闽东地区木荷人工林标准表的编制

利用标准地材料,以林分每公顷胸高断面积为因变量,林分平均高为自变量,采用最小二乘法拟合多个方程,经分析对比选择合适的方程作为编制木荷人工林标准表的数学模型。在此基础上,应用有约束条件的改进单纯形法建立疏密度1.0的标准林分每公顷胸高断面积模型,配合形数模型,按蓄积三要素计算疏密度1.0的林分每公顷蓄积量,据此编制了木荷人工林标准表。可为森林资源清查确定木荷人工林的蓄积量和疏密度提供科学依据。

Plantations Standard Form Prepare of Schima.superba in Eastern Fujian Province

The standard land materials were used to prepare Schima superba plantation stand form by taking appropriate equation as maths model with dependent variable of height,sectional area of standing per ha.,standing average height as independent variable,simulating many equations by least square method.On the basis of above,a constraints improvement simplex method was applied to establish standing height stand sectional area model with the standard sparse density of 1.0 per hectare,in combine with figurate number model,according to 3 stocking elements,standing stocking with sparse density of 1.0 per hectare was calculated to prepare Schima superba plantation standing form.Which could provide scientific basis for determing Schima superba plantation stocking and sparse density for forest resource check.