鄱阳湖典型湿地土地覆盖动态变化及其影响因子分析

Land Cover Dynamic Change and Driving Factors in Typical Wetland Area of Poyang Lake

鄱阳湖的通江特性增强了鄱阳湖湿地生态系统的复杂性,对鄱阳湖流域和长江流域的生态环境产生重要影响.在分析鄱阳湖典型湿地生态环境基本特点的基础上,通过解译1976年和1999年两景遥感影像,分析鄱阳湖典型湿地土地覆盖变化,进而探讨湿地覆盖变化的成因.分析结果表明:人类活动、三角洲发育、鄱阳湖水位季节性涨落及其相关的气候条件导致的鄱阳湖典型湿地生物多样性季节性变化是鄱阳湖典型湿地覆盖动态变化的重要影响因子.

The relationship between terrestrial and aquatic interaction or human activity and land cover dynamic change is meaningful to wetland resources sustainable use and environment protection. Based on the interpretation of two landsate images, characters of land cover dynamic change in poyang lake typical wetland area have been discussed, and results indicate that terrestrial and aquatic interaction, human activity and light and heat condition are the main driving factors to the wetland cover change.