Study on the river water rights confirmation and allocation based on watershed in county-level units
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Abstract:
River water rights determination is an important measure for efficient use of water resources.Based on the Hydro30 high precision global river network,and the county-level administrative unit of Qinghai Province as the basic confirmation unit for water rights.The calculation and allocation method of the annual average runoff,the annual average ecological and environmental water requirement,the water requirement forecast,and the control red line of the total water consumption were proposed.For the first time,the river ecological and environmental water requirement were divided into the minimum river ecological water demand and the river′s suitable ecological environment water demand.The control red line of the total water consumption at the county-level was determined using decomposition ratio method and water requirement adjustment method.Based on the control red line of the total water consumption,future water requirement,the available river water resources and groundwater,the county-level watertaking rights were determined.The county-level river water taking rights were determined by respecting historical water use and current water use principles,ecological equity principles,fairness and efficiency principles,sustainable use principles,and optimal allocation principles.For the confirmation unit that the river′s self-produced water quantity cannot meet the water demand,the confirmation unit could use the upstream transit water in the basin,but the upper limit of water withdrawal was still the control red line of the total water consumption.The maximum and suitable river water taking rights of 46 allocation unit in Qinghai Province in 2020 and 2030 were obtained (for example,the river water rights in Xining City).For the first time,river water taking right was confirmed and allocated in county-level units,which can provide reference for the determination of river water rights in other regions.River water rights determination is an important measure for efficient use of water resources.Based on the Hydro30 high precision global river network,and the county-level administrative unit of Qinghai Province as the basic confirmation unit for water rights.The calculation and allocation method of the annual average runoff,the annual average ecological and environmental water requirement,the water requirement forecast,and the control red line of the total water consumption were proposed.For the first time,the river ecological and environmental water requirement were divided into the minimum river ecological water demand and the river′s suitable ecological environment water demand.The control red line of the total water consumption at the county-level was determined using decomposition ratio method and water requirement adjustment method.Based on the control red line of the total water consumption,future water requirement,the available river water resources and groundwater,the county-level watertaking rights were determined.The county-level river water taking rights were determined by respecting historical water use and current water use principles,ecological equity principles,fairness and efficiency principles,sustainable use principles,and optimal allocation principles.For the confirmation unit that the river′s self-produced water quantity cannot meet the water demand,the confirmation unit could use the upstream transit water in the basin,but the upper limit of water withdrawal was still the control red line of the total water consumption.The maximum and suitable river water taking rights of 46 allocation unit in Qinghai Province in 2020 and 2030 were obtained (for example,the river water rights in Xining City).For the first time,river water taking right was confirmed and allocated in county-level units,which can provide reference for the determination of river water rights in other regions.
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