Based on the whole stand model of Daqingshan, using simulation method, the impact of measurement error of number of trees per hectare, average diameter, dominant height, average height and form height on the whole sta...Based on the whole stand model of Daqingshan, using simulation method, the impact of measurement error of number of trees per hectare, average diameter, dominant height, average height and form height on the whole stand model were studied. The result indicated that, beting estimated by least square method, basal area model, average diameter model, number of trees per hectare model had obvious biases, but dominant height model, average height model and form height model had no clear biases.展开更多
为弥补黄山松林分货币收获表空白,以黄山松为研究对象,通过探讨林分货币收获表编制的基本原理和方法,构建了基于哑变量的地位指数模型及与立地质量有关的标准蓄积量模型。选用了L-P R M法作为林分直径分布概率预估技术,结合实测数据,建...为弥补黄山松林分货币收获表空白,以黄山松为研究对象,通过探讨林分货币收获表编制的基本原理和方法,构建了基于哑变量的地位指数模型及与立地质量有关的标准蓄积量模型。选用了L-P R M法作为林分直径分布概率预估技术,结合实测数据,建立了全林分模型和林分出材率模型,编制了黄山松标准货币收获表,对提高黄山松经营决策的科学性具有重要的实践意义。展开更多
文摘Based on the whole stand model of Daqingshan, using simulation method, the impact of measurement error of number of trees per hectare, average diameter, dominant height, average height and form height on the whole stand model were studied. The result indicated that, beting estimated by least square method, basal area model, average diameter model, number of trees per hectare model had obvious biases, but dominant height model, average height model and form height model had no clear biases.
文摘为弥补黄山松林分货币收获表空白,以黄山松为研究对象,通过探讨林分货币收获表编制的基本原理和方法,构建了基于哑变量的地位指数模型及与立地质量有关的标准蓄积量模型。选用了L-P R M法作为林分直径分布概率预估技术,结合实测数据,建立了全林分模型和林分出材率模型,编制了黄山松标准货币收获表,对提高黄山松经营决策的科学性具有重要的实践意义。
