苏北滨海盐土区河流入海口植物群落特征分析  

Research on Characteristics of Plant Communities in Subei Coastal Solonchak Region of Estuary Section

作　　者：邹姜慧 贾健[2] 谢凯娜[2] 鲁小珍[1] 胡海波[1] 

机构地区：[1]南京林业大学南方现代林业协同创新中心,江苏南京210037 [2]江苏省水利勘测设计研究院有限公司,江苏扬州225127

出　　处：《安徽农业科学》2015年第25期5-9,33,共6页Journal of Anhui Agricultural Sciences

基　　金：淮河入海水道二期工程土壤盐分分布规律与水土保持措施研究;南京林业大学生物学优势学科;国家林业局生态工程重点实验室

摘　　要：采用全面踏查与标准样地调查相结合的方法,以淮河入海水道二期工程入海口植物群落为研究区,对该区域植物群落的种类组成、区系特征、群落结构及物种多样性进行分析。结果表明:研究区共有植物物种78种,分属36科71属;80个植物群落样地中共有植物38种,分属19科35属;植物区系地理成分较复杂,以温带、泛热带及世界分布型为主,亚热带向温带过渡的特征明显。研究区自然植物群落以芦苇群落、白茅群落、茵陈蒿群落、盐蒿及苔草群落为典型群落;根据C.Raunkiaer的分类系统对群落生活型分析表明一年生植物占绝对优势。研究区植物物种丰富度整体不高;不同群落的物种多样性指数大小为芦苇群落>盐蒿群落>茵陈蒿群落>苔草群落>白茅群落;不同层次的物种多样性指数大小为草本层>乔木层>灌木层>层间层。Adopting the methods of comprehensive survey and standard sample investigation to study the characteristics of plant community of the second phase of Huaihe River. The species composition, floristie characteristics, community structure and species diversity were analyzed. Results indicate that there are 78 species, including 36 families and 71 genera; there are 38 species, 19 families and 35 genera in 80 sample plots. The floristic geographical elements are various, temperate and pan tropical and world distribution type make up the main proportion. Subtropical to temperate characteristic is significant. The typical community in the research area include Phragmites australis, Imperata cylindrica, Artemisia capillaries, Artemisia halodendron and Carex doisutepensis. According to the analysis from reference of classification system by C. Rainkiaer, it showed that annual plants take up the absolute advantage. Comparing species diversity index of different community, the ranking is： Phragmites australis 〉 Artemisia halodendronand 〉 Artemisia capillaries 〉 Carex doisutepensis 〉 lmperata cylindrica. The species diversity index of different levels： herb layer 〉 tree layer 〉 shrub layer 〉 inter layer.

关 键 词：群落特征 种类组成 区系特征 物种多样性 

分 类 号：S731.1[农业科学—林学]