期刊论文

Li, J.-P.

中文

北京林业大学学报

1000-1522

2015

37

3

61-68

10.13332/j.1000-1522.20140310

(2012BAD22B0505):“十二五冶国家科技支撑计划项目 (CX2014B341):湖南省研究生科研创新项目 (CX2014B24):中南林业科技大学研究生科技创新基金项目

本校为第一且通讯机构

以福寿山林场25年生的杉木生态公益林为研究对象,通过分析林木竞争指数与胸径生长因子的相关关系,得出二者为负相关,从而确定加权Voronoi图的权重为胸径倒数(W),借助Arcgis软件里的加权Voronoi图工具,通过加权Voronoi图的方法来确定竞争单元,提出基于加权Voronoi图的W_V_Hegyi竞争指数,最后将W_V_Hegyi竞争指数与Hegyi、V_Hegyi竞争指数进行对比分析,结果表明:1) 3种竞争指数与胸径相关性强弱排序为:W_V_ Hegyi>V_Hegyi>Hegyi;2) 3种竞争指数与胸径服从幂函数关系,曲线拟合度排序为:W_V_Hegyi> V_Hegyi> Hegyi;3)样地竞争指数平均值排序均为:V_Hegyi>W_V_Hegyi> Hegyi。通过以上比较分析证明,W_...

We took the 25-year-old Cunninghamia lanceolata ecological forest in Fushoushan National Forest Park of Hunan Province as the research object. Analysis revealed that there was a negative correlation between competition index and the diameter at breast height (DBH). Based on this, it was confirmed that the weight of weighted Voronoi diagram was the reciprocal of DBH. Competition unit was determined by using weighted Voronoi diagram tool in Arcgis software, and the W_V_Hegyi competition index was proposed based on weighted Voronoi diagram. Finall...