The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China

ISL OpenIR > 青海盐湖研究所知识仓储

	The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China
	Fu Jiang-tao 1,2; Hu Xia-song1,3 ; Brierley, Gary 4; Qiao Na 3; Yu Qin-qin 3; Lu Hai-jing 3; Li Guo-rong 3; Zhu Hai-li 1,2
	2016-05-01
发表期刊	JOURNAL OF MOUNTAIN SCIENCE
卷号	13 期号:5 页码:785-801
关键词	Cold Region Semiarid Region Soil Reinforcement Hillslope Stability Root System Architectural Indices Plateau
摘要	To investigate the influence of root system architectural properties of three indigenous (cold-adapted) shrubs on the hillslope stability of loess deposits in the Xining Basin, northeast part of Qinghai-Tibet Plateau (QTP), indoor direct shear tests have been conducted on the remolded rooted soil of three shrubs. Test results show that root system architectural indices (root area ratio (RAR), root length density (RLD) and root density (RD)) of the shrubs decline with depth and the relationship between RAR, RD and depth is exponential, while a power relationship describes the relationship between RLD and depth. The cohesion force of remolded rooted soil for the shrubs initially increases with depth, but it then demonstrates a slightly decreasing trend, which can be described with a power relationship. Power relationships also describe relationships between cohesion force and RAR, RLD and RD for the shrubs. As the growth period increases from 10 to 17 months, the incremental increase in RAR is 48.32% similar to 210.25% for Caragana korshinskii Kom and 0.56% similar to 166.85% for Zygophyllum xanthoxylon (Bunge) Maxim. This proportional increase is notably larger than that for RLD and RD. The increment in RAR is marginally greater for C. korshinskii than it is for Z. xanthoxylon. Correspondingly, the cohesion force incremental rates of remolded rooted soil for C. korshinskii and Z. xanthoxylon are 12.41% similar to 25.22% and 3.45% similar to 17.33% respectively. Meanwhile, as root content increases, the contribution by roots to cohesion force increases markedly until a threshold condition is reached.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6318
专题	青海盐湖研究所知识仓储盐湖地质与环境实验室
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Qinghai Univ, Dept Geol Engn, Xining 810016, Qinghai, Peoples R China 4.Univ Auckland, Sch Environm, Private Bag 92019, Auckland 1142, New Zealand
推荐引用方式 GB/T 7714	Fu Jiang-tao,Hu Xia-song,Brierley, Gary,et al. The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2016,13(5):785-801.
APA	Fu Jiang-tao.,Hu Xia-song.,Brierley, Gary.,Qiao Na.,Yu Qin-qin.,...&Zhu Hai-li.(2016).The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China.JOURNAL OF MOUNTAIN SCIENCE,13(5),785-801.
MLA	Fu Jiang-tao,et al."The influence of plant root system architectural properties upon the stability of loess hillslopes, Northeast Qinghai, China".JOURNAL OF MOUNTAIN SCIENCE 13.5(2016):785-801.