摘要
洞庭湖湿地是一个与长江相连通的大型内陆淡水湿地， 它具有复杂多样的功能和多方面的价值。本文利用遥感与地理信息系统技术对多时相的遥感卫星影像进行处理，获取不同年份、不同季节的洞庭湖湿地类型面积， 结合多种文献资料，研究１９４９ 年以后洞庭湖湿地面积的季节变化与年际变化， 以及近期湿地演替的规律。此外， 讨论了影响湿地的面积变化与演替的几个重要因素。使得人民能较全面的地了解洞庭湖湿地，
Dongtinghu wetland is a great inner land freshwater wetland connecting with the Changjiang river. It has complex and various functions and values. This paper researchs the area change and succession rules of Dongtinghu wetland after 1949. The research is important for to protection, exploitation and utilizatiion of Dongtinghu Wetland, Major contents include: (1) To get the areas of different types of Dongtinghu wetland in different years and seasons by applying remote sensing and GIS technolgy. (2) To analyse seasonal and annual change of Dongtinghu wetland and succession rules of the wetland in recent years, based on classification results of multi phase satellite images combined with manifold literature information. The area of Dongtinghu wetland changes obviously between seasons and years. The annual change includes the change of the whole area of the wetland and the area of each wetland type. The area change and succession of different part of Dongtinghu wetland is different. (3) To analyse some major factors influencing the area change and succession of the wetland. These factors include two aspects: natural factors (hydrology, mud sand deposition, etc.) and human factors (embankment, reclamation, etc.). The dominant factors are human factors after 1949.
出处
《地理研究》
CSCD
北大核心
1999年第3期297-304,共8页
Geographical Research
基金
国家自然科学青年基金
关键词
湿地
遥感
面积变化
演替
洞庭湖
Dongtinghu wetland
remote sensing
area change
succession
