• 研究报告 •

山西七里峪白桦种群生活史特征与点格局分析

1. （山西师范大学生命科学学院， 山西临汾 041004）
• 出版日期:2014-09-10 发布日期:2014-09-10

Life history characteristics and point pattern of Betula platyphylla population in Qiliyu region, Shanxi, China.

JIN Jing-jing, ZHANG Qin-di, BI Run-cheng**

1. (College of Life Science, Shanxi Normal University, Linfen 041004, Shanxi, China)
• Online:2014-09-10 Published:2014-09-10

Abstract: In order to understand the life history characteristics and the pattern of the spatial distribution of Betula platyphylla population in the Qiliyu region of Shanxi Province, the life table characteristics, age structure, survival curve and spatial distribution of the B. platyphylla population were studied. The results showed that, 1) the age structure of the B. platyphylla population of the Qiliyu region followed a spindle shape, which indicated that the population was declining; 2) the survivorship curve of B. platyphylla population approximated the type of the Deevey I; 3) selfthinning was common in this population, because of the high interspecific competition for space and sunlight, which led to a higher death rate in age class III; 4) the spatial distribution in different growth periods was clumped or random. To be specific, the distribution pattern tended to be clumped when interspecific competition was not intense, and the clumping distribution became more significant with age increase. Based on our findings, we concluded the spatial patterns of the B. platyphylla population in this area of uniform environment conditions were controlled by biotic interactions and local ecological characteristics.