Temporal and spatial characteristics of water resources in the Yeerqiang River Basin based on remote sensing

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Abstract

Surface water resources play an important role in the economic and social developments as well as the protection of natural ecological environment in the Yeerqiang River Basin. Based upon the six stages of land use data from 1990 to 2015, the temporal and spatial variation of surface water resources in the Yerqiang River Basin have been explored and analyzed. The results show that: (1) From 1990 to 2015, the area of natural landscape initially increased and then decreased, while the area of artificial landscape increased, which caused a slight increase in the land use degree in the study area. (2) The dynamic changes of water and glacier areas are somewhat consistent over the past 25 years, with a sharp decline between 2005-2010 and a small increase in the remaining years. The dynamic changes in areas of non-glacial water were moderate, with decrease in area of 9 km2 from 1990 to 2015. The beach area decreased, and the other water sub-classes initially increased and then decreased. (3) Over the past 25 years, the proportion of unchanged water area is 73.22%, the transfer-out proportion is 19.19%, and the transfer-in proportion is 7.59%. Generally, water types transferred to grassland and unused land. Additionally, significant transfers were observed for the conversions between glaciers and woodland, conversions between canal, lake, reservoir and beach, and conversions between beach and farmland.

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Ran, Q. Y., Bai, L. Y., Feng, J. Z., Yang, Y. M., Guo, M. Q., Li, H. L., … Cao, D. (2017). Temporal and spatial characteristics of water resources in the Yeerqiang River Basin based on remote sensing. In IOP Conference Series: Earth and Environmental Science (Vol. 74). Institute of Physics Publishing. https://doi.org/10.1088/1755-1315/74/1/012020

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