• 研究报告 •
JIN Jing-jing, ZHANG Qin-di, BI Run-cheng**
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) selfthinning was common in this population, because of the high interspecific 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 interspecific 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.
travel cost interval analysis,
travel cost model,
zonal travel cost model,
Beijing Olympic Forest Park
靳静静，张钦弟，毕润成**. 山西七里峪白桦种群生活史特征与点格局分析[J]. 生态学杂志.
JIN Jing-jing, ZHANG Qin-di, BI Run-cheng**. Life history characteristics and point pattern of Betula platyphylla population in Qiliyu region, Shanxi, China.[J]. cje.