华北沙地不同密度小黑杨林生长特征  

Research on the Growth Characteristics of Populus×xiaohei on Beach Land in North China

作　　者：张群[1] 范少辉[1,2] 刘广路[2] 冯慧想[1] 宗亦尘[1] 费本华[3] 

机构地区：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091 [2]国际竹藤网络中心,国家林业局竹藤科学与技术重点实验室,北京100102 [3]中国林业科学研究院木材工业研究所,北京100091

出　　处：《林业科学研究》2010年第2期288-292,共5页Forest Research

基　　金：国家自然科学基金重点项目“利用遥感技术预测人工林木材性质和利用价值的研究”(编号30230420)

摘　　要：The growth characteristics and correlation between the canopy index and growth characteristics of Populus×xiaohei plantation with different densities and stand ages were studied by the methods of sampling typical plot and allometric dimension analysis in Xuejiazhuang Forest Farm in Shanxi Province.The results showed that the DBHs of Populus×xiaohei plantations with various tree densities were different.The Logistic growth model could accurately describe the tree height and DBH growth of Populus×xiaohei.The fast growing period of tree height was obviously earlier and longer than that of DBH.The dh value decreased with the increase of tree age,the DBH and the tree density.The correlation coefficient between tree canopy and the DBH was increased with the tree densities.The DBH could be estimated by the canopy size in stands with low density.Therefore,the medium density Populus×xiaohei plantation should be selected for satellite image interpretation of tree canopy.The growth characteristics and correlation between the canopy index and growth characteristics of Populus x xiaohei plantation with different densities and stand ages were studied by the methods of sampling typical plot and allometric dimension analysis in Xuejiazhuang Forest Farm in Shanxi Province. The results showed that the DBHs of Populus × xiaohei plantations with various tree densities were different. The Logistic growth model could accurately describe the tree height and DBH growth of Populus × xiaohei. The fast growing period of tree height was obviously earlier and longer than that of DBH. The dh value decreased with the increase of tree age, the DBH and the tree density. The correlation coefficient between tree canopy and the DBH was increased with the tree densities. The DBH could be estimated by the canopy size in stands with low density. Therefore, the medium density Populus × xiaohei plantation should be selected for satellite image interpretation of tree canopy.

关 键 词：小黑杨 生长特征 树冠 相关性 

分 类 号：S792.11[农业科学—林木遗传育种]