摘要
喀斯特流域是由独特的地貌、水系结构及水文动态过程组成的地域综合体。因此,影响喀斯特流域枯水资源的因素复杂多样,除气候等条件外,流域的植被类型、土地利用类型、岩组类型、地貌类型等也是影响喀斯特流域枯水资源的重要因素。本文选取了19个典型喀斯特流域为研究对象,以1991至1995年水文数据和遥感数据为基础,通过实地调查,制定基于GIS和RS为基础的喀斯特流域枯水资源影响因素信息提取方法,提取各个喀斯特流域单元中枯水水资源影响因素,通过关联度分析,得出不同的自然因素对枯水资源的贡献率,即岩组类型因素>土地利用类型因素>地貌类型因素>植被类型因素。在各自然因素中,白云岩、半喀斯特低中山、草地与枯水资源的关系最为密切。
Karst drainage is a regional synthetic whole that is made up of spatial drainage boundary, unique landform, river system structure and hydrologic dynamic processes and has its own special drainage structure. Thus, there are complicated and diversified factors that influence the amount of low flow in karst basin. Except for climate, vegetable types, land use form, lithologic type and geomorphologic type are other important factors. Through field survey and based on hydrologic data from 1991 to 1995 and RS data, 19 typical karst basins are studied, and the way to collect the factors that impact low flow resource in karst basin by means of GIS and RS are established and the factors are collected in this paper. By means of relating degree analysis, the contributing rates of different natural factors to low-flow resources are obtained. It is shown that the rock type factor>the land use factor>the geomorphologic type factor>the vegetable type factor. Among the above natural factors, dolomite rocks, semi-karst lower hill, meadow are related with the low-flow resources most closely.
出处
《中国岩溶》
CAS
CSCD
2004年第1期48-55,共8页
Carsologica Sinica
基金
国家自然科学基金资助项目(40061001)
国家资源科学基金资助项目(40271055)。
