山区的一种特殊灾害生态现象研究

Study of a specific catastrophe-ecologic phenomenon in the mountain region

山区泥石流发生后的泥石流滩地呈现复杂多样的生态过程，是山区所特有的一种灾害生态现象。在人烟稀少的较高海拔，泥石流滩地植物生长表现为一种自然恢复过程。通过贡嘎山东坡高海拔黄崩溜沟泥石流滩地上发生的灾害生态现象和过程的实地研究，发现泥石流滩地植物的生态过程和群落特征，可以揭示近代泥石流的形成时间和自然植被生态系统的演替规律。研究表明，加强泥石灾害生态现象的研究，可以促进灾害学与生态学科的渗透，具有重要的理理论实践意义。

Ecologic process of the wash lands by debris flows in mountain region is very com. plex and variety, and is a specific catastrophe-ecologic phenomenon in mountain region Plant growth of the wash lands of debris flows distributed in high altitude area shows a natural restorative process. It is found that plant growth process and community feature in the wash lands of debris flow can bring to light of the time of debris flow formation in the last hundred years and to the succession law of natural vegetation ecosystem through study in the catastrophe-ecologic phenomena and the ecologic process in wash lands of debris flow in the Huangbenliu Gully of the east slope of Gongga Mountain. The research result for this region also shows that study of the catastrophe-ecologic phenomena of debris flow can promote scientific infiltration between the ecology and the catastrophology, and has important theoretical and practical significances.