、确定性系数法研究分析了丽水市发育的滑坡灾害与地形起伏度之间的相关性。研究表明,滑坡发育与地形起伏度密切相关,丽水地区小起伏度更利于滑坡灾害发育,滑坡易发地形起伏度为15~60 m,滑坡最易发区间为15~30 m。
Abstract:
Lishui City is located in the southwest mountainous area of Zhejiang Province. With complex topography and large variation of terrain, landslides frequently happen in local. Based on the data obtained from DEM with 5 m resolution, spatial neighborhood analysis was carried out with grids in 49 different sizes (from 2×2, 3×3,4×4, …, 50×50). It was found that there is a significant positive correlation between the average relief amplitude and the analysis grid sizes. Then, mean change-point analysis was adopted to select the best statistical unit (the grid size) and a grade diagram of relief amplitude can be completed in the study area with mesh area of 8 100 m2(the grid of 18×18). This paper divides the relief amplitude into nine levels at equal intervals, and then analyzes the correlation between landslides and relief amplitude by information acquisition analysis and certainty factor analysis.The results reveal a close relation between relief amplitude and landslides occurred in Lishui area, where the small relief amplitude is more conducive to the development of landslides. The relief amplitude ranging from 15~60 m is the landslide-prone region, among which 15~30 m is the most prone extent.

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备注/Memo

备注/Memo:
收稿日期:2021-01-13;改回日期:2021-04-10。
基金项目:中国地质调查局"浙江丽水地区灾害地质调查(编号:DD20190648)"项目资助。
作者简介:伍剑波,1987年生,男,高级工程师,硕士,主要从事地质灾害调查评价工作。Email:jianbowu0724@163.com。
更新日期/Last Update: 1900-01-01