[1]童丽丽,汤庚国*,许晓岗.城市森林群落结构研究现状及发展评价[J].南京林业大学学报(自然科学版),2007,31(05):113-116.[doi:10.3969/j.jssn.1000-2006.2007.05.026]
 TONG Li-li,TANG Geng-guo*,XU Xiao-gang.Status and Development Tendency of Community Structure of Urban Forest[J].Journal of Nanjing Forestry University(Natural Science Edition),2007,31(05):113-116.[doi:10.3969/j.jssn.1000-2006.2007.05.026]
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城市森林群落结构研究现状及发展评价
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
31
期数:
2007年05期
页码:
113-116
栏目:
综合述评
出版日期:
2007-05-20

文章信息/Info

Title:
Status and Development Tendency of Community Structure of Urban Forest
文章编号:
1000-2006(2007)05-0113-04
作者:
童丽丽汤庚国*许晓岗
南京林业大学风景园林学院, 江苏 南京 210037
Author(s):
TONG Li-li TANG Geng-guo* XU Xiao-gang
College of Landscape Architecture Nanjing Forestry University, Nanjing 210037, China
关键词:
城市森林群落结构发展趋势
Keywords:
Urban forests Community structure Development tendency
分类号:
S718
DOI:
10.3969/j.jssn.1000-2006.2007.05.026
文献标志码:
A
摘要:
<正>为了探测含零较多的计数数据对ZIP回归模型的影响,基于EM算法和完全数据似然函数,笔者利用数据删除方法研究了模型的全局影响,得到了参数估计的一步近似表达式以及相应的广义Cook距离和Q-距离,并研究了在EM框架下的广义杠杆值。最后,通过实际问题说明了所得统计量的有效性。
Abstract:
The community structure of urban forest, the basis of urban forest research, are determined by different plants species and its different patterns of spatial distributions. The paper provides an overview of the past and current research on community structure both at home and abroad from three aspects: the diversity research, dynamics research, the species selection and the models of plantation arrangement. It also advances development tendency of community structure in the future as well.

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更新日期/Last Update: 2013-05-20