Changes and Driving Forces of the Water-Sediment Relationship in the Middle Reaches of the Hanjiang River
AbstractRiverine sediment transport plays an important role in the global geochemical cycle. With a growing interest in global riverine environmental changes, a better understanding of water-sediment relationship dynamics and their driving forces is crucial for basin management, which is particularly associated with cascade dam construction. In this contribution, a simple and effective sediment load reduction factor analysis is used to attribute the changes in river sediment load to different drivers. The Mann–Kendall (MK) trend test and the double-mass curve (DMC) method were combined to reveal the trends and causes of change in the water-sediment relationship from 1965 to 2015 in the middle reaches of the Hanjiang River. We found that sediment load trend decreased significantly, which was caused by a decrease in water yield (5.05%), and the relative contributions of precipitation decrease (1.66%). Furthermore, only one mutation could be identified in 1974 at Huangzhuang station. Evapotranspiration and vegetation coverage had slight decreasing effects on sediment load. The impact of human activities on the water-sediment relationship has intensified over the past 15 years. We therefore propose the establishment of an integrated basin-wide ecosystem and optimized reservoir operation rule for sustainable water use and sediment regulation. View Full-Text
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Lu, X.; Wang, X.; Yang, C.; Liu, X.; Yang, Q. Changes and Driving Forces of the Water-Sediment Relationship in the Middle Reaches of the Hanjiang River. Water 2018, 10, 887.
Lu X, Wang X, Yang C, Liu X, Yang Q. Changes and Driving Forces of the Water-Sediment Relationship in the Middle Reaches of the Hanjiang River. Water. 2018; 10(7):887.Chicago/Turabian Style
Lu, Xiaorong; Wang, Xuelei; Yang, Chao; Liu, Xi; Yang, Qing. 2018. "Changes and Driving Forces of the Water-Sediment Relationship in the Middle Reaches of the Hanjiang River." Water 10, no. 7: 887.
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