百年柿树经济系数模型研建及应用

doi:10.11707/j.1001-7488.20141019

Abstract

Abstract:

In this study, over 100-year-old persimmons were used as the object of study. A wood analysis of stems was applied to estimate the biomass, and with the harvest records the relationships between different ages, D.B.H.(Diameter at Breast Height) factors and biomass, fruit production and economic coefficient (Ec) were investigated. Furthermore, the statistics software was applied to establish the regression models of persimmon biomass of individual tree, fruit production and Ec. The results were as follows: 1) with year as the unit, the relationship between EC₁ (the ratio of annual production of fruit and the cumulative biomass) and tree age and D.B.H. was all featured by hyperbola. 2) with a life cycle as the unit, EC₃ (the ratio of the cumulative amount of fruit production and cumulative biomass) tended to be stable, with the value of 0.846 and the standard deviation of 0.036. 3) thus, Ec plays the significant role in biomass estimation and study of economic forests and should give full attention.

Key words: persimmon, economic coefficient, model

CLC Number:

S750

Gong Wen, Gong Yinxi, Shen Xiaoyan. Establishment and Application of Economic Coefficient Model of Over 100-Year-Old Persimmons[J]. Scientia Silvae Sinicae, 2014, 50(10): 140-145.

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Establishment and Application of Economic Coefficient Model of Over 100-Year-Old Persimmons

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