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[1]LIN Yu-yang,WANG De-xiang,LEI Rui-de,et al.Study on the Characteristics of Pinus tabulaeformis Carr. Population on the Western Section of Qinling Mountains[J].Research of Soil and Water Conservation,2009,16(04):180-185.

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Study on the Characteristics of Pinus tabulaeformis Carr. Population on the Western Section of Qinling Mountains

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 04 Page number: 180-185 Column: Public date: 2009-08-20

Title:: Study on the Characteristics of Pinus tabulaeformis Carr. Population on the Western Section of Qinling Mountains

Author(s):: LIN Yu-yang¹, WANG De-xiang², LEI Rui-de², YONG Xiao-hua¹; 1. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China

Keywords:: population statistics; life table; survival analysis; spectral analysis; Pinus tabulaeformis Carr.

CLC:: S718.542

DOI:: -

Abstract:: Based on the investigation data on Pinus tabulaeformis Carr. population in the western section of Qinling Mountains, the theory of survival analysis and the method of spectral analysis, the static life table, the curves of survival and mortality rate were drawn in this paper. Meanwhile, authors also analyzed the population dynamics by the method of spectral analysis. The results showed that the curve of survival generally tended to the Deevey Ⅲ, and the competition would lead to self-thinning of the population by different degree. The fluctuation period of mortality was 15 year in all aspects and the temporal pattern was same. However, spectral analysis showed the fluctuation period of survival was different between sunny and shady slope (Sunny>Shady), and the minor period existed in the main period. In conclusion, the structure of Pinus tabulaeformis Carr. population could keep stable through the efficient resource allocation adjusted by interior mechanism.

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