干旱区生态环境知识资源中心(Arid): 鄱阳湖沙地种子植物科属组成及地理成分

Arid

	鄱阳湖沙地种子植物科属组成及地理成分
其他题名	Composition and geographical elements of families and genera of spermatophyte in Poyang Lake sandy land
	段剑 1; 杨洁 1; 莫明浩 2; 肖胜生 2; 宋月君 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2013
卷号	27 期号:12 页码:100-105
中文摘要	现场调查及统计结果表明:(1)鄱阳湖沙地种子植物共计115种,隶属于50科,92属,占江西省种子植物总科数的16.50%、总属数的7.47%、总种数的2.79%,双子叶植物占主导地位,多样性不丰富,在属、种层次上尤其突出;(2)科属组成都是以单种型占优势,科具有一定的优势现象,主要为禾本科、菊科、大戟科和蝶形花科植物,属优势现象不明显,分化程度低,植被组成简单,系统脆弱性强,易受自然和人为因素的影响,加剧土地的风沙化现象;(3)研究区沙地植物属的地理成分比科要丰富,但总体上,表现出很大的一致性,都具有明显的热带属性,无特有现象,这与其所在区域的热带性气候相符,此外,与其所在的庐山、赣西北区系相比较,具有明显的自身特点:热带性成分突出,温带性成分占从属地位,世界分布型属的比重相对较大。
英文摘要	The local flora composition and geographical distribution characteristics of seed plant in Poyang Lake desert were studied by processing the data,analyzing plant families and genera and applying the methods of botany and phytogeography.The results showed that: (1) There are 50 family,92 genera and 115 species in Poyang Lake sandy land,which reached 16.50%,7.47% and 2.79% of total seed plants in Jiangxi Province respectively which belong to 92 genera and 50 families.Dicotyledon play dominant role in seed plants in survey region.The species diversity is not abundant,especially in the level of genera and species.(2) Single family and single genera are superior in the composition of family and genera.The family dominance is obvious which are Gramineae, Compositae,Rosaceae,Euphorbiaceae and Papilionaceae.But the genera dominance is unconspicuous and no obvious differentiation.These result in simple vegetation composition and vulnerable ecosystem.The desertification is being aggravated owing to natural and human factors.(3) The geographical elements of genera are more abundant than the family.However,they show a lot of consistency which has obvious tropical property and has no endemism.The phenomenon is consistent with sub - tropical climate.Moreover,compared with the flora of Lushan and Northwest of Jiangxi,survey region has obvious its own characteristics that tropical elements dominate the whole seed plants,temperate element takes subordinate position,and the widespread types take large proportion.
中文关键词	种子植物 ; 科属 ; 地理成分 ; 鄱阳湖沙地
英文关键词	spermatophyte families and genera geographical elements poyang Lake sandy land
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:4961779
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229669
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.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,莫明浩,等. 鄱阳湖沙地种子植物科属组成及地理成分[J],2013,27(12):100-105.
APA	段剑,杨洁,莫明浩,肖胜生,&宋月君.(2013).鄱阳湖沙地种子植物科属组成及地理成分.干旱区资源与环境,27(12),100-105.
MLA	段剑,et al."鄱阳湖沙地种子植物科属组成及地理成分".干旱区资源与环境 27.12(2013):100-105.