摘要
充分利用山西省2010年森林资源清查本底数据和现地调研核实数据,分析全省疏林地优势树种油松的密度与林分生长指标的关系,利用SPSS 17.0软件和Excel 2013分别对油松的平均胸径、平均树高、平均材积、蓄积量和密度进行相关性分析和回归分析,并进行曲线拟合,确定适宜的曲线模型。结果表明:平均胸径和平均材积均随密度的增大而减小;平均树高和蓄积量均随密度的增大呈先增大后稳定的趋势。
This paper made full use of data of the forest resources in 2010 in Shanxi Province and field investigation,and analyzed the relationship between the density and growth index of Pinus tabuliformis Carrière,doing the correlation analysis and regression analysis between average DBH,average height,average volume,stand volume and density of Pinus tabuliformis Carrière using SPSS 17. 0 software and Excel 2013 to do the curve fitting and find the corresponding curve of the model. Result showed that average DBH and average volume decreased with the increase of density; average height and stand volume presented the trend of increasing firstly and after stable with the increase of density.
出处
《山西林业科技》
2016年第1期5-7,22,共4页
Shanxi Forestry Science and Technology
基金
山西省林业厅科技创新项目(山西疏林地空间分布格局与提质增效关键技术研究)
关键词
密度
胸径
树高
材积
蓄积量
Tree density
DBH
Height
Volume
Stand volume
