摘要
应用99块湿地松人工林标准地调查资料,以林分年龄、立地指数为自变量,利用Richards模型拟合各林分因子(直径、树高、蓄积等)生产过程;采用非线性麦夸特迭代求解法,确定各林分因子Richards模型参数,并进行模型检验和误差分析,在此基础上依据各林分因子生长模型编制16指数级湿地松人工林经验收获表。
The data of 99 standard plots for Pinus elliottii plantations were adopted to describe the growth process of the stand factors （ diameter, tree height, volume, etc. ） with Riehards equation, taken stand age and site index as independent variable. The parameters of Richards equation were determined by using nonlinear Marquardt computation, at the same time, the model and its error were tested and analysed respectively. Based on equations of the stand, the 16 index level empirical yield table of Pinus elliottii plantation was compiled.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2007年第2期235-238,共4页
Journal of Anhui Agricultural University
基金
林业厅项目(林丰办[2003]46号)
安徽省自然基金项目(05023061)部分内容
关键词
湿地松
RICHARDS方程
经验收获表
编制
Pinus elliottii
Richards equation
empirical yield table
compiling growth
