Spatial distribution pattern of Larix chinensis population in Taibai Mt

Abstract

Abstract: Larix chinensis is an endangered species only distributed in Qinling Mountains of China.It has a concentrated distribution in Taibai Mt.,and plays an important role in environmental protection in the high altitude.After an investigation on fifteen 400m² plots,a comparative study on the spatial distribution pattern of L.chinensis population and its dynamics was made by the tests of discrete distribution pattern and aggregation intensity.The results showed that at different sampling areas,L.chinensis populations all performed the pattern of clustering distribution.As the sampling area increased,the congregating intensity of L.chinensis population appeared the pattern of high→low→high,but the highest congregation occurred in the areas of 100m² and 25m².The clustering intensity went down from low to high altitude,and the area with the highest clustering intensity occurred on that of 25m² in low altitude,150m² in middle altitude,and 100m² in higher altitude.The clustering intensity in shade slope was higher than that in sunny slope,and the area with the highest clustering intensity was 100m² on shade slope,and 150m² on sunny slope.With the population age increased,the distribution pattern had a trend from clustering to random,the clustering intensity decreased somewhat,and the area with the highest clustering intensity was 150m² in young or old stages,and 100m² in middle stage.The distribution pattern of L.chinensis population was related to its ecological characteristics,community composition,and environmental factors.In situ conservation should be strengthened in the future.In lower altitude or on shade slope,the measurements of thinning no-aim in tree and shrub species should be taken; while in higher altitude area or sunny slope,thinning shrub species in patch form would be better for L.chinensis populations block renovating.The fostering area for L.chinensis populations should be suit to the area with the highest clustering intensity of populations.

Key words: Larix chinensis population, Spatial distribution, Clustering pattern type, Scale

CLC Number:

S718

ZHANG Wenhui, WANG Yanping, KANG Yongxiang, LIU Xiangjun . Spatial distribution pattern of Larix chinensis population in Taibai Mt[J]. Chinese Journal of Applied Ecology, 2005, 16(2): 207-212.

References

[1] Cai F(蔡飞),Song Y-C(宋永昌). 1997. Studies on the population structure and its dynamics of Schima supreba Mt. Wuyi. Acta Phytoecol Sin (植物生态学报), 21(2):138～148(in Chinese)
[2] Chen C-G (陈存根), Peng H (彭鸿). 1994. The phytocoenological features and classification of the forests of Larix chinensis in Qinling range. Sci Silvae Sin (林业科学), 30(6):487～496(in Chinese)
[3] Elliott JM. 1973. Some Methods for the Statistical Analysis of Samples of Benthic Invertebrates. Freshwater Association, Amble side,Westmoreland. Great Britain:Scientific Publication. No. 25.34～88
[4] Forestry Bureau of Shaanxi Province. 1989. The Papers of Synthetic Exploration in Taibai Mountain Protection Zone. Xi'an:Shaanxi Normal University Press. (in Chinese)
[5] Greig-Smith P. 1983. Quantitative Plant Ecology. 3rd ed. Oxford:Blackwell. 68～97.
[6] Hou X-Y(候向阳), Han J-X(韩进轩). 1997. Simulation analysis of spatial patterns of main species in the Korean-pine broad-leaved forest in Changbai Mountain. Acta Phytoecol Sin (植物生态学报),21 (3):242～249 (in Chinese)
[7] Kershaw KA, Loony JHH. 1985. Quantitative and Dynamic Plant Ecology 3rd ed. London:Edward Arnold. 282～312
[8] Larcher W. 1995. Physiological Plant Ecology. 3rd ed. New York,Berlin, Heidelberg, Aufl:Springer-Verlag. 279～448
[9] Lei M-D(雷明德). 1999. Shaanxi Flora. Beijing:Science Press. 55～145(in Chinese)
[10] Ludwig J, Reynolds J. 1990. Trans. Li Y-Z(李育中), Wang W (王炜), Pei H (裴浩). 1997. Statistical Ecology. Huhhot:Inner Mongolia University Press. 6～25 (in Chinese)
[11] Manuel CM. 2000. Ecology:Concepts and Application. Beijing:Science Press. 162～226
[12] Pielou EC. 1977.Trans Lu Z-Y(卢泽愚). 1988. Mathematical Ecology. 2nd ed. Beijing:Science Press. 119～193 (in Chinese)
[13] Legendre P, Fortin MJ. 1989. Spatial pattern and ecological analysis. Vegetatio, 80:107～138
[14] Quinn JF, Dunham AE. 1983. On hypothesis testing in ecology and evolution. Amer Nat, 122:602～617
[15] Dong M(董明),Wang Y-F(王义凤),Kong F-Z(孔繁志).1996. Standard Methods for Observationand Analysis in Chinese Ecosystem Research Network, Survey, Observation and Analysis of Terrestrial Biocommunities. Beijing:Chin Standards Press. 20～41(in Chinese)
[16] Xie Z-Q(谢宗强), Chen W-L(陈伟烈). 1999. Spatial distribution pattern of Cathaya argyrophylla population. Acta Bot Sin (植物学报), 41 (1):95～101 (in Chinese)
[17] Yan G-Q(阎桂琴), Zhao G-F(赵桂芳), Hu Z-H(胡正海). 2001.The study on Larix chinensis community characteristics and species diversity in Mts Qinling. Acta Bot Bor-Occid Sin (西北植物学报), 21 (3):497～506(in Chinese)
[18] Yan G-Q(阎桂琴).2001.Study on the community and population ecology of Larix chinensis in Qinling range. Chin J Appl Ecol (应用生态学报), 12 (6):824～828 (in Chinese)
[19] Zhang J-T(张金屯). 1995. Mathematical Ecology Method of Plantation. Beijing:China Science and Technology Press. 123～177 (in Chinese)
[20] Zhang W-H (张文辉). 1998. The Population Ecology on Adenophora lobophylla. Haerbin:Northeast Forestry University Press. 56～157(in Chinese)