干旱区生态环境知识资源中心(Arid): 鄱阳湖滨沙地植物多样性特征

Arid

	鄱阳湖滨沙地植物多样性特征
其他题名	Plant Diversity Characteristics in Poyang Lakeside
	段剑 1; 杨洁 1; 刘仁林 2; 汪邦稳 3; 莫明浩 3
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2013
卷号	33 期号:4 页码:1034-1040
中文摘要	采用线路踏查法和空间代替时间的方法,调查统计鄱阳湖滨多宝沙山沙地植物组成、优势类群以及风沙化过程中植物组成、多样性、生态习性和生活型的变化特点。结果表明:(1)鄱阳湖滨多宝沙山沙地植物有129种,隶属于58科104属,其中被子植物为研究区沙生植物的重要组成部分;生活型谱以高位芽植物居首位,其次为一年生植物,具有明显的亚热带荒漠属性;优势类群主要为蔷薇科(Rosaceae)、蝶形花科(Papilionaceae)、菊科(Compositae)和禾本科(Gramineae)植物。(2)土地风沙化过程中,植物组成变化较大,固定沙丘上以特有种占优势,流动沙丘上主要是共有种,半流动沙丘上以共有种和稀有种组成;植物丰富度、多样性指数逐渐降低;旱生植物比例增多,中生植物减少,湿生植物仅在固定沙丘阶段出现;一年生植物的减少,地下芽植物的增加,变化幅度较大的为半流动沙丘至流动沙丘阶段。
英文摘要	In this paper, sand plant composition and dominant groups in the Duobao sand dunes in Poyang Lakeside were described by using line investigation. The change characteristics of plant composition, species diversity,ecological habits and life-form in the process of desertification were analyzed. The results show that:(1)There are 58 family, 104 genera and 129 species in the studied area, among which Magnoliophyta play important role in the plant composition. In life-form spectrum, Phanerophytes are the most common and Therophytes are in the middle, which reflects the vegetation of region have the properties of Subtropical desert. Dominant groups are made up of Rosaceae, Papilionaceae, Compositae and Gramineae.(2)In the process of desertification, the plant composition have great changes. The dominant species on fixed dunes and unfixed sand dunes are respectively specialized and general species, and semifixed sand dunes consist of general and rare species. Species richness and diversity index are decreasing gradually with desertification. The change characteristics of ecological habits are that the percent of xerophytes are increasing gradually and mesophytes are decreasing on desertification. Hygrophytes only appear on fixed sand dunes. The increasing of Cryptophytes and decreasing of Therophytes are the main change characteristics of life-form. The life-form has changed significantly from semifixed to unfixed sand dunes stage.
中文关键词	风沙化过程 ; 植物多样性 ; 鄱阳湖
英文关键词	process of desertification plant diversity Poyang Lake
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4895052
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230626
作者单位	1.江西农业大学园林与艺术学院, 南昌, 江西 330045, 中国; 2.赣南师范学院生命与环境科学学院, 赣州, 江西 341000, 中国; 3.江西省水土保持科学研究院, 南昌, 江西 330029, 中国
推荐引用方式 GB/T 7714	段剑,杨洁,刘仁林,等. 鄱阳湖滨沙地植物多样性特征[J],2013,33(4):1034-1040.
APA	段剑,杨洁,刘仁林,汪邦稳,&莫明浩.(2013).鄱阳湖滨沙地植物多样性特征.中国沙漠,33(4),1034-1040.
MLA	段剑,et al."鄱阳湖滨沙地植物多样性特征".中国沙漠 33.4(2013):1034-1040.