濒危植物桫椤个体生态场的研究

The Study on Ecological Field of Endangered Plant Alsophila spinulos Individual

通过构建桫椤（Alsophila spinulosa）个体生态场模型，对福建瓜溪桫椤自然保护区内不同地段的桫椤个体生态场特性进行了分析讨论。研究结果显示，8个不同地段的桫椤种群平均个体生态势最大值大小次序为Q5〉Q6〉Q4〉Q3〉Q8〉Q7〉Q2〉Q1，个体小的桫椤个体生态势小，个体大的生态势则大；不同地段桫椤种群平均个体生态势的消减形式都近似于Gaussian分布；生态场有效作用距离从0．058-8．475m不等，作用范围在0．0036-381．307m^2，大小次序为Q5〉Q6〉Q4〉Q3〉Q8〉Q7〉Q2〉Q1。

Ecological field characteristics of Alsophila spinulosa individuals in different sites in Guaxi A. spinulosa Nature Reserve of Fujian Province were analyzed and discussed by constructing the model of ecological field of A. spinulosa individual. The results indicated that Q5 〉 Q6 〉 Q4 〉 Q3 〉 Q8 〉 Q7 〉 Q2 〉 Q1 was the order of the maximal values of ecological potential of average individuals of Alsophila spinulosa populations in 8 different sites. Ecological potential of small individual was low and large individual was high. The extinction form of ecological potential of average individual in the each site all trended to Gaussian distribution. The effective influencing distances of ecological field of average individuals in different sites ranged from 0.058 m to 8.475m,the effective influencing areas from 0.0036 m^2 to 381.307 m^2, and the order was Q5 〉 Q6 〉 Q4 〉 Q3 〉 Q8 〉 Q7 〉 Q2 〉 Q1.