不同岩溶环境系统的水文和生态效应研究

A Comparative Study on Hydrological and Ecological Effects in Different Karst Ecosystems

本文选择 3个不同类型的岩溶生态系统作为研究对象。从植被发育状况、群落特征、水化学特征对系统的响应、表层岩溶带功能、系统生态效应及水文效应进行了对比研究。结果显示 ,植被群落特征较好地反映了生态环境系统遭受破坏的程度及所处的演化阶段 ;因表层带本身结构的差异 ,使其具有不同的功能 ,特别是表现在对系统小气候和表层岩溶带水资源的调节方面 ;水化学对系统的响应过程 ,反映了不同系统中物质运移特征的差异。

Based on a comparative analysis of different karst ecosystems, the research work mainly focuses on the situation of vegetation growth, the community characteristics of vegetation, the hydrochemical respondence to the system, the functions of epikarst zone, and the ecological and hydrological effects. The results show that a) the evolution stage and the damage extent of the ecosystem are well reflected by the community characteristics of vegetation; b) the inner varieties of habitat constitute the basis which makes it possible for the ecosystem to be in the process of sustainable development; c) the functions of different epikarst zones depend mainly on their specific structures and show off through their adjustment to meteorological factors of the environment and their capacity of holding water resources; d) the processes of hydrochemical respondence to the ecosystem, moreover, have reflected the differences in transportation of such substances as carbon, H 2O and calcium.