福建海岸带灌丛群落的地理分布特点

GEOGRAPHICAL DISTRIBUTION FEATURES OF THE SHRUBBERY COMMUNITY ALONG THE COASTBELT OF FUJIAN PROVINCE

根据福安溪尾、霞浦下浒、宁德飞鸾、罗源起步、连江宫坂、福清海口、平潭君山和东山西埔共8个地区32处样地512平方米具代表性的我省海岸带灌丛群落调查数据,进行了地区间种类多频度聚类和排序分析,得出闽江口以南的东山西埔,福清海口和平潭君山3个地区的一个地区组合,和闽江口以北的福安溪尾,霞浦下浒、宁德飞鸾、罗源起步、连江宫坂5个地区的一个地区组合,且它们依温度、降水量作规律的排布。另据各地区群落地理成分及种类多样性作验证性统计,结果表明:福建海岸带灌丛群落以热带区系成分为主;自北而南,泛热带、热带区系成分所占的比重逐渐增大,到东山西埔达到最大值;种类多样性指数D值也大致由北而南逐渐增大;

Based on the data from the investigation on the 512m2 representative sample spots covering 32 places in 8 different areas, multi梖requency sorting of the plants as well as order -arranging analysis were made with the conclusion that there are two regional combinations: one on the morth side of miajiang River including 5 areas while the other on the south side of it in-cluding 3 areas, and they distribute regularly according to the temperature and rainfall. In addi-tion , the verifying statistics show that the majority of the shrubbery community along the coasli-nee of Fujian is that of tropical system, the proportion of subtropical and tropical systems in-creasiang gradually from north to south with the maximum at Xipu in Dongshang, the value of D showing the same tendency, which is in comformity with the results of investigations made local- ly.