| 摘要: |
| 【目的】探讨采用模拟计算法确定合理年采伐量后的实施效果，为实现森林资源的可持续经营提供支持。【方法】以福建某林业企业经营的杉木、马尾松人工用材林为研究对象，通过模拟计算法模拟林分的采伐和生长，以轮伐期期末成熟林和过熟林的面积占42.8%为控制目标，不断设定年采伐量使一个轮伐期期末的成熟林和过熟林的面积达到设定目标。在此基础上，利用重置成本法、收获现值法、市场价倒算法测算各龄组价值，并通过对比模拟前后的价值分析模拟计算法对价值量的影响。【结果】在一定控制目标下，采用模拟计算得到杉木、马尾松的合理年采伐面积分别为18.7和21.6 hm2，根据单位面积蓄积量得到合理采伐量分别为351.5和989.3 m3，在此采伐量下林分各龄组分布结构较为均匀、稳定、合理。利用各评估方法测算林分价值量，对比分析各年份的林分价值量，显示模拟计算法在确定合理采伐量的同时，有效提高了林分的价值量。【结论】以轮伐期末成熟林和过熟林面积占 42.8%为控制目标，轮伐期期末林分各龄组结构分布均匀，林分价值量提高，有利于森林资源的可持续经营。 |
| 关键词: 模拟计算法 森林资源 采伐量 资产评估 林分价值量 |
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| 基金项目:福建省自然科学基金项目（B0010019）；武夷学院科研基金项目（XD201402） |
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| Determination of felling amount and effects on value based on a simulation method |
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HUA Weiping,JIANG Xidian,QIU Tian,et al
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| Abstract: |
| 【Objective】This paper used a simulation method for determining a reasonable annual felling amount and the effects on value to achieve the sustainable management of forest resources.【Method】Taking timber forests of Cunninghamia lanceolata and Pinus massoniana managed by a forestry company in Fujian as example,a simulation method was used to simulate the stand harvesting and growth.With the ratio of the final mature forest and over mature forest area of 42.8% as control target,annual felling volume was changed independently.On this basis,replacement cost method,present earning value method and market value method were used to calculate forest value.Then,the effects of simulation method on value were analyzed.【Result】With the certain control objective,the annual cutting amounts of Cunninghamia lanceolata and Pinus massoniana were 18.7 and 21.6 hm2.According to volume of per unit area,the reasonable cutting amounts were 351.5 and 989.3 m3.The distribution of each age group was uniform,stable and reasonable.Based on the assessment of stand volume and comparative analysis of forest value of all years,the calculation method also increased the amount of forest value. 【Conclusion】With the control target of 42.8%,the structure distribution of each age group was uniform,the stand value was increased,and it benefited the sustainable management of forest resources. |
| Key words: simulation method forest resources cutting amount asset assessment forest value |
