Spatial distribution pattern and fractal analysis of Larix chinensis populations in Qinling Mountain

Abstract

Abstract: 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 128m² and 512m²,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.

Key words: Larix chinensis, Fractal dimension, Spatial distribution pattern, Pattern intensity, Pattern scale

CLC Number:

S718

GUO Hua, WANG Xiaoan, XIAO Yaping . Spatial distribution pattern and fractal analysis of Larix chinensis populations in Qinling Mountain[J]. Chinese Journal of Applied Ecology, 2005, 16(2): 227-232.

References

[1] Hu Y-M(胡远满), Xu W-D(徐文铎), Zheng Y-R(郑元润).1996. Spatial distribution pattern of natural Pinus sylvestriformis population with same age. Chin J Appl Ecol (应用生态学报), 7(2):113～116(in Chinese)
[2] Jian Z-X(建忠心), Li Z-J(李智军), Di W-Z(狄维忠), et al.1989. The Compositive Review Papers of Taibai Mountains Nature Reserve Area. Xi'an:Shannxi Normal University Press. 27～33 (in Chinese)
[3] Li H-T(李海涛). 1995. Introduction to studies of the pattern of plant population. Chin Bull Bot (植物学通报), 12 (2):19～26(in Chinese)
[4] Liu R-L(刘仁林), Zhu L-L(朱玲琳). 1997. Study on spatial pattern of population of Taxus mairei in its natural community. Environ Dev(环境与开发), 12(1):3～4(in Chinese)
[5] Ma K-M(马克明), Zu Y-G(祖元刚). 2000. Fractal properties of the spatial pattern of Larix grnelini population-Information dimension. Acta Ecol Sin (生态学报), 20(2):187～192(in Chinese)
[6] Ma K-M(马克明), Zu Y-G(祖元刚). 2000. Fractal properties of the spatial pattern of Larix gmelini population-Box-counting dimension. Bull Bot Res (植物研究), 20 (1):104～111 (in Chinese)
[7] Qi J-Z(戚继忠), He Y-F(赫福), Li K-Y(李克元), et al. 1996.A study on the dispersion pattern and its dynamics of Corylus heterophylla population. J Jilin For Univ (吉林林学院学报), 12 (2):99～103 (in Chinese)
[8] Ren Y(任毅), Yang X-Z(杨兴中), Wang X-J(王学杰), et al.2002. The Animal and Plant Resources of Changqing National Nature Reserve. Xi'an:Northwest University Press. 11～32 (in Chinese)
[9] Wang B-S(王伯荪), Li M-G(李鸣光), Peng S-L(彭少麟). 1995.Phytopopulology. Guangzhou:Guangdong Higher Education Press.85～128(in Chinese)
[10] Wang D-X(王得祥), Chen H-B(陈海滨), Lou J-J(刘建军), et al. 1998. Distribution pattern and dynamics of Pinus armandi population in the Qinling Mountains. Acta Bot Boreal-Occident Sin (西北植物学报), 18(4):622～628(in Chinese)
[11] Wang J-R(王吉忍), Ma Y-S(马亦生), Li Z-J(李智军).2001.The Management Plan of Taibai Mountains National Nature Reserve in Shannxi. Xi'an:Shannxi Press. 1～22 (in Chinese)
[12] Wen Y-G(温远光),Li X-X(李信贤), Yuan C-A(元昌安), et al.1996. A preliminary study on the structure and dynamics of dominant tree populations in natural secondary forest in Daming Mount Tianping cutting block. J Guangxi Agric Univ(广西农业大学学报), 15(2):118～124(in Chinese)
[13] Wu J-L(吴继林). 2001. The applicability of various methods in analysis of the spatial distribution pattern of the endanger and rare plant Tsuga longibtracteate population. Acta Agric Univ Jiangxi (江西农业大学学报), 23(3):345～349(in Chinese)
[14] Zhang F(张峰), Shangguan T-L(上官铁梁). 2000. Population patterns of dominant species in Elaeagnus mollis communities,Shanxi. Acta Phytoecol Sin (植物生态学报), 24(5):590～594 (in Chinese)
[15] Zhang W-H(张文辉), Lu Z-J(卢志军), Li J-X(李景侠), et al.2002. A comparative study on spatial distribution pattern and its dynamics of Quercus variabilis populations among different forest areas in Shaanxi Province, China. Acta Bot Boreal-Occident Sin (西北植物学报), 22(3):476～483(in Chinese)
[16] Zhang Z-G(张治国), Wang R-Q(王仁卿). 1998. On island biodiversity of Qingdao offshore Ⅱ. The spatial pattern of Camellia japonica population. J Shandong Univ(Nat Sci) (山东大学学报.自然科学版), 33(4):455～461(in Chinese)
[17] Zhou J-L(周纪纶), Zheng S-Z(郑师章), Yang C(杨持). 1992.Population Ecology. Beijing:Higher Education Press. 96～123 (in Chinese)