
Analyses of Cerasus serrulata population structure and point patterns in Yuntai Mountain, Jiangsu
PENG Zhiqi, DONG Peng, ZHU Hong, ZHU Shuxia, DONG Jingjing, ZHONG Yuqian, ZHAI Feifei, ZHENG Aichun, WANG Xianrong, YI Xiangui
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2021, Vol. 45 ›› Issue (4) : 167-176.
Analyses of Cerasus serrulata population structure and point patterns in Yuntai Mountain, Jiangsu
【Objective】The aim of this study is to understand, analyze and master the structural feature, distribution patterns, species diversity and relationships of Cerasus serrulata in natural populations on the east hillside of Yuntai Mountain, Lianyungang, which will provide a theoretical basis for the protection and utilization of germplasm resources of this landscaping tree species.【Method】Based on the survey data of the 1 hm 2 fixed sample plot in the Yuntai Mountain Provincial Nature Reserve in Jiangsu Province, we explored the age structure of the C. serrulata population, and drew a static life table and survival curve to forecast time series and analyze point patterns.【Result】① In this sample, Quercus serrata and C. serrulata, which are the main building species of the community, have the highest important values, but it is not common to see the latter as one of the dominant species in the community. The diameter structure of its population is “expanding,” and the population of its younger class is relatively abundant. ② The static life table shows that the average individual viability of C. serrulata decreases with the increasing age class and that the survival curve of C. serrulata is closer to Deevey-Ⅱ. ③ The time prediction of the population age class shows that the number of individuals in each age class of the C. serrulata population will gradually increase, and that the population can naturally renew in the next two, four and six periods of age class. ④ There is a large difference in the plant density at each age group of the C. serrulata population and the whole is either randomly distributed or clustered. 【Conclusion】Fagaceae is one of the most dominant species in warm temperate broadleaved deciduous forests, both Celtis sinensis and Pistacia chinensis are also common dominant species, whereas C. serrulata is not. The population structure of C. serrulata in the Yuntai Mountain is in a stable state with a strong natural regenerative ability. Because it has played an essential role in the zonal vegetation restoration and scenic forest construction, while its protection should be strengthened. At the same time, this study also shows that revealing the structure and quantitative characteristics of special populations through the above-mentioned methods has an important theoretical value and practical significance for the protection and management of special communities.
Cerasus serrulata / population age structure / static life table / survival curve / time series prediction / point pattern analysis / Yuntai Mountain,Jiangsu Province
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