竹山地區孟宗竹林竹材之經濟分析

An Economic Study on Culms of Moso Bamboo(Phyllostachys heterocycla) in Chu-Sun Area

孟宗竹為台灣地區最重要的經濟竹類之一，其竹材具高經濟價值，並有廣泛用途。本研究旨在分析竹山地區孟宗竹之竹材收穫，所蒐集資料的時間自1987 年至1991 年，共計五年的期間，內容包括：竹材之收支分析、竹材收支回歸式建立。所得之結果如下：（1）收入及支出經變方分析的結果均呈顯著，經Duncan 氏多變域分析的結果有關收入方面，連年擇伐、二年擇伐及三年擇伐作業分別如下，72180±10867b， 69850±5568b，132389±27614a（元/ha）；而支出方面則38436±4937b，36467±2290b，70474±15111a（元/ha），故皆以三年擇伐之值為最高。（2）每公頃支數及收入及支出，採回歸式推估的結果相關係數均很高，顯示推估的效果良好，故回歸式可有效的應用於擇伐作業系統。所得之結果將可提供孟宗竹經營之參考。 Moso bamboo is a very important bomboo species in Taiwan. The culms of Moso bamboo have heigh ecomonic values, and they have been widely used in many purposes. We analyed the culm yields of Moso bamboo forest in Chu-Sun area with the records from 1987 to 1991. Selective cutting system is generally practiced by intervals of one to three years ( Using‘A’,‘B’and‘C’treatments to represent intervals of one to three year). Our objects are (1) to analyze the items of income and expenditure for the culm yields (2) to establish the relationship of income and expenditure by regression models. The results are shown as followed: (1) both income and expenditure items are significant by ANOVA, it could devide into two groups by Duncan's multiple range test for both income and expenditure of the culm yields. (In items of income (NT/ha) A, B, C are 72180±10867b, 69850±5568b, 132389±27614a respectly; In items of expenditure (NT/ha) A, B, C are 38436±4937b, 36467±2290b, 70474±15111a, respectly.) (2) about the relationship between income, expenditure and the culm numbers per ha, it has a high correlation coefficient in the regression models. Therefore it could simulate validly in selective cutting systems. The results could provide basic information for Moso bamboo forest management.

Moso bamboo is a very important bomboo species in Taiwan. The culms of Moso bamboo have heigh ecomonic values, and they have been widely used in many purposes. We analyed the culm yields of Moso bamboo forest in Chu-Sun area with the records from 1987 to 1991. Selective cutting system is generally practiced by intervals of one to three years ( Using‘A’,‘B’and‘C’treatments to represent intervals of one to three year). Our objects are (1) to analyze the items of income and expenditure for the culm yields (2) to establish the relationship of income and expenditure by regression models. The results are shown as followed: (1) both income and expenditure items are significant by ANOVA, it could devide into two groups by Duncan's multiple range test for both income and expenditure of the culm yields. (In items of income (NT/ha) A, B, C are 72180±10867b, 69850±5568b, 132389±27614a respectly; In items of expenditure (NT/ha) A, B, C are 38436±4937b, 36467±2290b, 70474±15111a, respectly.) (2) about the relationship between income, expenditure and the culm numbers per ha, it has a high correlation coefficient in the regression models. Therefore it could simulate validly in selective cutting systems. The results could provide basic information for Moso bamboo forest management.