During these 30 years, YRB surface waters were characterized by spatial and seasonal heterogeneities. The open-surface water coverage in the upper and middle reaches of the YRB was 8.74‰ and 4.24‰, respectively, less than the average coverage in the whole YRB of 9.45‰. Surface water area was significant larger in flood seasons than in dry seasons, while during 1990–2020, the surface water area increased by 27.5% in the flood season and by 58.9% in the dry season, reaching 7239.2 km2 (flood season) and 6654.8 km2 (dry season) in 2020.
Chentai Jiao,
Shuai Wang,
宋爽,
Bojie Fu
