Next Article in Journal
Numerical Investigation on Infiltration and Runoff in Unsaturated Soils with Unsteady Rainfall Intensity
Previous Article in Journal
Vulnerability Assessment to Trihalomethane Exposure in Water Distribution Systems
Previous Article in Special Issue
Response of Sediment Load to Hydrological Change in the Upstream Part of the Lancang-Mekong River over the Past 50 Years
Article Menu

Export Article

Open AccessArticle
Water 2018, 10(7), 913; https://doi.org/10.3390/w10070913

Distribution Characteristics of Phosphorus in the Yarlung Zangbo River Basin

State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
*
Authors to whom correspondence should be addressed.
Received: 29 May 2018 / Revised: 29 June 2018 / Accepted: 30 June 2018 / Published: 11 July 2018
(This article belongs to the Special Issue Water Quality: A Component of the Water-Energy-Food Nexus)
View Full-Text   |   Download PDF [2556 KB, uploaded 11 July 2018]   |  

Abstract

Phosphorus is an important limiting biogenic material. The special topography and climate of the Yarlung Zangbo River Basin generate unique distribution and transport characteristics of total phosphorus (TP). A survey of TP concentration, precipitation, runoff, sediment content, suspended load discharge, and relevant data was carried out for the Yarlung Zangbo River Basin in the last ten years. In combination with the regional geography and social economies, the basic spatial-temporal characteristics of P-water-sediment were analyzed by using the correlation and time series analysis methods. Furthermore, the transport characteristics of P and the main control factors were also studied. The results show that the TP concentration in this basin displays the characteristics of interannual cyclical variation and annual phasic variation, and the peak value appears in the wet season. Among the Yarlung Zangbo River, Nyangqu River, Lhasa River, and Nyang River, the TP concentration is the highest in the Nyangqu River, exceeding 0.4 mg/L several times in the wet season. In this basin, the distribution patterns of the TP concentration are similar to those of the rainfall, runoff, suspended load discharge, and sediment concentration. The coupling property of the TP concentration is the strongest with the suspended load discharge among the meteorological and hydrological parameters. The spatial variation of dissolved P in the wet and dry seasons in 2016 responded to the distribution patterns of the population density, environmental factors, farming, and animal husbandry. This indicates that the TP in the water is mainly from non-point sources and is affected by agricultural, geographical, and ecological factors. The transport of TP is mainly controlled by the suspended load discharge due to precipitation. View Full-Text
Keywords: Yarlung Zangbo River; phosphorus; spatial-temporal distribution Yarlung Zangbo River; phosphorus; spatial-temporal distribution
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Nan, S.; Li, J.; Zhang, L.; An, R.; Pu, X.; Huang, W. Distribution Characteristics of Phosphorus in the Yarlung Zangbo River Basin. Water 2018, 10, 913.

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.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top