湘南桉树人工林生长规律研究  

Growth regularity of Eucalyptus plantation in southern Hunan Province

作　　者：李柏海[1] 邹建文[1] 邓翔 罗先权[1] 陈灵[1] 彭静[1] 徐剑辉 LI Bohai;ZOU Jianwen;DENG Xiang;LUO Xianquan;CHEN Ling;PENG Jing;XU Jianhui(Hunan Forest Botanical Garden,Changsha 410116,China;College of Forestry,South Central University of Forestry and Technology,Changsha 410004,China;Agricultural Technology Extension Service Center of Enping City,Guangdong Province,Enping 529400,China;Forestry Bureau of Dong’an County,Dong′an425900,China)

机构地区：[1]湖南省森林植物园,湖南长沙410116 [2]中南林业科技大学林学院,湖南长沙410004 [3]广东省恩平市农业技术推广服务中心,广东恩平529400 [4]东安县林业局,湖南东安425900

出　　处：《湖南林业科技》2019年第6期29-33,38,共6页Hunan Forestry Science & Technology

基　　金：“十三五”国家重点研发计划项目“桉树大径材定向培育技术”(2016YFD0600502)

摘　　要：以湘南地区9年生桉树人工林为研究对象,探究其树高、胸径和单木材积的生长规律。结果表明:湘南地区"常寒一号"桉树人工林树高总生长量在林龄为9 a时可达到19.10~20.20 m,其0~9年段的树高平均生长量和连年生长量基本上都呈现逐步递减规律。胸径总生长量在林龄为9 a时可达到13.50~16.70 cm,其0~9年段的胸径平均生长量和连年生长量同样也基本呈现逐步递减的规律。单木材积总生长量在林龄为9 a时可达到0.1531~0.2155 m^3;单木材积的年均生长量逐步递增;单木材积的连年生长量在此期间一直高于平均生长量,并呈现出先增加后减少的趋势,峰值大约在林龄为6 a左右,并在林龄为9 a左右与平均生长量相交,此后低于平均生长量。由此可见,湘南桉树人工林的数量成熟期在林龄为9 a前后。Taking 9-year-oldEucalyptus plantation in southern Hunan Province as the research object,the change rules of tree height,DBH and single volume were explored.Research results show that:the total height growth of Eucalyptus plantation"Changhan No.1"in southern Hunan Province can reach 19.10~20.20 m in 9 years.The average height growth and successive annual growth of Eucalyptus plantation in 0~9 years basically show a gradual decline law.The total growth of DBH can reach 13.50~16.70 cm in 9 a,and the average growth of DBH in 0~9 a and annual growth also show a gradual decline.The total volume growth of single wood can reach 0.1531~0.2155 m^3 in 9 a.The annual growth of single wood volume is gradually increasing,while the annual growth of single wood volume is always higher than the average growth during this period,and shows a trend of first increasing and then decreasing.The peak value is about 6 a,and intersects with the average growth in 9 a,and then is lower than the average growth.Therefore,the number of mature years of Eucalyptus plantation in southern Hunan is around 9 a.

关 键 词：桉树人工林 生长规律 湘南 

分 类 号：S792[农业科学—林木遗传育种]