Effects of aspect on distribution pattern of Taxus chinensis population in Yele,Sichuan Province:An analysis based on patches information

Abstract

Abstract: Employing GIS method and based on patches information,this paper studied the effects of aspect on the distribution pattern of Taxus chinensis population in Yele,Sichuan Province.The results showed that Taxus chinensis population mainly distributed on the aspects of northwest,northeast,east and north.These aspect patches were absolutely dominant on area,mean size,mean edge and the number of Taxus chinensis.There existed a significant correlation between aspect and Taxus chinensis distribution.Taxus chinensis distributed preferentially on north,northeast,northwest and east patches,then on west and southwest patches,and finally on flat and southeast patches.The distribution patterns of Taxus chinensis in Yele were clustering,except on south aspect patches.The intensity of clustering on north aspect patches was the highest,with the value of Clark-Evans (CE) index being 0.906.The intensity of clustering on northeast and northwest aspect patches was lower than that on north aspect patches,with the CE value 0.797 and 0.563,respectively.The CE values on the rest aspect patches were all not larger than 0.5.There existed a significant positive correlation between the intensity of clustering index,number of patches,total patch edge,and the number of Taxus chinensis distributed on the patches,with the value of correlation coefficient 0.936,0.735 and 0.802,respectively.There were no significant correlations among the intensity of clustering,patch area,mean patch size,mean patch edge,and mean shape index of aspect patches.

Key words: Yele, Taxus chinensis, Population, Distribution pattern, Aspect patches, GIS, Landscape indices

CLC Number:

S718.54

XU Xiao, SU Zhixian, YAN Xianchun . Effects of aspect on distribution pattern of Taxus chinensis population in Yele,Sichuan Province:An analysis based on patches information[J]. Chinese Journal of Applied Ecology, 2005, 16(6): 985-990.

