落叶松人工林密度对林木生长的影响  

Influences of Density of Larix Principis on Tree Growth

作　　者：梁文俊[1] 丁国栋[1] 韦立伟[1] 郭跃[1] 高广磊[1] 

机构地区：[1]北京林业大学水土保持学院,北京100083

出　　处：《水土保持通报》2010年第4期78-80,86,共4页Bulletin of Soil and Water Conservation

基　　金：国家林业局林业公益性行业科研专项"典型区域森林生态系统健康维护与经营技术研究"(200804022)

摘　　要：以河北省木兰林业管理局的北沟林场作为试验基地,通过实地调查,对不同密度的落叶松林地进行了详细的测量,分析了不同落叶松人工林密度对落叶松林个体生长状况等因子的影响。结果表明,在一定林分密度范围内,随着林分密度的增加,林分胸径、冠幅呈减小趋势,二者呈幂指数函数关系;单株材积呈递减趋势,蓄积量呈递增趋势,单株材积和蓄积量与密度也符合函数关系规律。This study was conducted in the Beigou forest farm of Mulan Forestry Authority in Hebei Province. In a field investigation,detailed measurements were made for the different densities of Larix principis. Results show that as the stand density increases,both stand diameter at chest height and crown width decrease,which have an exponential relation to the density. Single-tree volume decreases progressively,while stock volume increases progressively. The single timber volume and store are also related to the density.

关 键 词：林分密度 落叶松 生长量 

分 类 号：S759.52[农业科学—森林经理学] S725.6[农业科学—林学]