莆田老鹰尖自然保护区森林群落物种多样性的研究

对福建莆田市老鹰尖植物区系和群落物种多样性的调查与分析,结果表明,老鹰尖植物种类丰富,计有维管束植物181科737属1003种(含变种),其中蕨类植物35科72属89种,裸子植物9科18属19种,被子植物137科647属901种;植物区系成分复杂,联系广泛,以热带亚热带成分为主,属、种分别占55.17％和57.48％,其植被为中亚热带向南亚热带过度类型;11个主要森林群落的物种多样性以米槠林为最高,D_(ah)达3.5109,其次为罗浮栲+丝栗栲林和米槠+栲树林,D_(ah)指数值分别达2.8945和2.7854,而篓竹林群落为最低,D_(ah)指数值仅1.0081,群落各层片物种多样性以灌木层为最高,呈灌木>乔木层>草本>藤本的变化趋势,说明老鹰尖的水热资源较为丰富。

Study on The Species Diversity of Forest Community in Laoyingjian Nature Protective Section of Fujian Putian

The vegetation data at the rarest community in Laoymgjian, fujian Pudan city,are used as the information of analysis of flora and species diversity. Hie results showed that vascular plants collected and known in the region are 1 003 species,737 genera and 181 families,including 89 species,72 genera and 35 families of peridophyte, 19 species, 18 genera and 9 families of gymnospennac, 901 species,647 genera and 137 families of angiospennae. The floristicelements in this region are complex and relation are extensive, the total amounts of tropic and subtropical zone distribution type is mostly, their genera and species are separate 55.17 % and 57.48 % . The type of this floristicelements are attribute transition form middle subtropical zone to south subtropical zone. In this 11 important forest commuity,the spescies diversity of Castanopsis carlesii forest is highest , its D4 is 3.5109, the C .fabri + C .fargesii, and C. carlesii + C .fargesu forest were secondly, there D.I, were2.8945and2.7854, but the lowest is P. maJdnoi forest , its D.I, only 1.0081. The higest is the multiformity of shrub and the lowest is the vine synusia. In plots, the species diversity is shrub > tree synusia > herb synusia > vine synusia, this showed the resource of caloric and water is plentier.