Abstract
Taking the source region of the Yellow River as an example, this paper first introduces the theory of energy value and its basic steps. Then combined with the Yellow River source area, the variation characteristics of precipitation and surface water resources from 1961 to 2011 in the Yellow River source area were analyzed, and both of them showed a trend of decreasing year by year. On this basis, using the theory of energy value, combined with relevant parameters, taking 2011 year as an example, further analyses the chemical energy and solar energy of water resources in the Yellow River source area, and gives the value of surface water resources. The value of water resources per unit is 1.59 yuan/m3. For the Yellow River source area, the overall value of water resources for the whole basin in 2011 is 33.55 billion yuan. It can provide a reference for the analysis of the value of surface water resources in the Yellow River Basin.
Highlights
With the rise of the quantitative research on the value of ecosystem services to natural capital, the ecological service function of water has received increasing attention
How to quantify the resource and environmental value and its effects in the composite system, and explore an objective scale to measure the logistics, energy flow and value flow to achieve the integration of society, economy and ecology, which is the key to solving the water resource problem
Based on the natural attributes of hydrological cycle and water resources, this paper quantitatively studies the value of natural water resources by using energy value analysis method, and proposes an energy value assessment method based on emergy theory for natural water resources value, which can be used for sustainable use of water resources
Summary
With the rise of the quantitative research on the value of ecosystem services to natural capital, the ecological service function of water has received increasing attention. How to objectively understand and measure the true value of water resources, as well as quantitative, objective and scientific evaluation of the structural state of water resources composite systems, is the basis for formulating countermeasures for sustainable use and management of water resources. Relevant scholars carried out water ecological service function evaluation, estimated the total value of water ecosystem, and analyzed the ecological economy and sustainable assessment of resources at different time and space scales. The theory and method of value (Emergy) is a theory and method developed on the basis of system ecology and ecosystem energetics. It is a new theoretical system for quantitatively measuring the value of natural resources.
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