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Spatial Heterogeneity and Variabilit

时间:2021-12-08 13:09:08 生物医学论文 我要投稿

Spatial Heterogeneity and Variability of a Large-Scale Vegetation Community Using a Power-Law Model

Spatial heterogeneity and stability are fundamental indices for describing vegetation communities. The spatial distribution characteristics of the vegetation in Nenjiang region of northeastern China were evaluated using a variance power-law model. The data fits the model well with estimates given for the levels of heterogeneity for not only single species but also the community as a whole. The linear regression indicates that the species in the community exhibit a consistently organized spatial pattern, as is often discovered in field surveys but rarely seen in artificial systems. The species deviations from the regression line, which exhibit a leptokurtic distribution, may reflect the variability of the community. Thus, the model provides a general tool for management and regulation of ecosystems, especially where there is human disturbances.

作 者: Song Zhiyuan Huang Daming SHIYOMI Masae WANG Yusheng TAKAHASHI Shigeo YOSHIMICHI Hori YAMAMURU Yasuo CHEN Jun   作者单位: Song Zhiyuan,Huang Daming(Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, China)

SHIYOMI Masae,YOSHIMICHI Hori,YAMAMURU Yasuo,CHEN Jun(Faculty of Science, Ibaraki University, Bunkyo 2-1-1, Mito 310-8512, Japan)

WANG Yusheng(College of Animal Science, Northeast Agricultural University, Harbin 150030, China)

TAKAHASHI Shigeo(National Institute of Livestock and Grassland Science, 768 Senbonmatsu, Nishinasuno, Tochigi 329-2793, Japan) 

刊 名: 清华大学学报(英文版)  EI 英文刊名: TSINGHUA SCIENCE AND TECHNOLOGY  年,卷(期): 2005 10(4)  分类号: Q94  关键词: power-law model   spatial heterogeneity   community variability   leptokurtic distribution   resilience