摘要
立木结构特征是森林资源调查、评估及经营管理的基础。本研究通过对150株水杉(Metasequoia glyptostroboides)和175株银杏(Ginkgo biloba)立木结构特征因子的实测,基于立木地径(D_0)、胸径(D_(1.3))、冠幅(CW)、树高(H)等特征因子的实测和相关关系分析,构建了水杉和银杏立木结构特征回归模型。结果表明,水杉、银杏的不同部位直径之间的相关性最强。水杉的D_0-D_(1.3)、D_(0.1)-D_(1.3)之间的关系用Logistic式拟合优度较高,而银杏D_0-D_(1.3)、D_(0.1)-D_(1.3)、D_0–D_(0.1)之间的关系用直线式拟合优度较高。水杉和银杏D_(1.3)-H之间的关系均可用Gompertz式拟合。水杉和银杏的胸径D_(1.3)、H与冠幅CW之间存在一定的线性相关关系,但模型的拟合优度不高。本研究可为区域森林资源调查与监测、森林资源保护与管理等提供基础支撑。
Structure feature of standing tree is the foundation for forest survey,forest appraisal and forest management. Based on data from 150 and 175 sample trees of Metasequoia glyptostroboides and Ginkgo biloba,including measured ground diameter(D0),diameter at breast height(D1.3),tree height(H) and crown width(CW),a series of structure feature models were constructed for standing tree of M. glyptostroboides and G. biloba. Results showed that there were the strongest correlations among feature factors of D0,D0.1,D1.3. The optimal model for D0-D1.3 and D0.1-D1.3 of M. glyptostroboides was Logistic model and that for D0-D1.3、D0.1-D1.3、D0-D0.1 of G. biloba was linear model. The model for D1.3-H of M. glyptostroboides and G. biloba was Gompertz model. There was some linear correlation among D1.3,H and CW of M. glyptostroboides and G.biloba,however,the adjusted R square was relatively lower. This study could lay foundation for regional forest survey,protection and management.
作者
刘志君
管洋洋
徐颖澜
徐悦
李士美
Liu Zhijun;Guan Yangyang;Xu Yinglan;Xu Yue;Li Shimei(College of Landscape Architecture and Forestry,Qingdao Agricultural University,Qingdao,Shandong 266109,China;Natural Resource Bureau of Pingdu City,Qingdao,Shandong 266100,China)
出处
《广西林业科学》
2019年第1期127-132,共6页
Guangxi Forestry Science
基金
青岛农业大学大学生科技创新项目(校级2017-434)
青岛农业大学实验技术研究课题(SYJK17-07)
关键词
水杉
银杏
立木结构
模型
Metasequoia glyptostroboides
Ginkgo biloba
structure of standing tree
model
