干旱区生态环境知识资源中心(Arid): 干旱区多枝柽柳的生长特性

Arid

	干旱区多枝柽柳的生长特性
其他题名	Growth Characteristics of Tamarix ramosissima in Arid Regions of China
	肖生春; 肖洪浪; 司建华; 刘发民
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2005
卷号	25 期号:5 页码:1012-1016
中文摘要	多枝柽柳是分布最为广泛的柽柳属植物之一,也是维持干旱区荒漠生态系统的关键植物种.本研究运用树轮年代学和树干解析方法,对额济纳地区不同生境条件下多枝柽柳的年轮生长、高生长和地径生长等方面的特征进行初步探讨.多枝柽柳每年形成1个年轮,树盘偏心生长极为普遍,完整树轮大多在10龄以内区域,10龄以外都呈单个或多个不完整年轮生长区.多枝柽柳单枝在1～4年高生长缓慢,4～8龄之间属于快速生长期,10年以上生长速率急剧下降.不同地下水位条件下三组样本径生长年增长速率达到极大值的年龄分别为21、56和74年,水环境条件是影响多枝柽柳径向生长的主要因素.同一年年轮宽度随枝高呈减小趋势.多枝柽柳边材的树轮数一般在3～5轮之间,进入老龄阶段有增加趋势,边材宽度随年龄增长逐渐减小.
英文摘要	Tamarix ramosissima ,one of the most widely distributed plants of its genus . belonged to the key species for maintaining desert ecosystems in arid regions of China. The study adopted dendrochronology and stem analysis to preliminarily exmine such characteristics of Tamarix ramosisssima as annual rings, shoot heights and radial growth under different environments appearing in the Ejian region. It formed one annul ring every year, and commonly presented eccentric below-canopy area around its irnvik ’Tarnarix ramnsissima formed complete tree rings within ten years old and one or multiple incomplete tree rings be-yond ten years old. Tamarix ramosissimu shoots appeared to grow slow within 1~4 years old,quickly with-in 4~8 years old and at a sharply decreased rate beyond 10 years old. The maximum rates of Tamarix ramosissima radial growth appeared at the ages of 21,56 and 74 years in the three sample quadrats at the three water tables and thus water conditions were the major factors affecting Tamarix ramosissima radial growth. In same years,the tree-ring widths of Tamarix ramosissima shoots increased as the shoot positions went upwards. The tree ring number of Tamarix ramosissima sapwood generally turned out to be 3~5 but tended to increase in aged stage,while the sapwood width of Tamarix ramosissima gradually decreased with increased ages.
中文关键词	干旱区 ; 多枝柽柳 ; 生长特性 ; 树木年轮
英文关键词	arid region Tamarix ramosissima growth characteristic tree ring
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:2031820
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206775
作者单位	中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	肖生春,肖洪浪,司建华,等. 干旱区多枝柽柳的生长特性[J]. 中国科学院西北生态环境资源研究院,2005,25(5):1012-1016.
APA	肖生春,肖洪浪,司建华,&刘发民.(2005).干旱区多枝柽柳的生长特性.西北植物学报,25(5),1012-1016.
MLA	肖生春,et al."干旱区多枝柽柳的生长特性".西北植物学报 25.5(2005):1012-1016.