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  • 卢婵江,周晓果,黄冰川,温远光,朱宏光,莫继有,左花,严理,兰俊.不同轮伐期巨尾桉人工林的经济效益分析[J].广西科学,2018,25(2):158-162.    [点击复制]
  • LU Chanjiang,ZHOU Xiaoguo,HUANG Bingchuan,WEN Yuanguang,ZHU Hongguang,MO Jiyou,ZUO Hua,YAN Li,LAN Jun.Economic Benefit Analysis of Eucalyptus grandis×E.urophylla Plantations in Difference Rotations[J].Guangxi Sciences,2018,25(2):158-162.   [点击复制]
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不同轮伐期巨尾桉人工林的经济效益分析
卢婵江1, 周晓果1, 黄冰川2, 温远光1, 朱宏光1, 莫继有3, 左花1, 严理1, 兰俊3
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(1.广西大学林学院, 广西森林生态与保育重点实验室培育基地, 广西南宁 530004;2.广西德保县科技情报研究所, 广西百色 533700;3.广西国有东门林场, 广西扶绥 532100)
摘要:
[目的]探讨不同轮伐期对人工林经济效益的影响,为从经济视角科学确定人工林的合理轮伐期提供理论依据。[方法]以短(7 a)、中(13 a)、长(21 a)轮伐期的南亚热带巨尾桉人工林为研究对象,对不同轮伐期巨尾桉人工林的蓄积量(Stand volume,SV)、营林成本、净现值(Net present value,NPV)和内部收益率(Internal rate of return,IRR)进行分析,揭示不同轮伐期对经济效益的影响。[结果]随着轮伐期的延长,巨尾桉人工林的蓄积量持续增长,7 a、13 a、21 a轮伐期的蓄积量分别为144.95 m3/hm2、346.97 m3/hm2、553.69 m3/hm2。随着轮伐期的延长,巨尾桉人工林净现值不断增加,在12 a时达到最高值(30 297.61元/hm2),之后逐渐降低,7 a、21 a轮伐期的净现值分别为17 239.86元/hm2、22 008.59元/hm2。内部收益率在13 a开始趋近峰值(53.32%),明显高于7 a时的39.29%。[结论]在南亚热带,巨尾桉人工林的轮伐期确定在13 a左右较为适宜,既可实现经济效益最大化,又可大幅提升蓄积量。
关键词:  轮伐期  巨尾桉人工林  蓄积量  营林成本  净现值  内部收益率
DOI:10.13656/j.cnki.gxkx.20180427.004
投稿时间:2018-01-29
基金项目:国家自然科学基金项目(31460121),广西高等学校重大科研项目(201201ZD001),广西森林生态与保育重点实验室培育基地开放课题(QZKFKT2017-01),广西林业厅科研项目(桂林科字[2009]第八号)和广西研究生教育创新计划项目(YCBZ2015016)资助
Economic Benefit Analysis of Eucalyptus grandis×E.urophylla Plantations in Difference Rotations
LU Chanjiang1, ZHOU Xiaoguo1, HUANG Bingchuan2, WEN Yuanguang1, ZHU Hongguang1, MO Jiyou3, ZUO Hua1, YAN Li1, LAN Jun3
(1.Guangxi Key Laboratory of Forest Ecology and Conservation, Forestry College, Guangxi University, Nanning, Guangxi, 530004, China;2.Institute of Scientific and Technical Information of Debao County, Baise, Guangxi, 533700, China;3.Dongmen State Forest Farm of Guangxi, Fusui, Guangxi, 532100, China)
Abstract:
[Objective] The effects of different rational rotations on the economic benefits of plantation forests were discussed to provide a theoretical foundation for scientifically determining the reasonable rotation period of plantations from an economic perspective.[Methods] The short-term (7 a), medium (13 a), and long (21 a) rotations of the South Asian subtropical Eucalyptus grandis×E.urophylla plantations were studied.The stand volume (SV), establishment and management cost, net present value (NPV) and internal rate of return (IRR) of the Eucalyptus grandis×E.urophylla plantations at different rotations were analyzed to reveal the impact of different rotation periods on economic efficiency.[Results] With the extension of the rotation period, the stand volume of E.urophylla plantations sustainably increased, and the stand volume at the turn of 7 a, 13 a, and 21 a were 144.95 m3/hm2, 346.97 m3/hm2, and 553.69 m3/hm2, respectively.With the extension of the rotation period, the net present value also increased continuously, reached the highest value 30 297.61 Yuan/hm2 at 12 a, and then gradually decreased.The net present value of the rotation period of 7 a and 21 a were 17 239.86 Yuan/hm2 and 22 008.59 Yuan/hm2 respectively.On the other hand, internal rate of return approached peak at 13 a (53.32%) which was significantly higher than that in 7 a (39.29%).[Conclusion] In the South Asian subtropics, the rotation period of the Eucalyptus grandis×E.urophylla plantations was determined to be appropriate around 13 years, which could maximize the economic benefits and greatly increased the stand quality.
Key words:  rotation  Eucalyptus grandis×E.urophylla plantations  stand volume  management cost  net present value  internal rate of return

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