Abstract
The Han River valley plays an important strategic role in the water resources allocation system in China. A parallel hybrid approach was used in the study, using both qualitative and quantitative data collection and analysis techniques. Twenty self-administered questionnaires were sent to the heads of the environment bureaus of 17 districts (counties) and 3 cadres of the natural resources bureaus. Three in-depth interviews were conducted with the head of the water authority in the basin. Runoff, water quality and sediment load data were collected over a 17-year period and trends were analyzed using Mann-Kendall and regression analysis statistics to predict future water levels. The results show that the positive linear correlation between runoff R and sediment load is R2 = 0.1718, while the negative linear correlation between sediment load and pH value is R2 = 0.0329. According to the Mann-Kendall analysis(p > 0.05) , no statistically significant trend was found in the data. The study concluded that there was a lack of effective regular interaction and cooperation between water and environmental management at the basin level. Effective Coordination of environmental management remains key to achieving sustainable water resources management in the Han River River Basin.
Highlights
The Shaanxi Provincial Bureau of Ecological Environment and the Bureau of Natural Resources are the leading departments of environment and natural resources in the upper reaches of the Hanjiang River basin
The study area is located in the upper part of the upper Hanjiang River basin in Hanzhong City, Shaanxi Province, and most of it is located in Chenggu County
The average river sediment at the station is 45366 tons, The standard deviation is 50576 tons. m3,280000 runoff 85% of the annual flood volume m3 330000, So June 2005 Sediment levels may be the result of flash floods
Summary
The Shaanxi Provincial Bureau of Ecological Environment and the Bureau of Natural Resources are the leading departments of environment and natural resources in the upper reaches of the Hanjiang River basin. Their activities are guided by the Environmental Protection Law of the people's Republic of China, which is a programmatic law on environmental management in China. The Hanjiang River Basin in Shaanxi Province has three main environmental management departments: the Ecological Environment Bureau, the Natural Resources Bureau and the Water Conservancy Bureau (some areas have not been incorporated into the Natural Resources Bureau). Integrated water resources management is based on four principles developed at the International Conference on Water and the Environment, held in Dublin in 1992 [5]
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