四川省面积-高程积分空间格局分析  

Spatial Pattern Analysis of Area-Elevation Integral in Sichuan Province

作　　者：刘梦蝶 邓青春[1,2,3] 刘辉 张斌[1,2,3] LIU Meng-die;DENG Qing-chun;LIU Hui;ZHANG Bin(School of Geographical Sciences,China West Normal University,Nanchong Sichuan 637009,China;Sichuan Provincial Engineering Laboratory of Monitoring and Control for Soil Erosion on Dry Valleys,China West Normal University,Nanchong Sichuan 637009,China;Liangshan Soil Erosion and Ecological Restoration in Dry Valleys Observation and Research Station,Liangshan Sichuan 616753,China)

机构地区：[1]西华师范大学地理科学学院,四川南充637009 [2]西华师范大学四川省干旱河谷土壤侵蚀监测与控制工程实验室,四川南充637009 [3]大小凉山干旱河谷土壤侵蚀与生态修复野外科学观测研究站,四川凉山616753

出　　处：《西华师范大学学报（自然科学版）》2025年第1期49-57,共9页Journal of China West Normal University(Natural Sciences)

基　　金：国家自然科学基金面上项目(41971015)。

摘　　要：用面积-高程积分(HI)定量分析流域断面面积与海拔之间的关系,可作为划分流域地貌形态与发育阶段的标准。在ASTER GDEM数据的基础上,运用ArcGIS及相关软件进行提取,利用起伏比法计算四川省HI值来探讨四川省的流域地貌发育情况。结果表明:四川省HI值介于0.11~0.76,均值为0.43,整体处于地貌发育的壮年期,是地形地貌、构造、岩性等多种因素共同作用的结果;HI值空间分布明显呈西高东低趋势,HI值与海拔、起伏度和坡度存在一定的相关性;构造活动通过影响断裂带的活动性影响流域地貌发育,岩性和地貌之间的关系主要体现在岩石的抗侵蚀能力上。该研究有助于认识四川省流域发育特征,为后期研究流域地貌演化奠定基础。Quantitative analysis of the relationship between the cross-sectional area and elevation by area-elevation integral(HI)can be used as a mark to divide the geomorphologic morphology and development stages of the watershed.Based on ASTER GDEM data and extracted by ArcGIS and related softwares,the area-elevation integral value(HI)of Sichuan province is calculated by the relief ratio method to explore the geomorphology development of watershed there.The results indicate the following:the HI value of Sichuan province is 0.11~0.76,with an average value of 0.43,which suggests that Sichuan province is in the prime stage of geomorphic development on the whole,driven by combined action of many factors such as topography,structure and lithology;the spatial distribution of HI value presents a trend of higher in the west but lower in the east,and HI value is related to elevation,relief and slope;the influence of tectonic movement on the activity of fault zone affects the development of gemorphology,and the relationship between lithology and geomorphology is mainly embodied in the anti-erosion ability of rocks.This study helps understand the development characteristics of watershed in Sichuan province and lay a foundation for the later study on watershed geomorphology evolution.

关 键 词：DEM 水文分析 面积-高程积分 空间格局 地貌发育 

分 类 号：P548[天文地球—构造地质学]