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为了克服森林经济成熟龄研究中固定标准地数量少,设置年限短、资料相对贫乏和基础数据可靠性较低等缺点,本文采用来源丰富、数据可靠的间伐(或主伐)作业标准地调查表为原材料,以动态分析评价经济活动的净现值(NPV)为指标,从径级分布这个最基本的数据算起,对隆化县茅荆坝林场阴坡厚土人工油松林进行了分析,力图精确,动态地反映林地的径级分布、材种(类)出材量、价格等随年龄的变化,以确定适宜的经济成熟龄。结果表明,茅荆坝阴坡厚土人工油松林的净现值最大的年龄是27a,即为其经济成熟龄。
In order to overcome the shortcomings of a small number of fixed standards, short set-up years, relatively poor data and low reliability of basic data in the study of mature forest age, the questionnaire of the standard thinning (or cutting) operation with rich sources and reliable data was Raw materials, dynamic analysis and evaluation of NPV as an indicator of economic activity, from the diameter distribution of the most basic data from the calculation, the Maojingba Forest Farm in shanghai Huaxian thick slope of artificial pine forests were analyzed in an attempt Accurately and dynamically reflect the diameter distribution of forest land, the output of wood species (class), the price and other changes with age to determine the appropriate economic maturity age. The results showed that the maximum net present value of the artificial pale-pine forests in the shady slope of Maojingba was 27a, which is the economic maturity age.