百年柿树经济系数模型研建及应用

doi:10.11707/j.1001-7488.20141019

林业科学 ›› 2014, Vol. 50 ›› Issue (10): 140-145.doi: 10.11707/j.1001-7488.20141019

百年柿树经济系数模型研建及应用

巩文¹, 巩垠熙², 沈晓燕¹

1. 甘肃林业职业技术学院天水 741020;
2. 国家测绘地理信息局第一航测遥感院西安 710054

收稿日期:2014-01-11 修回日期:2014-06-03 出版日期:2014-10-25 发布日期:2014-11-12
通讯作者: 巩垠熙

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

Gong Wen¹, Gong Yinxi², Shen Xiaoyan¹

1. Gansu Forestry Technological College Tianshui 741020;
2. The First Institute of Photo-Grammetry and Remote Sensing, State Bureau of Surveying and Mapping Xi'An 710054

Received:2014-01-11 Revised:2014-06-03 Online:2014-10-25 Published:2014-11-12

摘要/Abstract

摘要：

以百年柿树为对象,利用树干解析的生物量及采果记录,研究不同树龄、胸径因子与生物量、产果量及经济系数之间的关系,建立柿树单木生物量、产果量与经济系数的回归模型。结果表明:以年为单位的EC₁(年产果量与累计生物量之比)与树龄及胸径间分别呈双曲线关系;以一个生命周期为单位时,EC₃(累计产果量与累计生物量之比)趋于稳定,其值为0.846,标准偏差为0.036。经济系数在经济林生物量估算及研究中有重要作用,应给于充分的重视。

关键词: 柿树, 经济系数, 模型

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

中图分类号:

S750

巩文, 巩垠熙, 沈晓燕. 百年柿树经济系数模型研建及应用[J]. 林业科学, 2014, 50(10): 140-145.

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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百年柿树经济系数模型研建及应用

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

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