Next Article in Journal
A Coupled Model for Simulating Water and Heat Transfer in Soil-Plant-Atmosphere Continuum with Crop Growth
Next Article in Special Issue
Isotopes in Hydrology and Hydrogeology
Previous Article in Journal
Recent Advances in Water and Wastewater Treatment with Emphasis in Membrane Treatment Operations
Previous Article in Special Issue
Waters from the Djiboutian Afar: A Review of Strontium Isotopic Composition and a Comparison with Ethiopian Waters and Red Sea Brines
Open AccessArticle

Classification of Stable Isotopes and Identification of Water Replenishment in the Naqu River Basin, Qinghai-Tibet Plateau

by 1, 1 and 2,3,*
1
School of Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China
2
Department of Water Conservancy Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
3
Collaborative Innovation Center of Water Resources Efficient Utilization and Support Engineering, Zhengzhou 450046, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(1), 46; https://doi.org/10.3390/w11010046
Received: 29 August 2018 / Revised: 28 November 2018 / Accepted: 24 December 2018 / Published: 28 December 2018
(This article belongs to the Special Issue Isotopes in Hydrology and Hydrogeology)
The stable isotopic study of the mechanism of runoff replenishment in the Qinghai-Tibet Plateau is a time-consuming and complicated process requiring complex monitoring data and scientific evaluation methods. Based on the data of water stable isotopes (18O and 2H) in the Naqu River basin, the present paper developed a framework of the variable fuzzy evaluation model (VFEM) to provide a method to classify stable isotopes and generalize the source identification of water replenishment by rainfall or snowmelt in the Naqu River basin. The grade eigenvalues of tributaries were ranked from low to high as follows: 1, 1.005, 1.089, 1.151, 1.264, 1.455 and 2.624. Three sets of tributaries were distinguished. The grade eigenvalues of the Najinqu, Bazongqu, Mumuqu, Chengqu and Gongqu Rivers were small, indicating that these tributaries were strongly supplemented by precipitation and snowmelt; the grade eigenvalue of the Zongqingqu River was in the medium range (1.455); the third group included the Mugequ River with a high status value (2.624). This study mainly highlighted the combination of the classification of stable isotopes and plots of δ2H vs. δ18O in the source identification of water replenishment, which will be helpful for studying runoff replenishment and the evolution mechanism in the Qinghai-Tibet Plateau. View Full-Text
Keywords: stable isotopes; variable fuzzy evaluation method; water replenishment; Naqu River basin; Qinghai-Tibet Plateau stable isotopes; variable fuzzy evaluation method; water replenishment; Naqu River basin; Qinghai-Tibet Plateau
Show Figures

Figure 1

MDPI and ACS Style

Chen, X.; Wang, G.; Wang, F. Classification of Stable Isotopes and Identification of Water Replenishment in the Naqu River Basin, Qinghai-Tibet Plateau. Water 2019, 11, 46.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop