干旱区生态环境知识资源中心(Arid): 风沙干扰在濒危植物沙生柽柳群落形成演变过程中的作用

Arid

	风沙干扰在濒危植物沙生柽柳群落形成演变过程中的作用
其他题名	Role of Wind-Sand Disturbance in the Formation and Development of Tamarix taklamakanensis Community
	何兴东; 高玉葆; 任安芝
来源期刊	植物学报
ISSN	1672-6650
出版年	2003
卷号	45 期号:11 页码:1285-1290
中文摘要	风沙干扰影响沙生柽柳(Tamarix taklamakanensis M.T.Liu)群落形成、发展和衰亡的全过程。经8年的调查、试验和探索后认为,沙生柽柳群落形成于低湿风蚀洼地,发展于沙埋地,死亡于风蚀地和重度沙埋地。在群落形成初期,风蚀形成的洼地为沙生柽柳种子发芽生根创造了适宜的生境,但高矿化度水胁迫使得沙生柽柳幼苗保存率较低;在群落发展期,沙埋促使沙生柽柳灌丛茁壮生长;在群落衰落期,风蚀或沙埋导致沙生柽柳灌丛消亡。即在沙生柽柳群落的形成发展过程中,风沙干扰具有促进作用;而在沙生柽柳群落的衰落过程中,风沙干扰则具有加速衰亡的作用。此外,结合沙生柽柳生境分析认为,在高干扰和高胁迫情况下,荒漠地区耐胁迫的沙丘先锋植物仍可以生存,这一结果是对CSR对策的补充。
英文摘要	Formation, development and degeneration of Tamarix taklamakanensis M.T. Liu community may be affected by wind-sand disturbance. On the basis of field survey and experiments that took eight years from 1994, it was found that the plant community was formed in wet and low-lying land, developed in sand burying land, and died out in the land with strong wind erosion and severe sand burying. In the initial stage of the community formation, the low-lying land that was formed by wind erosion provided a suitable habitat for seed germination and plant rooting, but salt stress from ground water reduced seedling survival rate. In the developing stage of the community, sand burying stimulated vigorous growth of the shrubs. In the degenerative stage of the community, the wind erosion and sand burying resulted in dying out of the shrubs. It is therefore concluded that wind-sand disturbance has a positive role in the formation and development of the community, and is in a close association with the process of the community degeneration. Taking the habitat of T. taklamakanensis into account, it may be appropriate to note that, under the conditions of frequent disturbance and severe stress, desert pioneer species are adaptable and able to survive. This might be a supplement to the CSR strategy.
中文关键词	塔克拉玛干沙漠 ; 沙生柽柳 ; 风沙干扰 ; 群落形成与演化 ; 植物对策
英文关键词	Takla Makan Tamarix taklamakanensis wind-sand disturbance community formation and development plant strategy
语种	英语
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:1270358
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204582
作者单位	College of Life Sciences, Nankai University, TianJin 300071, China
推荐引用方式 GB/T 7714	何兴东,高玉葆,任安芝. 风沙干扰在濒危植物沙生柽柳群落形成演变过程中的作用[J],2003,45(11):1285-1290.
APA	何兴东,高玉葆,&任安芝.(2003).风沙干扰在濒危植物沙生柽柳群落形成演变过程中的作用.植物学报,45(11),1285-1290.
MLA	何兴东,et al."风沙干扰在濒危植物沙生柽柳群落形成演变过程中的作用".植物学报 45.11(2003):1285-1290.