金沙江干热河谷地理环境演化研究进展与问题

Progress and Issues on Geographical Environment Evolution in Dry-Hot Valley of Jinsha River

摘要: 金沙江干热河谷是一种分布在金沙江流域的特殊地理景观，这些地区的生态环境与周围地区有巨大差异，形成一种局部的干旱生境。由于特殊的干、热气候条件使得这些地区的生态环境恶劣，生态系统脆弱，严重地制约了这些地区的生态保护和社会发展。本文主要对近几十年来众多学者对金沙江干热河谷的生态环境特点、植被、水土及演化原因的研究进行了回顾，认为现阶段研究主要存在以下问题：干热河谷的界定不清；干热河谷形成原因及过程研究不明；人地关系研究不足；整体、系统的研究较少。有鉴于上述问题，我们提出了未来研究应予重视或优先研究的方向：重视干热河谷的界定研究；加强干热河谷形成原因和过程的研究；开展人地关系的深层次研究；深入干热河谷对全球变化响应的研究；开展整体、系统的研究。

Abstract: Dry-hot valley of Jinsha River is a special geographical landscape distribute in Jinsha River drainage area. Those areas are brush-fire arid environment and their ecological environment have very huge difference with the surrounding areas. Due to the special dry and hot climate, the ecological environment are harsh and fragile, and restrict those areas’ ecological protection and social development. This article primarily reviewed the studies of recent decades from the aspects of the natural environment characteristics, the vege-tation, the water and soil and the cause of environment evolution in dry-hot valley of Jinsha River. The au-thors think that the studies at present stage have the following problems. The differentiation of dry-hot valley is not clear; the still confusing; lack of environment and human-nature relationship research; the integral and systematic researches are few. For the problems, we present several aspects that should be pay attention and give priority to consider in the future. Attach importance to the differentiation of dry-hot valley; strengthen the research of cause and process of evolution; do more deep level human-nature relationship and the response of dry-hot valley to global change researches; do some integral and systematic researches.