黄河三角洲湿地芦苇种群水深生态幅研究

通过研究黄河三角洲湿地芦苇种群密度、盖度对水深梯度的响应,利用高斯模型定量确定了芦苇种群对水深的响应关系,得到了黄河三角洲湿地芦苇种群的水深生态幅。基于密度的芦苇水深生态幅为-0.64,1.01](m),其最适生态幅为-0.23,0.60](m);基于盖度的芦苇水深生态幅为-0.95,1.23](m),最适生态幅为-0.41,0.69](m)。对以上两个生态幅取交集,最终确定芦苇的生态幅为0.64,1.01](m),最适生态幅为-0.23,0.60](m)。

Studies on ecological amplitude of reed to the environmental gradient of water depth

The present paper analyzed the response of reed populations to the environmental gradient of water depth using the biological characters of density and coverage based on Gaussian Model,quantificationally,and figured out the ecological amplitude of reed populations to water depth.The results indicated that the ecological amplitude of reed populations to water depth based on population density is -0.64,1.01](m),and the optimum ecological amplitude is -0.23,0.60](m);the ecological amplitude of reed populations to water depth based on population coverage is -0.95,1.23](m),and the optimum ecological amplitude is -0.41,0.69](m).To identify the ecological amplitude of reed populations to water depth in general,we make the intersection of the ecological amplitudes based on population density and coverage,and the outcome confirmed that the ecological amplitude of reed to water depth is -0.64,1.01](m),and that the optimum ecological amplitude is -0.23,0.60](m).