日本柳杉合理经营密度的研究  

Study on the Rational Density for Cryptomoria japonica Plantation

作　　者：沈作奎[1] 鲁胜平[1] 

机构地区：[1]湖北民族学院生物科学与技术学院,湖北恩施445000

出　　处：《湖北民族学院学报（自然科学版）》2004年第4期57-59,共3页Journal of Hubei Minzu University(Natural Science Edition)

基　　金：湖北省教育厅项目(99A024)

摘　　要：通过对鄂西南日本柳杉人工林调查,用数理统计原理,选择6种方程建立冠幅面积与胸径间的相关数学模型,求得最佳数学模型为:Cw=0.657492+0.439685D,由此得到冠幅面积预测方程及不同胸径的理论密度,最后,依所测定的树冠重叠系数(K=1.26)求得林分最大密度,并计算了经营密度0.6～0.8的日本柳杉人工林林分密度,以便于生产上对日本柳杉人工林林分密度进行管理.The correlative mathematical models between tree crown area and diameter at breast height are erected by using the principle of mathematical statistics and selecting six sort equations, through to investigate the Japan cedar man-made forest of southwest Hubei.The best mathematical model is C_w=0.657 492+0.439 685D.It leads to the forcasting equation and the theoretic density of variant diameter at breast height. In order to manage the forest stand density of the Japan cedar man-made forest during production, the maximal density of forest stand is impetrated and the stand density of the Japan cedar man-made forest of 0.6～0.8 management density is figured according to the measured overlap ratio of tree crown

关 键 词：日本柳杉 胸径 人工林 林分密度 冠幅 合理经营 经营密度 面积 方程 数理统计原理 

分 类 号：N945.12[自然科学总论—系统科学] S791.31[农业科学—林木遗传育种]