Next Article in Journal
What Is the Suitable Sampling Frequency for Water Quality Monitoring in Full-Scale Constructed Wetlands Treating Tail Water?
Previous Article in Journal
Dew Evaporation Amount and Its Influencing Factors in an Urban Ecosystem in Northeastern China
 
 
Article

Spatiotemporal Evaluation of Blue and Green Water in Xinjiang River Basin Based on SWAT Model

1
School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
2
Jiangxi Provincial Institute of Water Sciences, Nanchang 310029, China
*
Author to whom correspondence should be addressed.
Academic Editor: Liudmila S. Shirokova
Water 2022, 14(15), 2429; https://doi.org/10.3390/w14152429
Received: 6 July 2022 / Revised: 31 July 2022 / Accepted: 3 August 2022 / Published: 5 August 2022
(This article belongs to the Section Water Quality and Contamination)
Poyang Lake is the largest freshwater lake in China. As an important tributary of Poyang Lake, Xinjiang River has an important influence on the water ecology and water resources of the Poyang Lake basin. Based on the hydrological simulation of the SWAT (Soil and Water Assessment Tool) model, the spatiotemporal distribution and evaluation of the blue and green water during the period (1982–2016) in the basin were explored by the Mann–Kendall test, precipitation anomaly percentage, and scenario simulation. It is found that the SWAT model presents a satisfactory performance in runoff simulation of the basin. The multi-year average blue water in the Xinjiang River basin is 1138 mm, and the green water is 829 mm, with a green water coefficient of 0.42. The amount of blue water in wet years is about 1.5 times that in normal years and 2.4 times that in dry years. Compared with the green water, the blue water of the basin is more sensitive to the variations in precipitation. In spatial distribution, the blue and green water in the middle of the basin is obviously more than those in other parts of the basin. During the study period, the blue water in the basin shows a slight decreasing trend, and the green water shows a significant decreasing trend. It is also found that climatic factors have a greater influence on the trend of blue and green water than land use, and the decrease in precipitation is the dominant cause for the trend of blue and green water. View Full-Text
Keywords: SWAT; blue water; green water; spatiotemporal distribution; trend analysis; Xinjiang River Basin SWAT; blue water; green water; spatiotemporal distribution; trend analysis; Xinjiang River Basin
Show Figures

Figure 1

MDPI and ACS Style

Zhang, X.; Jiang, C.; Huang, J.; Ni, Z.; Sun, J.; Li, Z.; Wen, T. Spatiotemporal Evaluation of Blue and Green Water in Xinjiang River Basin Based on SWAT Model. Water 2022, 14, 2429. https://doi.org/10.3390/w14152429

AMA Style

Zhang X, Jiang C, Huang J, Ni Z, Sun J, Li Z, Wen T. Spatiotemporal Evaluation of Blue and Green Water in Xinjiang River Basin Based on SWAT Model. Water. 2022; 14(15):2429. https://doi.org/10.3390/w14152429

Chicago/Turabian Style

Zhang, Xudong, Cong Jiang, Junzhe Huang, Zhenyu Ni, Jizhou Sun, Zuzhong Li, and Tianfu Wen. 2022. "Spatiotemporal Evaluation of Blue and Green Water in Xinjiang River Basin Based on SWAT Model" Water 14, no. 15: 2429. https://doi.org/10.3390/w14152429

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop