%0 Journal Article
%T Spatial distribution pattern and fractal analysis of Larix chinensis populations in Qinling Mountain<br>秦岭太白红杉种群空间分布格局动态及分形特征研究
%A GUO Hua
%A WANG Xiaoan
%A XIAO Yaping
%A <br>郭华
%J 应用生态学报
%D 2005
%I 
%X In this paper, the fractal characters of Larix chinensis populations in Qinling Mountain were studied by contiguous grid quadrate sampling method and by boxing-counting dimension and information dimension. The results showed that the high boxing-counting dimension (1.8087) and information dimension (1.7931) reflected a higher spatial occupational degree of L. chinensis populations. Judged by the dispersal index and Morisita's pattern index, L. chinensis populations clumped at three different age stages (0-25, 25-50 and over 50 years). From Greig-Smiths' mean variance analysis, the figure of pattern scale showed that L. chinensis populations clumped in 128 m2 and 512 m2, and the different age groups clumped in different scales. The pattern intensities decreased with increasing age, and tended to reduce with increasing area when detected by Kershaw's PI index. The spatial pattern characters of L. chinensis populations may be their responses to environmental factors.
%K Larix chinensis
%K Fractal dimension
%K Spatial distribution pattern
%K Pattern intensity
%K Pattern scale<br>太白红杉
%K 分形维数
%K 空间分布格局
%K 格局强度
%K 格局规模
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=8C3646EED6379343&yid=2DD7160C83D0ACED&vid=7801E6FC5AE9020C&iid=0B39A22176CE99FB&sid=0DEB7A8A66C33AAD&eid=E1D946F217E3B046&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=14&reference_num=17