中条山油松人工林胸径分布规律研究  

Distribution of Diameter Structure with Pinus tabulaeformis Plantation in Zhongtiao Mountains

作　　者：廉凯敏 段福军 苗科 李浩浩 樊兰英[2] LIAN Kai-min;DUAN Fu-jun;MIAO Ke;Li Hao-hao;FAN Lan-ying(Zhongtiaoshan State-owned Forest Administration of Shanxi, Houma 043000, Shanxi, China;Shanxi Academy of Forest Sciences, Taiyuan 030012, China)

机构地区：[1]山西省中条山国有林管理局,山西侯马043000 [2]山西省林业科学研究院,太原030012

出　　处：《陕西林业科技》2020年第5期12-15,共4页Shaanxi Forest Science and Technology

基　　金：中德合作山西森林可持续经营技术示范林场建设项目(W-CHN 19-01);中德项目中村林场森林经营类型划分与经营技术研究(LYCX201937)。

摘　　要：本文以中条山下川营林区油松人工纯林为研究对象,采用典型样地取样法,针对野外调查数据,选取正态分布函数拟合林分胸径的分布规律,并用x^2检验径阶株数的理论值和实测值吻合度。结果表明:(1)正态分布函数较好的拟合了油松人工林胸径分布规律。(2)曲线左偏程度较大,并且随着密度的增加,左偏程度增大。(3)研究区油松人工林分结构不合理,中小径阶株数多,大径阶株数少。(4)探索一种新型森林经营模式,即目标树全林经营模式。The study region was located in the Pinus tabulaeformis plantation in Zhongtiao Mountains.Based on the data of the 3 plots by a typical plot sampling method,the normal distribution function was used to fit the distribution of DBH of stands.The agreement between theoretical and measured values of diameter order plants was tested by Chi-square test.The results showed that the distribution of DBH of P.tabulaeformis plantation was well fitted by the normal distribution function.The left deviation degree of the curve was large,and itwas bigger with the increasing of density.The structure of P.tabulaeformis plantation was unreasonable,with the numbers of medium and small diameter stagesto be more than thelarge diameter.New types of forest management model focusing on target trees were proposed.

关 键 词：胸径分布 油松 人工林 中条山 

分 类 号：S758.55[农业科学—森林经理学]