杨树生长量及经济成熟龄研究

Study of volume increase and economic mature age of Populus

通过对宿迁市杨树林生长量及轮伐期的专项调查,分析杨树速丰林和其它杨树林的生长表现,研究其总生长量及总平均年生长量。根据调查收集的杨树速丰林样地林木生长基本情况的实测数据,通过分析杨树林的造林成本、各项抚育和经营管理成本(土地租金及资金占用成本、抚育工本等)与效益情况,利用经济成熟的主要经济指标(财务净现值、内部收益率等),综合判定杨树速丰林的经济成熟龄和轮伐期。

tudy from fast-growing and high-yield plantation and other Populus’ growth situation through the ad hoc survey of the volume increase and rotation of the Populus in Suqian.The total volume increase and the total average increase per year were calculated.By analyzing the plant cost,nurture cost including the rent,the cost fund of possession and the benefit,the major economic indicator such as FNPV and FIRR have been summed up.The economic mature age and the rotation have been integrative voted.