杉木公益林冠幅模型的拟合与评价  

The tree crown width prediction models for Cunning hamia lanceolata ecological forest

作　　者：任珅志 李灏 田育新[1,3] 成其书 邓楠 REN Shenzhi;LI Hao;TIAN Yuxin;CHENG Qishu;DENG Nan(Hunan Academy of Forestry,Changsha 410004,Hunan,China;Forestry Bureau of Gili County,Cili 427000,Hunan,China;Hunan Cili Forest Ecosystem National Positioning Observation and Research Station,Cili 427200,Hunan,China;Hunan Qingyanghu State-owned Forest Farm,Ningxiang 410627,Hunan,China)

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]慈利县林业局,湖南慈利427000 [3]湖南慈利森林生态系统国家定位观测研究站,湖南慈利427200 [4]湖南省青羊湖国有林场,湖南宁乡410627

出　　处：《湖南林业科技》2022年第4期70-73,共4页Hunan Forestry Science & Technology

基　　金：湖南省林业科技创新专项(HNGYL-2019-01)。

摘　　要：基于湖南省公益林面上固定样地调查数据,提取慈利县15个固定样地中杉木的胸径、冠幅和树高数据,然后选取4种模型拟合杉木的树冠-胸径模型。结果表明:Logistic模型对慈利县杉木公益林冠幅-胸径的拟合效果最好,Exponential模型的拟合效果最差;Logistic模型在增加树高因子和对应参数后,拟合效果得到了进一步提升。该研究结论可为慈利县杉木经营提供参考。Based on the continuous monitoring and inventory project of Hunan ecological forest, the crown length and DBH data of Cunninghamia lanceolata were selected from 15 fixed plot for 4 fitting models. The results showed that the Exponential model had the worst fitting effect, and the Logistic model fitted best. The fitting effect of logistic model was further improved after adding tree height factors and related parameters. This study provides scientific support for forest management in this area.

关 键 词：杉木 公益林 冠幅模型 慈利县 

分 类 号：S791.27[农业科学—林木遗传育种] S718.5[农业科学—林学]