不同经营目标下的芦头林场杉木人工林经济效益分析  

Analysis of economic returns of Chinese fir plantations in Lutou forest farm under different management objectives

作　　者：卢灵锋 林辉[1] 龙江平 LU Lingfeng;LIN Hui;LONG Jiangping(Central South University of Forestry&Technology,Changsha 410004,Hunan,China)

机构地区：[1]中南林业科技大学,湖南长沙410004

出　　处：《湖南林业科技》2023年第1期63-72,共10页Hunan Forestry Science & Technology

基　　金：湖南省重点研发计划项目(2020NK2051)。

摘　　要：国有林场在森林经营中发挥重要的作用,通过考虑森林生态系统的多目标功能,研究不同经营目标对林场的森林碳汇价值的影响因素,能够充分发挥森林的多种功能和多重价值,有助于完善森林的精准经营理论,体现森林的生态、经济和社会效益。本文以湖南省芦头国有林场杉木人工林为研究对象,基于林地期望价值法、杉木生长模型及木材价格数据,分别以理想核算模式与年核算模式两种碳汇效益核算模式,估算单一木材经营目标、碳汇与木材复合经营目标下的杉木人工林的最佳轮伐期、碳汇成本以及林地期望价值,并分析不同碳价格和贴现率变动的敏感性变化。结果显示:针对芦头林场的杉木人工林的营林条件,在碳汇与木材复合经营目标下,杉木人工林的最佳轮伐期为21 a。仅估算木材收益,年林地期望价值为139 690.04元·hm-2;复合收益的理想核算模式期望值为143 034.33元·hm-2,年核算模式的期望值为155 937.80元·hm-2。与单一木材经营相比,考虑碳汇收益后林地期望价值显著提升,两种核算模式下的最优轮伐期随着碳汇价格的增加而呈延长趋势,与贴现率呈负相关;两种碳核算模式下,杉木人工林最佳轮伐期均未发生变动,年核算模式的林地期望价值比理想核算模式高了9.02%。与单一木材收益相比,理想核算模式与年核算模式分别高了2.39%、11.63%。State-owned forest farms are the main body of forest management. By considering the multi-objective functions of forest ecosystems and studying the effects of different management objectives on the forest carbon sink value of forest farms, we can give full play to the multiple functions and multiple values of forests, which can help improve the theory of precise forest management and reflect the ecological, economic and social benefits of forests. This paper combined the operation data of Lutou state-owned forest in Hunan Province, took Chinese fir plantation as the research object, combined the expected value of forest land method, Chinese fir growth model, and timber price data, and further estimated the optimal rotation period, carbon sink cost, and forest land from the perspective of cost accounting for Chinese fir plantation under the single timber management objective and the composite management objective of carbon sink timber by using two carbon sink accounting models as ideal accounting model and tone year accounting model, and analyzed the sensitivity of different carbon price and discount rate changes. For the forestry conditions of the fir plantation in Lutou forest farm, the optimal rotation period of the fir plantation was 21 a under the composite management objective of carbon sink timber, if only timber revenue was considered, the timber revenue of the Chinese fir plantation in the forestry at 21 a was 139 690.04 RMB·hm-2. The ideal accounting model taking into account compound returns resulted in a profit on forest land of 143 034.33 RMB·hm-2, while the expected value of forest land in the tone year accounting model was 155 937.80 RMB·hm-2. Compared with single timber management, the expected value of forest land increased significantly after considering carbon sink benefits, and the optimal rotation period and carbon sink costs under both accounting models tended to increase with the increase of carbon sink price, and were negatively correlated with the discount rate. The optimal rotation per

关 键 词：芦头林场 碳汇收益 林地期望价值 杉木人工林 

分 类 号：S750[农业科学—森林经理学]