摘要
泥石流沟谷纵剖面形态系表征泥石流发育的综合地形指标。本文以利子依达沟为例，用不等时距ＧＭ（１，１）预测沟谷纵剖面形态指数Ｎ值的变化，并改进了预测模型的精度。
Debris flow, Longitudinal profile of valley,Gray forecast Abstract The shape of longitudinal profile of a debris flow valley contains the information about the evolution of the basin and the development of the debris flow, and is a synthetical topo-graphic factor which indicates the develoment of the debris flow. Taking the Liziyida valley a-long the Chendu-Kunming railway as an example, the paper forecasts the change of the form-ing index N of the longitudinal profile of the valley by using the unequal intervaI GM (1,1),and improves the accuracy of the forecast method. Finally relevant problems in forecastingvalley evolution are discussed.
出处
《地理研究》
CSSCI
CSCD
北大核心
1994年第3期53-59,共7页
Geographical Research
基金
院<新建铁路泥石流灾害预测>项目
