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Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China
Zhong Ronghua1,2; Hu Jinming1,2; Bao Yuhai3; Wang Fei1,2; He Xiubin3
Corresponding AuthorHe Xiubin
2018
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume15Issue:7Pages:1498-1509
SubtypeArticle
Contribution Rank3
AbstractSince 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.
KeywordRoots distribution Soil nutrients Water level fluctuations Riparian zone Root surface area density Root length density
DOI10.1007/s11629-017-4719-y
Indexed BySCI
Language英语
Quartile4区
TOP
WOS IDWOS:000438468900009
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23471
Collection山地表生过程与生态调控重点实验室
Affiliation1.Yunnan Key Laboratory of International Rivers and Transboundary Eco–security, Kunming 650091, China;
2.Institute of International Rivers and Eco–security, Yunnan University, Kunming 650091, China;
3.Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
Recommended Citation
GB/T 7714
Zhong Ronghua,Hu Jinming,Bao Yuhai,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 Ronghua,Hu Jinming,Bao Yuhai,Wang Fei,&He Xiubin.(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 Ronghua,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.
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