Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China

doi:10.1007/s11629-017-4719-y

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2018 > Vol15 No.7

	Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China
	Zhong Rong-hua; Hu Jin-ming; Bao Yu-hai; Wang Fei; He Xiu-bin
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2018
卷号	15 期号:7 页码:1498-1509
关键词	Roots distribution Soil nutrients Water level fluctuations Riparian zone Root surface area density Root length density
ISSN号	1672-6316
DOI	10.1007/s11629-017-4719-y
文献子类	Article
英文摘要	Since the impoundment of the Three Gorges Reservoir (TGR), the riparian zone has been subjected to numerous environmental changes. This study was conducted to recognize the distribution of grass roots and its impacts on soil nutrients in the water level fluctuation zone of TGR. Roots of four predominant herbaceous plants in the study area, specifically, Cynodon dactylon, Hemarthria altissima, Hemarthria compressa, and Paspalum paspaloides, and their corresponding relation with soil nutrient contents were investigated. Root surface area density was determined with WinRHIZO, and the relationships of root distribution with soil depths and soil nutrient contents were studied. The results indicates that most roots are distributed in the top soil layer of 0-10 cm. Estimated root surface area density for the selected grass species ranges from 0.16 to 13.44 cm2/cm3, and decreases exponentially with an increase in soil depth. Soil organic matter and total nitrogen contents are significantly lower on bare control area than the corresponding values on the grasslands. Total nutrient contents on grasslands of C. dactylon and H. compressa are higher than those of other grass areas. Root length density and root surface area density are significantly correlated with soil organic matter and total nitrogen content for the four grasslands. The present results suggests that plant roots have significant effects on the distribution of soil nutrients in soil profiles in the riparian zone along the TGR. Nevertheless, additional investigations are needed to reveal the specific interactions between plant roots distribution, soil nutrients and water level fluctuations.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000438468900009
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/35547]
专题	Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.7
推荐引用方式 GB/T 7714	Zhong Rong-hua,Hu Jin-ming,Bao Yu-hai,et al. Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(7):1498-1509.
APA	Zhong Rong-hua,Hu Jin-ming,Bao Yu-hai,Wang Fei,&He Xiu-bin.(2018).Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China.JOURNAL OF MOUNTAIN SCIENCE,15(7),1498-1509.
MLA	Zhong Rong-hua,et al."Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China".JOURNAL OF MOUNTAIN SCIENCE 15.7(2018):1498-1509.