基于林木综合竞争的林分生长量分配模型

doi:10.11707/j.1001-7488.20131009

Abstract

Abstract:

This paper studied the stand distribution model in terms of competition which could distribute the overall growth increment of a stand to each individual trees of the stand. Data, collected from a Chinese fir plantation in Huangfengqiao Forest Farm in Hunan province, were used to develop a stand distribution model with Open Comparison Model f_O, Simple Competition Index Model f_H, and Competition Pressure Index Model f_CSI, then propounded a new model—Competition Index Model f_C_i=1/(af_Oi+bf_Hi+cf_CSI_i). After eliminated outliers, f_C was used as a parameter to propound a Stand Growth Distribution Model to distribute the overall growth increment of stand to each individual trees in the stand, and the model is G_i=G_Total×f_Ci/. Regression analysis obtained a=5.416 081 713, b=1.037 485 025, c=0.157 524 494, with standard error of 0.179 128 42, and R² of 0.966 704 535. Ten sample plots of the artificial stand were used to verify the model, and it was found that the model's precision was the best for Chinese fir artificial stands, was good for the Liriodendron chinense artificial stands, and was the worst for the mixed forest. Thus, the model is a good empirical model suitable for the artificial stand.

Key words: competition, stand comprehensive competition model, stand growth distribution model

CLC Number:

S758.52

Jiang Xian, Zhang Huaiqing, Ju Hongbo, Song Jiehua, Qin Yangping, Wu Shulei. Stand Growth Distribution Model Based on Individual Tree’s Integrated Competition[J]. Scientia Silvae Sinicae, 2013, 49(10): 54-57.

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Stand Growth Distribution Model Based on Individual Tree’s Integrated Competition

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