干旱区生态环境知识资源中心(Arid): 石羊河流域荒漠区主要固沙植物根系研究

Arid

	石羊河流域荒漠区主要固沙植物根系研究
其他题名	Root System of the Main Sand Fixing Plants in Desert Zone of Shiyanghe River Basin
	柴成武 1; 徐先英 1; 唐卫东 1; 王方琳 1; 王龙 2
ISSN	1001-7461
出版年	2009
卷号	24 期号:4 页码:21-26
中文摘要	应用分层半挖法研究了石羊河流域荒漠区主要固沙植物梭梭、红柳、白刺吸水根系根重密度分布规律、根系表面积变化规律以及与对应的微环境因子相关性.结果表明:梭梭、红柳、白刺根系长度受粘土层阻碍较大,随着植物根区粘土层的出现,粘土层以上靠近粘土层根系密度增大,粘土层以下远离粘土层根系密度先增大再减小,但物种不同,呈现这种规律的根级并不相同,梭梭表现为小于1 mm根系,红柳和白刺表现为1～2 mm根系与2～5 mm根系;根系表面积变化亦具有这种特点.土壤容重对荒漠植物根系影响较大,土壤分形维数、土壤含水率和土壤有机质含量与对应的根系指标显著性不高.
英文摘要	The distribution regularity of the density, variations of surface areas of fine roots, as well as their correlationship with related micro-environmental factors of some major sand-fixation plants were investigated, such as Haloxylon ammodendron, Tamarix ramosissima , and Nitraria sibirica in Shiyanghe River basin by layered and half digging method. The results showed that the main root length were obstructed by clay layer. The root weight density increased when it reached the first clay layer and increased firstly, then decreased when it went through the clay layer. But diameter-classes were different among different plant species, 1 mm diameter class was embodied for H, ammodendron, and 1～2 mm, 2～5 mm for T. ramosissima , and N. sibirica. There was the same rule as root weight density. The correlation analysis to the root index and its environmental factors showed that soil bulk density influenced root growth largely, and there was not direct significant correlation between root amount and soil fractal dimension, soil moisture content and soil organic matter.
中文关键词	梭梭 ; 柽柳 ; 白刺 ; 根系
英文关键词	Haloxylon ammodendron Tamarix ramosissima Nitraria sibirica root
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:3606147
来源机构	甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224314
作者单位	1.甘肃省治沙研究所, 武威, 甘肃 733000, 中国; 2.古浪县水土保持工作站, 古浪, 甘肃 733100, 中国
推荐引用方式 GB/T 7714	柴成武,徐先英,唐卫东,等. 石羊河流域荒漠区主要固沙植物根系研究[J]. 甘肃省治沙研究所,2009,24(4):21-26.
APA	柴成武,徐先英,唐卫东,王方琳,&王龙.(2009).石羊河流域荒漠区主要固沙植物根系研究.,24(4),21-26.
MLA	柴成武,et al."石羊河流域荒漠区主要固沙植物根系研究".24.4(2009):21-26.