References

[1] Chen L-X(陈利项),Xu J-Y(徐建英),Fu B-J(傅伯杰),et al.2004.Quantitative assessment of patch edge effects and ecological implications.Acta Ecol Sin(生态学报),24(9):1827～1832(in Chinese)
[2] Clark PJ,Evans FC.1954.Distance to nearest neighbor as a measure of spatial relationships in populations.Ecology,35:445～453
[3] Dai X-H(戴小华),Yu S-X(余世孝).2003.Analysis of popultion distribution pattern based on GIStechnique.Acta Sunyatseni Univ (Nat Sci)(中山大学学报·自然科学版),42(1):75～78(in Chinese)
[4] Fuldner K.1995.Zur strukturbeschreibung in Mischbestanden.Forstarchiv,66:235～240
[5] Hu J-C(胡锦矗).2003.AReport of the Comprehensive Survey on Yele Nature Reserve in Sichnan,China.Chengdu:Sichuan Science and Technology Press.1～29(in Chinese)
[6] Huang Y-Q(黄玉清),Li X-K(李先琨),Su Z-M(苏宗明).2000.Structure of Taxus chinensis var.mairei population in Yuanbaoshan of Guangxi,China Ⅱ.Height structure.Guihaia(广西植物),22(2):126～130(in Chinese)
[7] He Z-B(何志斌),Zhao W-Z(赵文智).2004.Spatial pattern of two dominant shrub populations at transitional zone between oasis and desert of Heihe River Basin.Chin J Appl Ecl(应用生态学报),15(6):947～952(in Chinese)
[8] Li H-B(李哈滨),Wang Z-Q(王政权),Wang Q-C(王庆成).1998.Theory and methodology of spatial heterogeneity quantification.Chin J Appl Ecol(应用生态学报),9(6):621～657(in Chinese)
[9] Li T-W(李天文),Liu X-J(刘学军),Tang G-A(汤国安).2004.Influence of terrain complexity on slope and aspect.J Mount Sci(山地学报),22(3):272～277(in Chinese)
[10] Li X(李新),Hu L-L(胡理乐),Huang H-D(黄汉东),et al.2003.Structures and spatial distribution patterns of dominant population in Sycopsis sinensis community in Houhe Nature Reserve.Chin J Appl Ecol(应用生态学报),14(6):849～852(in Chinese)
[11] Li X-K(李先琨),Huang Y-Q(黄玉清),Su Z-M(苏宗明).2000.Distribution pattern and dynamics of Taxus chinensis var.mairei population on Yuanbaoshan Mountain.Chin J Appl Ecol(应用生态学报),11(2):169～172(in Chinese)
[12] Li X-K(李先琨),Xiang W-S(向悟生),Su Z-M(苏宗明).2004.Structure and dynamics of Taxus chinensis var.mairei clonal population.Chin J Appl Ecol(应用生态学报),15(2):177～180(in Chinese)
[13] Liao W-B(廖文波),Su Z-Y(苏志尧),Cui D-F(崔大方),et al.2002.Study on plant communities of Taxus mairei in north Guangdong.Acta Bot Yunnan(云南植物研究),24(3):265～306(in Chinese)
[14] Liu C-R(刘灿然),Chen L-Z(陈灵芝).1999.Distribution characteristics of patch sizes in the vegetation landscape in Beijing.Acta Bot Sin(植物学报),41(2):199～205(in Chinese)
[15] Liu C-R(刘灿然),Chen L-Z(陈灵芝).2000.Analysis of patch shape with shape indices for the vegetation landscape in Beijig.Acta Ecol Sin(生态学报),20(4):559～567(in Chinese)
[16] Liu C-R(刘灿然),Chen L-Z(陈灵芝).2000.Landscape scale fractal analysis of patch shapeinthe vegetation of Beijing region.Acta Phytoecal Sin(植物生态学报),24(2):129～134(in Chinese)
[17] Ma K-M(马克明),Zu Y-G(祖元刚),Ni H-W(倪红伟).1999.Fractal properties ofthe spatial pattern of Larix gmelinii population-Correlation dimension.Acta Ecol Sin(生态学报),19(3):353～358(in Chinese)
[18] Ma K-M(马克明),Zu Y-G(祖元刚).2000.Fractal properties of the spatial pattern of Larix gmelinii population-Information dimension.Acta Ecol Sin(生态学报),20(2):187～192(in Chinese)
[19] Oneill RV,et al.1988.Indices of landscape pattern.Landscape Ecol,(1):153～162
[20] Piebu EC.1985.Mathematical Ecology.Second edition.New York:Wiley-Interscience Press.
[21] Tian Y-Q(田玉强),Li X(李新),Jiang M-X(江明喜).2003.Fractal properties of the spatial pattern of rare and endangered plant population in Houhe Nature Reserve in Hubei:Box-counting dimenson.Chin J Appl Ecol(应用生态学报),14(5):681～684(in Chinese)
[22] Wang B-S(王伯荪),Li M-G(李鸣光),Peng S-L(彭少麟).1995.Phytopopalology.Beijing:Higher Education Press.100～104(in Chinese)
[23] Wu J-J(伍建军),Liao W-B(廖文波),Cui D-F(崔大方),et al.2002 Research on the communities with Taxus mairei in north Guangdong Province:Species diversity and population pattern.Guihaia(广西植物),22(1):61～66(in Chinese)
[24] Yu S-X(余世孝).1995.AnIntroduction of Mathematical Ecology.Beijing:Literature of Science and Technology Press.68～87(in Chinese)
[25] Yu W-F(于文福).1999.The landmark of wild plant conservation in China.J Plant(植物杂志),(5):3～11(in Chinese)
[26] Zeng H(曾辉),Kong N-N(孔宁宁).2002.Landscape pattern analysis based on boundary characteristics.Chin J Appl Ecol(应用生态学报),13(1):81～86(in Chinese)
[27] Zhang J-T(张金屯).1995.Methodsin Quantitative Vegetation Ecology.Beijing:China Science and Technology Press.1～370(in Chinese)
[28] Zhang J-T(张金屯).1998.Analysis of spatial point pattern for plant species.Acta Phytoecol Sin(植物生态学报),22(4):344～349(in Chinese)
[29] Zhang J-T(张金屯),QiuY(邱扬),Zheng F-Y(郑凤英).2000.Quantitative methods in landscape pattern anakysis.J Mount Sci(山地学报),18(4):346～352(in Chinese)
[30] Zhang Y-X(张芸香),Guo J-P(郭晋平).2001.The dynamics of patch density and edge density inforestedlandscape of Shanxi,China-A case study in Guandishan mountain forest district.Chin J Ecol(生态学杂志),20(1):18～21(in Chinese)