基于地学信息图谱的科西河流域滑坡空间分异研究  

Landslide spatial differentiation based on Geo-Informatic-Tupu in the Koshi River basin

作　　者：张建强[1] 黄宇 陈容[1] 孔博[1] Zhang Jianqiang;Huang Yu;Chen Rong;Kong Bo(Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,Sichuan,China;School of Surveying and Geoinformation Engineering,East China University of Technology,Nanchang 330013,Jiangxi,China)

机构地区：[1]中国科学院、水利部成都山地灾害与环境研究所,四川成都610041 [2]东华理工大学测绘与空间信息工程学院,江西南昌330013

出　　处：《地理科学》2024年第6期1111-1122,共12页Scientia Geographica Sinica

基　　金：青藏高原第二次综合科学考察研究项目(2021QZKK0202);中国科学院西部之光项目(E3R2120)资助。

摘　　要：以科西河流域滑坡为例,对滑坡信息图谱的概念和内容进行研究,归纳滑坡信息图谱由条件图谱、编目图谱、风险分布图谱和风险管理图谱组成,提出滑坡信息图谱按表达内容和功能的分类方法。基于滑坡条件图谱与编目图谱,采用空间统计的方法,揭示了研究区滑坡垂直向和纬度向分布与演化的空间分异规律:滑坡在垂直向200~1 000 m的高程段内为数量高密度区,400~1 200 m和2 800~3 600 m高程段面积比例大,北纬26°42′00″N~26°48′00″N为数量高密度区,26°42′00″N~26°48′00″N和27°24′00″N~27°30′00″N滑坡面积比例较大;相比1992年滑坡,新增滑坡在垂直向200~1 000 m和2 800~3 600 m高程段数量密度高,在3 200~3 400 m高程段面积比例较大,北纬26°48′00″N~26°54′00″N和27°48′00″N~27°54′00″N为高数量密度区,27°24′00″N~27°42′00″N为高面积比例区。This study examines the development and application of landslide Informatic-Tupu,utilizing the Koshi River basin as a case study.The landslide Informatic-Tupu is classified into 4 distinct types based on their content and functionality:formative factors Tupu,landslide inventory Tupu,landslide risk Tupu,and landslide risk management Tupu.Statistical methods are employed to analyze the spatial differentiation patterns of landslide distri-bution and evolution along both vertical and latitudinal axes within the study area.Vertically,landslides exhibit high point density within the elevation range of 200~1000 m,with significant area proportions observed in the elevation ranges of 400~1200 m and 2800~3600 m.Latitudinally,landslides are densely concentrated between 26°42′00″N and 26°48′00″N,with large area proportions found between 26°42′00″N and 26°48′00″N,as well as between 27°24′00″N and 27°30′00″N.Comparative analysis with landslide data from 1992 reveals an increase in landslide point density within the elevation ranges of 200~1000 m and 2800~3600 m.Additionally,a larger area proportion is observed in the elevation range of 3200~3400 m.The study also identifies areas with high landslide point density between 26°48′00″N and 26°54′00″N,and between 27°48′00″N and 27°54′00″N,while regions with significant area proportions are located between 27°24′00″N and 27°42′00″N.This comprehensive analysis provides valuable insights into the spatial patterns and evolution of landslides in the Koshi River basin.The findings can inform risk assessment and management strategies,enhancing mitigation and preparedness efforts in landslide-prone areas.The categoriza-tion of landslide Informatic-Tupu into formative factors,inventory,risk assessment and risk management types presents a systematic approach to understanding and addressing landslide hazards,which can be applied to oth-er regions facing similar challenges.

关 键 词：地学信息图谱 滑坡 垂直地带性 纬度地带性 科西河流域 

分 类 号：P28[天文地球—地图制图学与地理信息工程]