摘要
海南岛文昌县滨海沙土草地植被,用改进的点样法——拉线点样法,测定的数据,所作的数量分析,可分为14个群丛,两个类型,6个主要群系(群落):1.热带滨海沙土沼泽草地 1)薄果草+岗松群系(含5个群丛)2)田葱群系(含1个群丛)2.热带滨海沙生草地 3)鸭咀草+蜈蚣草群系(1个群丛) 4)蜈蚣草+金须茅群系(1个群丛) 5)鬣刺+单叶牡荆群系(1个群丛) 6)竹节草+野香茅群落(1个群丛)在这6个群落(群系)中,以潜育性沙土上由薄果草和岗松组成的草地,以及半流动和固定沙土上以蜈蚣草、鸭咀草、野香茅为主的草地,面积最大,最有代表性。
Using the data obtained with Line-point contact,an improved point- contact method,we analysed the grassland vegetation on coastal sandy soil at wenchan County,Hainan Island.The vegetation can be divided into 14 associations,two types and six main formations or co- mmunities as follows: 1.Tropical sedgeland on coastal sandy marsh 1)Form.Leptocarpus disjunctus+Baeckea frutescens(including 5 Ass- ociations) 2)Form.Philydeum lanuginosum(1 Asso.) 2.Tropical grassland on coastal sand 3)Form.Ischaemum aristatum+Eremochloa ciliaris(1 Asso.) 4)Form.Eremochloa ciliaris+Chrysopogon orientalis(1 Asso.) 5)Form.Spinifex littoreus+Vitex rotundifolia(1 Asso.) 6)Comm.Chrysopogon aciculatus+Cymbopogon tortilis(1 Asso.) In these communities the sedgeland of Leptocarpus on gleyed sandy soil,and the grassland on helf-fixing and fixed sandy soil domi- nated by Eremochloa,Ischaemum and Cymbopogon are the largest and most representative in this area.
基金
本项研究由国家自然科学基金会资助
关键词
数量分析
热带滨海沙土
草地植被
Tropical coastal sandy Soil
Grassland vegetation
Quantitative analysis
Hainan Island
