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

DENG Wenping, LI Fengri

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (05) : 11-14.

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

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

  • DENG Wenping, LI Fengri*
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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.

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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 https://doi.org/10.3969/j.issn.1000-2006.2014.05.003

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