地貌几何数学模型在黄土高原沟道分级和坝系规划中的应用  

Application of American Physiognomy Geometry Ration Math Model on Channel Grade and Dam Series Layout

作　　者：付明胜[1] 任兆选 白平良[1] 

机构地区：[1]黄河水土保持绥德治理监督局,陕西绥德718000

出　　处：《中国水土保持科学》2003年第4期25-27,55,共4页Science of Soil and Water Conservation

摘　　要：针对我国在沟道分级中存在的问题,为了从沟道级别上既能反应侵蚀规律,又能进行同级之间类比,便于坝系布局,采用美国A.N.Strahler提出的地貌几何定量数学模型分级方法,该方法强调在一个流域内,最小的不分支的水道属一级水道,2个一级水道汇合后组成的新水道,称为二级水道,以此类推。在1/108地形图上进行分级。通过在黄土丘陵沟壑区3条典型小流域坝系现状分析和坝系规划中的应用,取得了预期的效果。按沟级分别布设不同规模的工程,便于坝系布局走向科学化、规范化,同时使地貌研究朝着定量化的方向发展。采用美国地貌几何定量数学模型进行沟道分级,研究水土流失规律、进行地貌几何定量分析和坝系规划,具有普遍的理论意义和实用价值。In order to respond corroding law from channel level and analogy among same levels , the grading method of American physiognomy geometry ration math model put forward by A. N. Strahler, which stressed that I penstock was minimum penstock of no embranchment and the new penstock joined and formed by two I penstocks intituled Ⅱ penstock , and the like , is adopted to grade on the relief map of ten thousandth. The application of dam series status quo analysis and layout in three small representative valley of loess hill gully has acquired anticipative purpose. Disposing different scale project respectively according to channel level is convenient for dam series layout tending towards scientifical-ness and standardization, at one time for physiognomy research developing quantificationally. Therefore adopting Math Model of American Physiognomy Geometry Ration to Channel Grade, water and soil lose law study, physiognomy geometry ration analysis and dam series layout takes on pervasive academic significance and practical value.

关 键 词：坝系 分级 黄土高原 水土流失规律 黄土丘陵沟壑区 侵蚀规律 地貌 几何数 布局 沟道 

分 类 号：S157[农业科学—土壤学] G633.63[农业科学—农业基础科学]