干旱区生态环境知识资源中心(Arid): 不同林龄胡杨克隆繁殖根系分布特征及其构型

Arid

	不同林龄胡杨克隆繁殖根系分布特征及其构型
其他题名	Cloning root system distribution and architecture of different forest age Populus euphratica in Ejina Oasis
	黄晶晶 1; 井家林 1; 曹德昌 2; 张楠 1; 李景文 1; 夏延国 1; 吕爽 1
来源期刊	生态学报
ISSN	1000-0933
出版年	2013
卷号	33 期号:14 页码:4331-4342
中文摘要	以中龄林和成熟林胡杨为研究对象,采用挖剖面和根窗的方法,研究胡杨繁殖根系分布、根系构型,以及胡杨根蘖与繁殖根系构型之间的关系。结果表明:(1)细根(d<2 mm)的根长密度、根表面积密度,随深度增加呈现指数函数分布;(2)中龄林细根的根长密度、根表面积密度在0-90 cm各层都是显著大于成熟林的对应指标(P<0.05),成熟林的中等粗根(5 mm0.05),且两种林龄的一级侧根数、分枝角度亦无显著差异(P>0.05);(5)对比两种林龄不同根序上的根蘖芽发现,二级根上不定芽个数均是同组一级根上不定芽个数的3-4倍;基于以上对胡杨根系的功能权衡的分析,得出:细根对胡杨根系构型有重要的影响,在胡杨根系功能权衡中扮演重要角色。
英文摘要	Plant population regeneration is of great importance for restoration of degraded ecosystems and preservation of biodiversity in the extreme arid region. The effects of soil environment on the characters and sprouting of propagative root of populus euphratica were investigated to elucidate the development mechanism of adventitious buds and root suckers. It was contributive to ameliorate the regeneration of the degraded riparian forest in the Northwest of China. Based on the investigation on soil profile and rhizotron in middle-aged and mature-aged Populus euphratica forest, the cloning root distribution characteristics, the root architecture, and the relationship between the sucker root and propagative root architecture were analyzed. Results show that: (1) with the increasing of the soil depth, the root length density (RLD) and root surface Area density (SAD) of fine root (d<2 mm) present the exponential function. (2) In different depths among 0-90 cm, the RLD and SAD of the fine root in middle-aged forest were significantly larger than the ones in mature-aged forest (P<0.05). However, in 70-90 cm (deeper layers) and 40-50 cm (shallower layers), the RLD and SAD of the middle-sized thick roots (5 mm
中文关键词	胡杨 ; 根长密度 ; 根表面积密度 ; 根系分布 ; 根系构型
英文关键词	Populus euphratica root length density root surface area density root distribution root architecture
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4895622
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230010
作者单位	1.北京林业大学, 森林培育与保护教育部重点实验室, 北京 100083, 中国; 2.北京林业大学生物学院, 北京 100083, 中国
推荐引用方式 GB/T 7714	黄晶晶,井家林,曹德昌,等. 不同林龄胡杨克隆繁殖根系分布特征及其构型[J]. 北京林业大学,2013,33(14):4331-4342.
APA	黄晶晶.,井家林.,曹德昌.,张楠.,李景文.,...&吕爽.(2013).不同林龄胡杨克隆繁殖根系分布特征及其构型.生态学报,33(14),4331-4342.
MLA	黄晶晶,et al."不同林龄胡杨克隆繁殖根系分布特征及其构型".生态学报 33.14(2013):4331-4342.