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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 |
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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) |
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| 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 |
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| Economic Benefit Analysis of Eucalyptus grandis×E.urophylla Plantations in Difference Rotations |
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LU Chanjiang1, ZHOU Xiaoguo1, HUANG Bingchuan2, WEN Yuanguang1, ZHU Hongguang1, MO Jiyou3, ZUO Hua1, YAN Li1, LAN Jun3
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| (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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