金沟岭林场云冷杉过伐林林分直径结构的研究  

Study on Diameter Structure of Overcut Spruce-fir Forest in Jingouling Forest Farm

作　　者：王艳洁[1] 郑小贤[1] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083

出　　处：《林业资源管理》2008年第6期71-74,共4页Forest Resources Management

基　　金：国家"十一五"科技支撑项目(2006BAD03A0804)

摘　　要：以吉林省汪清林业局金沟岭林场云冷杉过伐林112块固定样地1987—2003年间4次调查数据为依据,分析其株数径阶分布特点,并用Weibull分布和负指数分布描述其直径结构。研究表明:该林分直径结构为异龄林结构;Weibull分布函数和负指数分布函数均能表达云冷杉过伐林直径结构,Weibull分布函数拟合的效果比负指数分布好。On the basis of the data from four investigations between 1987 to 2003 of overcut spruce- fir forest in Jingouling Forest Farm, Wangqing Forest Bureau, Jilin province.The author analyses the number distribution characteristic at different diameter grades, and describes the diameter structure with two kinds of functions of Weibull distribution and negative index distribution. The results show that the diameter distributions are complied to the uneven - aged stand. Both Weibull distribution and negative index distribution can be used to describe the stand diameter structure of overcut spruce - fir forest and the former is better than the latter.

关 键 词：云冷杉过伐林 直径结构 金沟岭林场 

分 类 号：S758.5[农业科学—森林经理学]