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作 者 ：马凯,蔡庆华,谢志才,黎道丰,叶麟

期 刊 ：生态学报 2003年 23卷 11期 页码：2271~2277

关键词：保安湖；沉水植物；GIS；Kringing插值；

Keywords:Baoan lake, submerged macrophytes, GIS, Kringing interpolation,

摘 要 ：以 GPS为辅助 ,在保安湖主体湖和桥墩湖进行沉水植物调查。将野外调查数据构建 GIS数据库 ,基于 GIS软件平台 ,运用 Kringing插值法对保安湖沉水植物分布进行模拟。模拟结果清楚地显示出调查时保安湖沉水植物及 4优势种 (金鱼藻 Ceratophyllum demersum L.、穗状狐尾藻 Myriophyllum spicatum L .、微齿眼子菜 Potamogeton maackianus A.Benn.及苦草 Vallisneria spiralis L.)分别在湖中的分布情况。统计后结果表明沉水植物覆盖面积占全湖面积的 92 .9% ,总生物量 (湿重 )为 1 43682 .4t。比较历史数据 ,发现湖中水生植被组成特征已由微齿眼子菜绝对优势转变为 4种植物的共同优势。

Abstract:Baoan Lake is a shallow lake spreading along the middle reach of the Yangtze River. Submerged macrophytes were surveyed in the main part of the Baoan Lake and Qiaodun Lake (subregion of Baoan Lake) by setting up 103 sampling sites with assistant of a GPS setting on August 21～23, 2001. The investigation data were compiled and a GIS database of submerged plants of Baoan Lake was established. A vector boundary map of the Baoan Lake was digitized and georeferenced, then used to introduce sampling sites. Under t...

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