水生高等植物对湖泊生态系统的影响  

Effects of Macrophyte on the Lake Ecosystem

作　　者：王兴民[1] 许秋瑾[2] 邢晓丽 金相灿[2] 马广存[1] 李景超[1] 

机构地区：[1]山东省分析测试中心,山东济南250014 [2]中国环境科学研究院,北京100012 [3]山东省药品食品职业学院,山东威海264210

出　　处：《山东科学》2007年第2期29-32,共4页Shandong Science

基　　金：国家重点基础研究发展规划项目(2002CB412307)

摘　　要：从多种角度分析了水生高等植物在湖泊生态系统中的作用以及和其它生物的关系,并从覆盖率、群落结构、植物配比等角度讨论了湖泊水生高等植物的最佳保有生物量。表明水生高等植物在湖泊生态系统中具有重要的环境生态功能和初级生产功能,水生高等植物的消退与过量生长都会导致湖泊生态系统生物多样性下降、生态系统变得脆弱和不稳定;维持湖泊生态系统良性循环,水生植物的生物量至少要大于1000g/m2,水生植物的覆盖度要大于30%,除了控制水生植物在水体中的总体生物量,还应重视挺水植物、浮叶植物、沉水植物和漂浮植物之间生物量的合适比例,并需密切注意水生植被群落结构的变化情况。Effects of Macrophyte on the lake ecosystem as well as its relation to other biology are analysed in many aspects, and the optimum biomass of macrophyte in the lake ecosystem is discussed from cover rate , community structure and distribution proportion of plants. It is proved that macrophyte possess the important function of environmental ecology and the elementary function of production in the lake ecosystem, and that both the fadeaway and excessive growth of Macrophyte cause the biological diversity of the lake ecosystem to descend and become fragile and unstable. To keep the lake ecosystem better, the biomass of aquatic plant should be more than 1000g/m^2 at least and the cover degree of aquatic plant should be more than 30%. In addition to controlling the overall biomass in the water, we should also attach importance to the appropriate proportion of biomass between emergent macrophyte, floating-left macrophyte, submerging macrophyte, and floating macrophyte, and should pay clossly attention to the changes of community structures of aquatic plant.

关 键 词：水生高等植物 湖泊生态系统 生物量 

分 类 号：X171.4[环境科学与工程—环境科学]