古田山国家自然保护区马尾松林主要种群生态位研究  

Niche of Dominant Populations in Pinus massoniana Forest in Gutian Mountain National Nature Reserve of Zhejiang Province

作　　者：胡正华[1] 吴芳芳[1] 刘巧辉[1] 陈书涛[1] 陈魁[1] 于明坚[2] 

机构地区：[1]南京信息工程大学应用气象学院,江苏南京210044 [2]浙江大学生命科学学院,浙江杭州310028

出　　处：《林业科学研究》2009年第3期330-334,共5页Forest Research

基　　金：国家自然科学基金项目(30200034)

摘　　要：通过样方法进行群落调查,每个样地大小为20 m×20 m。采用生态位宽度、生态位相似性比例和生态位重叠值公式统计分析了古田山自然保护区马尾松林优势种群生态位特征。结果表明:马尾松、青冈、石栎和木荷等种群有较大的生态位宽度,其Bi、Ba值分别为0.904 0、0.781 8,0.842 1、0.585 3,0.805 5、0.629 2和0.785 0、0.457 2,而杨梅的生态位宽度最小,其Bi、Ba值分别为0.250 5和0.053 3。生态位较大的物种间生态位相似性比例较高,如马尾松与木荷为0.567 0、甜槠与木荷为0.677 5、马尾松与石栎为0.614 4。马尾松林中物种间生态位重叠值小于0.1的比例达到89%,生态位重叠较小,表明马尾松林种间竞争不大,资源较为充分,能为更多物种的侵入和生存提供充足的空间与资源。The niche investigation in Pinus massoniana forest of Gutian Mountain National Nature Reserve was conducted using plot method （plot size 20 m -20 m）. Parameters, such as niche breadth, niche similarity ratio and niche overlap were calculated to reveal the niche characteristics of dominant populations. Results showed that the niche breadths of Pinus massoniana, Cyclobalanopsis glauca, Lithocarpus glaber, Schima superba, were larger than that of the other species, with Levins （Bi） and Hurlbert＇ s （Ba） values being 0.904 0 and 0.781 8,0.842 1 and 0.585 3,0. 805 5 and 0.629 2, 0.785 0 and 0.457 2, respectively. While, the niche breadths of Myrica rubra were smaller, with Bi and Ba values being 0. 250 5 and 0. 053 populations with broad niche breadth was greater than that of the 3. The niche similarity ratio （Cih） among the populations with narrow niche breadths. Cih of Pinus massoniana and Schima superba, Castanopsis eyrei and Schima superba, Pinus massoniana and Lithocarpus glaber were 0.567 0, 0.677 5 and 0. 614 4, respectively. The niche overlap degree was low between species in Pinus massoniana forest, with values less than 0.1 accounting for 89%, suggesting relatively weak interspecies competition and sufficient resource and living space for more future species.

关 键 词：马尾松林 主要种群 生态位 古田山 

分 类 号：S718.5[农业科学—林学]