Community characteristics of Carpinus turczaninowii and the soil environmental interpretation on Dalu Is-land in the northern Yellow Sea
To explore the community characteristics of Carpinus turczaninowii and their relationships with soil envi-ronmental factors on Dalu Island in the northem Yellow Sea,we carried out plot survey with nine C.turczaninowii communities on Dalu Island.We analyzed community characteristics by flora composition,species importance val-ue,species diversity,and diameter structure,and determined the soil influencing factors by using two-way indica-tor species analysis(TWINSPAN)and redundancy analysis(RDA).The results showed that:(1)A total of 110 vascular plant species belonging to 46 families and 84 genera were recorded in the C.turczaninowii communities,including 107 species in 82 genera of 44 families of seed plants and 3 species in 2 families of 2 genera of ferns.Most of the seed flora composition had temperate distribution properties.The dominant species in the tree,shrub,and herb layers were C.turczaninowii,Zanthoxylum schinifolium,and Carex callitrichos var.nana,with importance values of 52.84％,34.49％,and 21.54％,respectively.Species composition of tree layer was relatively poor,while species of shrub and herb layers were more abundant.The community did not reach the climax stage of succession.The diameter size structure of C.turczaninowii populations reflected that the community was composed of growing population.(2)The cluster analysis classified the C.turczaninowii communities into four types of clusters.The or-dination analysis results verified the rationality of the aforementioned cluster analysis results,and showed that soil thickness,soil total phosphorus content,and pH were the main factors affecting species distribution in C.turczani-nowii communities.
Carpinus turczaninowii communityforest community characteristicscluster analysisordination
万方数据
维普
