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题名: A measure of spatial stratified heterogeneity
作者: Wang, Jin-Feng; Zhang, Tong-Lin; Fu, Bo-Jie
刊名: ECOLOGICAL INDICATORS
出版日期: 2016-08
卷号: 67, 页码:250-256
关键词: Spatial stratified heterogeneity ; q-Statistic ; Probability density function
DOI: 10.1016/j.ecolind.2016.02.052
部门归属: 城市与区域生态国家重点实验室
英文摘要: Spatial stratified heterogeneity, referring to the within-strata variance less than the between strata variance, is ubiquitous in ecological phenomena, such as ecological zones and many ecological variables. Spatial stratified heterogeneity reflects the essence of nature, implies potential distinct mechanisms by strata, suggests possible determinants of the observed process, allows the representativeness of observations of the earth, and enforces the applicability of statistical inferences. In this paper, we propose a q-statistic method to measure the degree of spatial stratified heterogeneity and to test its significance. The q value is within [0,1] (0 if a spatial stratification of heterogeneity is not significant, and 1 if there is a perfect spatial stratification of heterogeneity). The exact probability density function is derived. The q-statistic is illustrated by two examples, wherein we assess the spatial stratified heterogeneities of a hand map and the distribution of the annual NDVI in China. (C) 2016 Elsevier Ltd. All rights reserved.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35517
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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