文献类型：会议论文

英文题名：Analysis of Crown Inclination and Influencing Factors of Cunninghamia Lanceolata in Huangfengqiao, Hunan Province

作者：Zhang, Y. C.[1] Zhang, H. Q.[1] Chen, Y. F.[1]

第一作者：Zhang, Y. C.

通信作者：Zhang, YC[1]

机构：[1]Chinese Acad Forestry, Res Inst Forest Resource Informat Tech, Beijing, Peoples R China

会议论文集：International Conference on Computer Information Systems and Industrial Applications (CISIA)

会议日期：JUN 28-29, 2015

会议地点：Bangkok, THAILAND

语种：英文

外文关键词：crown inclination; cunninghamia lanceolata; analysis of influence intensity

年份：2015

摘要：Research object was middle-aged plantation of Cunninghamia Lanceolata in Huangfengqiao national forest farm, You county, Hunan Province. Ratio of crown inclination (RCI) was set up as a index to signify crown inclination in research. Ratio of crown inclination in east, west, south and north were calculated and histograms in four direction were drawn which showed that crown inclination was generally existed in research area. Principal Component Analysis (PCA) was used to measure the influence that diameter at breast height (DBH), height, height under branch and crown height had on Cunninghamia Lanceolata crown inclination. The result showed that most influential factors of the four factors were diameter at breast height (DBH) and height.