Estimation of self-thinning line for larch plantation based on extreme values

doi:10.3969/j.issn.1000-2006.2014.05.003

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (05): 11-14.doi: 10.3969/j.issn.1000-2006.2014.05.003

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Estimation of self-thinning line for larch plantation based on extreme values

DENG Wenping, LI Fengri^*

College of Science,Northeast Forestry University,Harbin 150040,China

Online:2014-10-31 Published:2014-10-31

Abstract

Abstract: Due to the existence of severe interference on real stands, little stands reach its full stocking. Methods from statistics of extreme values were used to study the self-thinning line for larch(Larix olgensis Henry)plantation. After determining a threshold, the generalized Pareto distribution function was used to fit the threshold excesses. The extreme maximum number of stem that a stand can support was abtained. The relationship between the maximum number and diameter revealed the self-thinning line through analysis of regression.Using 1 511 pots data collected from several area of Heilongjiang as an example. The self-thinning line for larch plantation was obtained. Results obtained in this paper were consist with the Reineke equation.

CLC Number:

S757

DENG Wenping, LI Fengri. Estimation of self-thinning line for larch plantation based on extreme values[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2014, 38(05): 11-14.

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Estimation of self-thinning line for larch plantation based on extreme values

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