2018 1st International Conference on Environment Prevention and Pollution Control Technology | |
Numerical analysis of inter-specific relationships in Arbor layer of Pinus syluestriformis community in Changbai Mountain area, China | |
生态环境科学 | |
Jin, Hui^1 ; Zhao, Ying^1 ; Liu, Lijie^1 ; Dai, Yuhong^1 ; Yin, Hang^1 ; Jia, Xiang^1 ; Wang, Chao^1 ; Ma, Hongyu^1 ; Xiao, Ying^1 | |
Jilin Provincial Joint Key Laboratory of Changbai Mountain Biocoenosie An Biodiversity, Changbaishan Academy of Science, Yanbian, Jilin | |
133613, China^1 | |
关键词: Association coefficient; Changbai Mountains; Contingency table; Degree of association; Environmental damage; Negative correlation; Spearman rank correlation; Variance analysis; | |
Others : https://iopscience.iop.org/article/10.1088/1755-1315/199/2/022060/pdf DOI : 10.1088/1755-1315/199/2/022060 |
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学科分类:环境科学(综合) | |
来源: IOP | |
【 摘 要 】
Pinus syluestriformis is a rare and endemic tree species in Changbai Mountain, China's national first-class protected plant. In recent years, with the increase in population and environmental damage, the number is becoming less and reaching the edge of extinction. The interspecific association characteristics of dominant species in Arbor layer of Pinus syluestriformis community were analyzed by using 2×2 contingency table, variance analysis, association coefficient, chi-square test, and Spearman rank correlation test. The results showed that: (1)The overall relevance showed negative correlation. Both AC and PCC were used to describe the degree of association between species, and they had high similarities. In the pure forest, Pinus syluestriformis and the main arbor species were positively correlated, but did not reach a significant level.In the scattered forest, the correlations between Pinus syluestriformis and the main arbor species were positively correlated with only Acer barbinerve, Albizia kalkora, and Tilia amurensis, and negatively correlated with other species. (2)In the pure forest, Spearman rank correlation analysis showed 72 pairs were positively correlated. In the scattered forest, 14 dominant species with high important values in the community were selected for analysis. Spearman rank correlation coefficient reflected that 23 pairs were positively correlated. (3) The results of the tests are positive and negative correlation ratio
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