摘要
选择Ｒｉｃｈａｒｄｓ方程作为杉木优势木高生长的基本模型，用参数预估法建立多形地位指数曲线，并用改进单纯形法对整体精度作了进一步的优化．在此基础上，与标准差调整法，差分方程法建立的同形曲线作了对比．结果表明：地位指数多形曲线明显优于同形曲线，而二种方法建立的同形曲线精度差别不大．
The authors choes Richards equation as basic model of height growth for dominant Chinese fir tree, then built multi-shape site index curve by means of parameter estimation method, and further optimized it by means of modified simplex method. In addition, compared it with standard difference regulating method and difference equation method, the results showed that the multi-shape site index curve was superior to same-shape curve during tabulating site index curve table.
出处
《福建林学院学报》
CSCD
1996年第2期130-134,共5页
Journal of Fujian College of Forestry
基金
福建省自然科学基金
关键词
杉木
地位指数
单纯形法
Chinese fir, site index, Rechards equation, modified simplex method
