多边形样地法的最优株数选取  

Optimal Value Selection of Trees with Polygon Plot Method

作　　者：杨丝涵[1] 岳德鹏[1] 冯仲科[2] 郑君[2] 

机构地区：[1]省部共建森林资源培育与保护教育部重点实验室(北京林业大学),北京100083 [2]北京林业大学测绘与3S技术中心

出　　处：《东北林业大学学报》2013年第12期26-29,共4页Journal of Northeast Forestry University

基　　金：北京市自然科学基金项目(09D0297);国家科技支撑计划项目(2012BAH34B01);国家自然科学基金项目(30872038)

摘　　要：为了实现森林资源的精准快速计测,以在北京市内平原区县及周边山区县选取的5块标准样地内布设的175块不同树木数量构成的多边形样地为研究对象,按照多边形样地法的原理进行观测,将测算出的样地蓄积量、平均树高和平均胸径与标准样地每木检尺的结果进行对比分析。结论表明:当多边形样地由9株树组成时,在人工林中,样地蓄积量估测精度可达到93.2%,平均树高和平均胸径的估测精度也可达90%以上,满足森林二类调查精度。研究说明9株树的多边形样地法是一种快速准确的森林资源调查方法。For measuring forest resources accurately and fast,we arranged 175 polygon plots consist of different number of trees in five standard plots selected in the plain district and the surrounding mountainous area of Beijing city as the research objects. These plots were observed according to the principle of polygon plot method,and then the data of plot volume,average height and DBH calculated in polygon plot method were compared with data from the survey of five standard plots. The estimation accuracy of the plot volume is 93. 2%,and one of the average height and DBH is up to more than 90% when the polygon plot are made of nine trees. The results can meet the accuracy requirements of forest management inventory. Therefore,the polygon plot method is a rapid and accurate method for forest resources inventory.

关 键 词：多边形样地法 森林资源调查 林分调查因子 最优株数 

分 类 号：S758.5[农业科学—森林经理学]