Abstract
Research on water pricing is important to effectively address the water resource crisis. The agricultural industry has the greatest water-saving potential. Using Heilongjiang Province, the main grain-producing region in China, as an example, an agricultural irrigation water price was determined based on macro and micro scales, and affordable water prices for peasants were calculated. The results show a macro-agricultural irrigation water price of 1.023 yuan/m3, indicating that the current agricultural irrigation water price does not reflect the water source value. The micro-agricultural irrigation water prices for surface water and groundwater range from 0.993 to 1.008 and from 2.343 to 2.358 yuan/m3, respectively, indicating differences in cost recovery and value. The surface water prices for maize, rice, and soybeans ranged from 0.286 to 0.476, from 0.101 to 0.179, and from 0.180 to 0.307 yuan/m3, respectively, while the appropriate groundwater prices ranged from 0.317 to 0.507, from 0.131 to 0.210, and from 0.211 to 0.337 yuan/m3, respectively. The government could formulate different subsidy policies according to the actual situation and raise agricultural irrigation water prices to the full-cost level to enable the implementation of law of value.
Highlights
Water is an indispensable natural resource for human survival and development
The micro-agricultural irrigation water price for surface water and groundwater in the study area ranged from 0.993 to 1.008 and from 2.343 to 2.358 yuan/m3, respectively. These results clearly show that the current agricultural irrigation water price of 0.02–0.05 yuan/m3 is too low for cost recovery
This paper describes research on the progress of agricultural irrigation water pricing, with price determined at both the macro and micro scale
Summary
Water is an indispensable natural resource for human survival and development. The continuous development of socioeconomic water demand, water resource shortages, degradation of the water environment, and water security issues are becoming increasingly serious. Willingness to pay for water [3] as a reference for pricing. As relevant research has progressed, the value of water resources has attracted attention. It was proposed in [4] that the essence of value was in the capitalization of water resource rent, upon which the differences in price and value of water resources would be clarified. Scholars have estimated the value of water resources by employing equilibrium pricing [5], value mosaic [6], emergy estimation [7], and fuzzy comprehensive evaluation [8]. There is clear theoretical and empirical evidence that using price to manage water demand is more cost-effective than other approaches [9]. The rational pricing of agricultural irrigation water has become the focus [11,12,13,14]
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