干旱区生态环境知识资源中心(Arid): INFLUENCE OF THE STRUCTURAL FEATURES OF CARAGANA KORSHINSKII ROOT SYSTEM ON SOIL WATER CONTENT AND TAPROOT DIAMETER

Arid

	INFLUENCE OF THE STRUCTURAL FEATURES OF CARAGANA KORSHINSKII ROOT SYSTEM ON SOIL WATER CONTENT AND TAPROOT DIAMETER
	Gao, Yuhan 1; Guo, Yuefeng 1; Yao, Yunfeng 1; Qi, Wei 1,2; Wang, Hui 1; Wang, Jiakun 1; Dong, Xiaoyu 1
通讯作者	Guo, Yuefeng
来源期刊	FRESENIUS ENVIRONMENTAL BULLETIN
ISSN	1018-4619
EISSN	1610-2304
出版年	2020
卷号	29 期号:6 页码:4624-4633
英文摘要	In order to provide theoretical basis to the Caragana korshinskii root system investigation work, with the Caragana korshinskii root system at the farming-pastoral ecotone of Inner Mongolia as the research object, we employ the tracking mining method to investigate the taproot diameter, average length of root systems of various diameter classes and branch number of Caragana korshinskii, and measure the rhizosphere soil water content. Based on that, we discuss the relationship between the structural features of Caragana korshinskii root system and the soil water content and taproot diameter. The results show that as the soil water content increased from 3.5-4.0% to 5.5-6.0%, the ratios of the average lengths of bone root, thick root and fine root declined from 1:0.51:0.14 to 1:0.47:0.13, and the ratios of the branch numbers of bone root, thick root and fine root increases from 1:4.43:34.94 to 1:4.60:37.13; as the taproot diameter increased from 40-50mm to 7080mm, the ratios of the average lengths of bone root, thick root and fine root declined from 1:0.44:0.13 to 1:0.41:0.11, the ratios of the branch numbers of bone root, thick root and fine root increases from 1:5:30 to 1:6:50, and both the average length of root systems of various diameter classes and branch number presented strong correlation with the soil water content. We build the relation model between the structural eigenvalues of root systems of various diameter classes and the soil water content and taproot diam- eter, and obtain R-LG=0.99w(2)-39.82r(2)- 7.12w+38.74r+7.49, R-NG=8.22e(2.03r)-4.24w+5 .56, R-LC=23.45r(2)-0.17w(2) -25.47r+1.40w+6.48, R-NC=52.13, (e(3.53r/w1.24s)), R-Lx=1.66r-0.58In (w)+0.58 and R-NX=246.64e(2.35r)-178.98w+316.44 (in which, R-NG is the average length of bone root, m; RNG is the branch number of bone root, branch; R-LC is the average length of thick root, m; R-NC is the branch number of thick root, branch; R-LX is the average length of fine root, m; R-NX is the branch number of fine root, branch; r is the taproot diameter, m; w is the soil water content, %). Tests indicate that various models can well describe the relationship between the structural features of Caragana korshinskii root systems of various diameter classes in Huanghua Dianzi Basin and the soil water content and taproot diameter. The research results have significant importance to the planting management of artificial caragana forest in arid region, which can provide theoretical basis for the ecological environment construction and vegetation restoration in north farming-pastoral ecotone.
英文关键词	Caragana korshinskii soil water content taproot diameter average length branch number
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000540873900061
WOS关键词	VERTICAL-DISTRIBUTION ; LOESS PLATEAU ; PLANTATION ; FOREST
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319527
作者单位	1.Inner Mongolia Agr Univ, Coll Ecol & Environm Sci, Hohhot 010018, Peoples R China; 2.Design Inst Water Conservancy & Hydroelect Power, Hohhot, Peoples R China
推荐引用方式 GB/T 7714	Gao, Yuhan,Guo, Yuefeng,Yao, Yunfeng,et al. INFLUENCE OF THE STRUCTURAL FEATURES OF CARAGANA KORSHINSKII ROOT SYSTEM ON SOIL WATER CONTENT AND TAPROOT DIAMETER[J],2020,29(6):4624-4633.
APA	Gao, Yuhan.,Guo, Yuefeng.,Yao, Yunfeng.,Qi, Wei.,Wang, Hui.,...&Dong, Xiaoyu.(2020).INFLUENCE OF THE STRUCTURAL FEATURES OF CARAGANA KORSHINSKII ROOT SYSTEM ON SOIL WATER CONTENT AND TAPROOT DIAMETER.FRESENIUS ENVIRONMENTAL BULLETIN,29(6),4624-4633.
MLA	Gao, Yuhan,et al."INFLUENCE OF THE STRUCTURAL FEATURES OF CARAGANA KORSHINSKII ROOT SYSTEM ON SOIL WATER CONTENT AND TAPROOT DIAMETER".FRESENIUS ENVIRONMENTAL BULLETIN 29.6(2020):4624-4633.