摘要
大连地处辽东半岛南端,三面环海,岛礁众多.通过对大连5个具有典型代表意义的海岛实地调查,查明了5个岛屿的野生维管束植物的种类,并分析了其物种多样性特点.结果表明,5个海岛共有野生维管束植物81科260属439种,其中蕨类9科9属16种,裸子植物2科2属3种,被子植物70科249属420种;5个海岛的野生维管束植物组成复杂,植物成分以温带性质为主,有一定的热带亲缘;经计算比较,5个海岛间野生维管束植物相似程度较低,推测小尺度下植物相似性程度与岛屿面积、离岸距离和人为干扰程度有一定联系.另外,5个海岛的物种数量与岛屿面积符合Mac Athur RH等提出的岛屿生物地理学理论,物种数量随着岛屿面积的增加而增加.
Dalian is located at the southern tip of Liaodong peninsula ow ning quite a few islands. An investigation of w ild vascular plants diversity w as conducted on five typical islands.Based on the result,439 w ild vascular plants w ere recorded belonged to 260 genera and 81 families,including 16 pteridophytes belonged to 9 genera and 9 families,3 gymnosperms belonged to 2 genera and 2 families,and 420 angiosperms belonged to 249 genera and 70 families. There is a various composition of species as w ell as a scattered composition of genera. The flora w as composed of in a large part of temperate elements and also accounts for certain tropical elements.The similarities betw een each of these islands are low. M eanw hile similarity coefficients betw een nearby islands are related to the area,the distance from the shore and the degree of artificial disturbance. M oreover the speciation-area relationship of the five islands accords w ith the theory of island biogeography reported by M ac Arthur RH. The amount of plant species of the five islandsincreases as the island area increase.
出处
《辽宁大学学报（自然科学版）》
CAS
2015年第4期372-377,共6页
Journal of Liaoning University：Natural Sciences Edition
关键词
海岛
植物多样性
区系
相似性系数
物种数量-面积
island
plant diversity
flora
similarity coefficients
speciation-area relationship
