摘要
利用长白落叶松人工林２００块临时标准地、３１块间伐试验标准地、２块皆伐标准地、４００株解析木的数据，综合运用先进的林学理论、数学方法、市场经济理论和计算机技术，系统分析并拟合、组装基础理论研究成果，如全林分生长模型、动态规划模型等模型群，建立林分经营模型微机系统，并以净现值和内部收益率为经济评价方法确定出５种优化栽培模式。研究结果表明：栽培模式的经济效益与地位指数成正比，造林密度３３００～４４００株／ｈｍ２能取得较高的经济效益，轮伐期１８～３４ａ，净现值２５００～５０００元／ｈｍ２，内部收益率１５％～２０％。
Using 200 temporary plots, 31 permanent plots of thinning, 2 clear cutting plots and 400 stem analysis trees of Larix olgensis plantations, based on the advanced forestry theory, mathematical method, market economic theory and computer techniques, the whole stand growth models, dynamic programming models, the microcomputer system of stand silviculture models were set up. Using the present net worth and the internal rate of return as economic evaluating method, the 5 optimal silvicultural patterns were selected. The results show that the economic efficiency is in direct proportion to the site index. The initial density of 3300～4400 per hectare can get the higher economic efficiency. The rotation is 18～34 years. The present net worth is 2500～5000 yuan (RMB) per hectare. The internal rate of return is 15%～20%.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1998年第3期20-24,共5页
Journal of Northeast Forestry University
基金
国家"八五"攻关课题
关键词
长白落叶松
人工林
建筑材
栽培模式
林分生长模型
Larix olgensis
Plantation
Building woods
Silvicultural patterns
Stand growth models
