杨树速生丰产林经济成熟与经济效益分析  

ANALYSIS ON THE ECONOMIC MATURE AGE AND ECONOMIC BENEFIT OF FAST-GROWING AND HIGH-YIELD PLANTATION OF POPLAR

作　　者：丁凤梅[1] 鲁法典[1] 侯占勇[1] 高岩[1] 卢克芝[2] 

机构地区：[1]山东农业大学林学院,山东泰安271018 [2]山东农业大学图书馆,山东泰安271018

出　　处：《山东农业大学学报（自然科学版）》2008年第2期233-238,250,共7页Journal of Shandong Agricultural University：Natural Science Edition

摘　　要：利用经济成熟龄的主要经济指标(净现值、内部收益率、土地期望价、效益成本比)和调查收集的杨树生长预测表的数据,对杨树速生丰产林经济成熟龄与经济效益进行了研究,结果表明:在同一经营条件下,由经济效益主成分分析得到,密度为330株/hm2的欧美类杨经济效益最优;在现行的经济环境下,利率5.22%,根据以上经济指标的计算结果得到,密度是495株/hm2的欧美类杨树速生丰产林的经济成熟龄定为9 a;随着利率的增大杨树速生丰产林的经济成熟龄阶段性提前,而经济效益逐渐减小;木材价格对经济成熟起反向作用,木材价格上升时经济成熟龄延后,且经济收益增加;价格下降时经济成熟龄提前,且经济收益减少。The article studied the influence on the economic mature age and economic benefit of fast - growing and high -yield plantation of poplar by change of discount rate based on the main economic indexes（ PNW ,IRR, Bu, RBC） and the investigated list of poplar growth prediction in the internation. The result showed that the economic benefit of 330 tree/hm^2 density of poplar is best through principal component analysis of economic benefit under common management condition; when discount rate is 5.22%, the economic mature age of the poplar fast - growing and high - yield plantation is 9 old year on the condition of present economic environment. The economic mature age advanced with the increasing of discount rate. But the economic benefit of fast - growing and high - yield plantation is gradually decreasing. The economic mature age is smaller in the increase of wood price than that in decrease of wood price, but the economic benefit are increasing as wood price increasing.

关 键 词：速生丰产林 利率 经济效益 经济成熟龄 主成分分析 

分 类 号：S792.11[农业科学—林木遗传育种]