兰州市南北两山川青锦鸡儿种群空间分布格局研究  

Study on Spatial Distribution of Caragana tibetica Populations in Southern and Northern Mountains of Lanzhou

作　　者：苗丛蓉 MIAO Cong-rong(Lanzhou Forestry Survey and Design Team,Lanzhou 730000)

机构地区：[1]兰州市林业勘测设计队,甘肃兰州730000

出　　处：《青海农林科技》2020年第2期28-31,53,共5页Science and Technology of Qinghai Agriculture and Forestry

摘　　要：本文运用聚集度指标I(丛生指数)、扩散系数C、扩散指数Iδ、Cassie.R.M.指标Ca、平均拥挤度m*、聚块性指标、负二项参数K,等计算方法对兰州市南北两山川青锦鸡儿种群空间分布格局进行研究。结果表明:聚集度指标I(丛生指数)、扩散系数C、扩散指数Iδ、Cassie.R.M.指标Ca、平均拥挤度m*、Lloyd聚块性指标、负二项参数K都表明兰州市南北两山川青锦鸡儿种群空间分布格局呈聚集分布,这与川青锦鸡儿种群自身的生物学习性和种间种内关系及其所处的环境条件相关。In this papersuch methods as clumping index(I)diffusion coefficient Cdiffused index I_δCassie index(CA),mean crowding index(m*)index of patchiness(m*/m)negative binomial parameter(K) were used to analyze the spatial distribution pattern of Caragana tibetica population in Southern and Northern Mountains of Lanzhou.The results show thatdiffusion coefficient Cclumping index(I)diffused index I_δCassie index(CA),mean crowding index(m*)index of patchiness(m*/m)negative binomial parameter(K) all indicated the distribution pattern of Caragana tibetica population in Southern and Northern mountains of Lanzhou was aggregation distribution.The distribution pattern of Caragana tibetica populationwas determined by the population biological characteristicsinter-specific and intra-specific relationshipand the environmental conditions.

关 键 词：兰州市南北两山 川青锦鸡儿 空间分布格局 聚集强度 

分 类 号：S718.43[农业科学—林学]