南方农业学报2012，Vol.43Issue(7)：1013-1016,4.DOI:10.3969/j:issn.2095-1191.2012.07.1013
桂东南地区柳杉人工林生长规律研究
Growth regularity of Cryptomeria fortunei plantation in southeast Guangxi
摘要
Abstract
[Objective]Growth regularity of Cryptomeria fortune] plantation in southeast Guangxi was analyzed to provide references for scientifically managing Cryptomeria fortune! plantation. [Method]The relationship among tree height, DBH, stem volume and age in artifical plantation was studied by stem analytical method. Regression model of growth in was constructed with 3 tree factors. [Result]Successive annual growth curves of tree height and DBH intersected with the average growth curve for many times and changed drastically. Successive annual growth curve for tree height showed two growth peaks at initial growth stage and survey stage, DBH successive annual growth curve reached the maximum in the 10th year, then decreased in the coming years. However, the successive annual growth curve for stem volume showed relatively less variation than that for tree height and DBH,and there was no intersection point between average growth curve and successive annual growth curve for stem volume of single plant. Correlation index R2 of each fitted growth forecast model was over 0.998, and Quadratic Curve equation proved to be the best growth model for tree height, DBH and stem volume. [Conclusion]Tree height, DBH and stem volume grew relatively fast before 31 a, successive annual increment showed the tendency of increasing first and then descending with tree age. Cryptomeria fortunei grew vigorously during initial growth period and maintained growing after 31a. The fitted growth model could he applied in practical production.关键词
柳杉/人工林/生长规律/最优生长模型/桂东南地区Key words
Cryptomeria fortunei/plantation growth regularity/optimal growth model/southeast Guangxi分类
农业科技引用本文复制引用
林宁,秦武明,蒋林,覃德文,卫伶俐,王瑶..桂东南地区柳杉人工林生长规律研究[J].南方农业学报,2012,43(7):1013-1016,4.基金项目
“十一五”基金项目(桂林科字[2009]第23号) （桂林科字[2009]第23号）
大径材经营技术及木材综合利用研究项目(31070560) （31070560）
