云南东川末次冰期冰川与泥石流发育的区域性特征  

Regional Characteristics of Glacier and Debris Flow Development in Dongchuan, Yunan Province

作　　者：张威[1] 崔之久[1] 杨建强[1] 

机构地区：[1]北京大学环境学院

出　　处：《水土保持研究》2003年第3期40-44,106,共6页Research of Soil and Water Conservation

基　　金：国家自然科学基金资助项目 ( 4 0 0 70 15 )

摘　　要：云南高原东北部的东川是泥石流和冰川发育的典型地区 ,水土流失严重。对于末次冰期不同阶段的冰川与泥石流发育的区域性特征研究表明 ,二者显示良好的耦合关系和垂直地带性 ,冰川主要发育在海拔 30 0 0 m以上 ,而泥石流则在海拔 2 5 0 0～ 2 0 0 0 m以下。在季风影响下 ,冰川与泥石流的交替发育分别对应于气候的冷暖期。结论对于防御高山河谷区自然灾害的产生以及水土保持均具有重要的实际意义。Debris flow and glacier development are the typical characteristics in Dongchuan located in the north eastern Yunnan Plateau. The investigations of both the debris flow and glacier regional characteristics from different stages indicated that they have the good coupling relationships and vertical zone property. In research region, the ancient glaciers mainly developed above 3 000 m a.s.l., while the debris flow occurred below 2 500~3 000 m a.s.l. Under the monsoon influence, the glaciers and debris flow in the last glacial developed alternately, corresponding to the cold and warm stages respectively. The important significance of the results can help to protect the natural disaster and water soil erosion.

关 键 词：冰川 泥石流 末次冰期 东川 季风 

分 类 号：P642.23[天文地球—工程地质学]