大兴安岭3种主要林型兴安落叶松种子库研究  

Study on the Seed Bank of Different Types of Larix gmelinii Forests

作　　者：阿日根 刘洋[1] 杨富荣[1] 雷那庆 孟军贵 吴小红 铁牛[1] Arigen;LIU Yang;YANG Fu-rong;LEI Na-qing;MENG Jun-gui;WU Xiao-hong;TIE Niu(College of Forestry,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018,China;Inner Mongolia H esheng Institute of Ecological Sciences ＆ Technology,H ohhot,Inner Mongolia 010018,China)

机构地区：[1]内蒙古农业大学林学院,内蒙古呼和浩特010018 [2]内蒙古和盛生态科技研究院有限公司,内蒙古呼和浩特010018

出　　处：《西北林学院学报》2018年第4期116-119,共4页Journal of Northwest Forestry University

基　　金：国家自然科学基金项目(31360180)

摘　　要：以大兴安岭3种主要林型兴安落叶松种子库为研究对象,通过样地调查,对内蒙古大兴安岭北部兴安落叶松林3种主要林型的落种量、土壤种子储备量质量及其垂直分布进行研究,利用SPSS软件对所收集的数据进行单因素方差分析。结果表明,3种不同林型兴安落叶松林种子库中杜鹃-兴安落叶松林落种量最大,为1 496粒/m^2;杜香-兴安落叶松林落种量最小,为246粒/m^2;草类-兴安落叶松林落种量为349粒/m^2;土壤种子库的储备量大小分别为2 069.33、1 342.67粒/m^2和1 047.99粒/m^2。从种子库生活力程度看,种子整体质量差,种子库中90%以上为无活力种子;土壤种子储备量中种子70%分布在枯枝落叶层中,这与种子自身生物学特性和外界环境有着密切的关系。Based on a field investigation on three different types of forest sampling sites,a study was conducted on Larix gmelinii seeds from the aspects of the amount of seed falling,storage quality of seeds reserved in soil,and vertical distribution in northern Daxing＇anling,Inner Mongolia.SPSS software was used to analyze the data collected by single factor analysis.The results showed that the scale of seed banks of different types of L.gmelinii forests was in the order of Rhododendron simsii Planch.-Larixforest〉Herbage-Larixforest 〉Ledum palustre-Larixforest,in which the average amounts of seed falling in unit area were1 496,349 and 246 seed/m^2,and the storage qualities of seeds reserved in soil were 2 069.33,1 342.67 and1 047.99 seed/m^2,respectively.According to seed bank viability,the qualities of all of the samples were poor.More than 90% of the seeds stored were inactive.About 70% of the seeds reserved in soil were distributed in the litter layer,which was closely related to the biological characteristics of the seeds and the external environment.

关 键 词：兴安落叶松 土壤种子储备量 落种量 林型 

分 类 号：S791.222[农业科学—林木遗传育种]