秦岭锐齿栎群落种类组成与区系分析  

Component species and flora of Quercus aliena var. acuteserrata community in Mt. Qinling

作　　者：赵永华[1] 雷瑞德[2] 贾夏[1] 何兴元[1] 陈玮[1] 

机构地区：[1]中国科学院沈阳应用生态研究所树木园,沈阳110016 [2]西北农林科技大学林学院,杨凌712100

出　　处：《生态学杂志》2003年第5期15-19,共5页Chinese Journal of Ecology

基　　金：国家林业局重点课题资助 (96-3 0 )

摘　　要：在秦岭林区的锐齿栎群落中出现的维管束植物有 82科 2 2 7属 4 95种 ,其中乔木 12 3种 ,灌木 10 0种 ,草本 2 4 0种 ,层间植物 32种 ;非维管束植物有 15科 19属 19种 ,其中苔藓植物9科 13属 13种 ,蕨类植物 6科 6属 6种。群落中偶见种或稀有种的频度出现的百分比高 ,体现了群落在生境上的差异性 ,也说明了该群落是一个种类比较丰富、均匀的群落。其区系种类复杂、繁多 ,地理联系广泛 ,来源于多种地理成分 ,其中温带成分占优势 ,共有 115属 ,占总属数的5 3 99% ;而北温带成分又在其中占明显优势 ,共有 92属 ,占总属数的 4 3 19% ,这些北温带成分大多是该群落各层次中的常遇植物 ,也是主要的建群植物和主要的伴生植物 ,体现了锐齿栎群落植物区系的温带亲缘性 ;各热带成分占有相当的比例 ,说明了该植物区系与热带植物区系的渊源关系及与其地理位置、气候特征相适应的过渡性特征。There were 495 species,227 genera, and 82 families of vascular plants, including 123 species of arbor, 100 species,of shrubs, 240 species of herbs and 32 species,of strata plants and 15 families 19 genera 19 species of non-vascular bundle plants inchuding 13 species 13 genera 9 familiesof mass and pteridophyte 6 species, 6 genera and 6 families of pteridophyte in the community of Mt.Qingling. Proportion of occasional species or rare species was high, which indicated habitat heterogeneity of the community with abundant species. In Qinling Mountains, flora composition of Quercus aliena var. acuteserrata , stands was from several geographical elements. Accounting for 53.99% of the total, the temperate components with 115 genera were in the first position, and the north temperate with 92 genera accounting for 43.19% of the total were predominant in the temperate elements. These north temperate plants were common in each layer of the community, as well as in the main edificators and companion plants. This showed that flora of the community had affinities with the temperate zone. Proportion of the tropic elements was fairly high indicating a relationship between this community and the tropical flora. At the same time, its species were complicated and various, and connection in geography was widespread. All these indicated the transitional character of the community flora in consistent with its geographical position and climate character.

关 键 词：秦岭 群落 锐齿栎 区系分析 种类组成 

分 类 号：S718.5[农业科学—林学]