森林与环境学报2017，Vol.37Issue(2)：201-206,6.DOI:10.13324/j.cnki.jfcf.2017.02.012
黄山松单木竞争分析及模型建立
Study on individual tree competition analysis and development model of the Pinus taiwanensis
摘要
Abstract
The paper identified 378 object trees by taking Pinus taiwanensis Hayata as the research object,used the fixed radius method to determine that the radius of circle sample of the object tree and competitive tree was 7.5 m,and got the average competitive intensity under various site quality levels by calculating the competitive intensity associated with distance.By fitting the 10 alternative equations,the competitive intensity relationship was built related to site quality which was CI =fa(I1,I2,I3,I4) +fa(I1,I2,I3,I4)/D,and correlation index was 0.932,absolute relative error absolute value was 7.4％,average system error was 1.1％.These suggested the model was fitted better to be used to describe the competitive intensity of natural P.taiwanensis under different site quality grade.关键词
黄山松/单木竞争/立地质量/哑变量/竞争模型Key words
Pinus taiwanensis Hayata/individual tree competition/site quality/dummy variable/competition model分类
农业科技引用本文复制引用
华伟平,丘甜,江希钿,盖新敏,黄烺增..黄山松单木竞争分析及模型建立[J].森林与环境学报,2017,37(2):201-206,6.基金项目
福建省自然科学基金项目(B0010019) （B0010019）
南平市科技计划项目(N2014Z01). （N2014Z01）
