Water Resource Evaluation Research Based On The Perspective Of Water Footprint

Water resource shortage problem has become the world to be solved urgently.Measuring the utilization of water resources correctly has been an urgent task to solve the sustainable utilization of water resources.Water footprint is a new effective tool which connects real water and virtual water in the area of water,so it can measure the human activities on the resource usage more accurately,providing a new train of thought for water resources management decision.Based on the perspective of water footprint,the condition of Minjiang river water resources was studied in this paper.First of all,the calculation results showed that the water footprint of Minjiang river basin maintained between 23.1855 billion m3 and 23.1855 billion m3,having a growing trend as a whole,far more than the amount of water resources showed in the water bulletin.Agricultural production of virtual water was from 13.2371 billion m3 to 15.6974 billion m3,growing by 18.59%,consuming most of the water resources,with a rising trend in the proportion of water footprint.Industrial production water consumption was from 2.4625 billion m3 to 4.373 billion m3,increasing by 77.62%;Water pollution footprint in the year of study overall rose from 6.929 billion m3 to7.335 billion m3;Domestic water consumption changing trend was Relatively stable;Ecological use of water resources had low proportion,only accounting for 0.94%;Virtual water net exports grew rapidly as a whole,virtual water export trade trend gradually enhanced.Secondly,based on the water footprint theory analysis of the water resources evaluation index system,the results indicated:the structure of the water footprint index analysis showed that its self-sufficiency rate of Minjiang River water resources was very high,water resource could be highly self-sufficient.By analyzing internal benefit index,the average per capita water footprint was higher than that of China and the world's average level,lower than the European and American developed countries;Water footprint economic value increased rapidly year by year;Among them,the three major industries of water footprint benefit all had very big rise,the water footprint of the second and third industry benefit value were much higher than the first industry;Water pollution rate values were lower than 1,which showed that Minjiang River water resources could effectively dilute the pollutants with the existing water;By analyzing external benefit index,2002-2011 water footprint net trade of the Minjiang River basin showed a trend of fluctuations rise on the whole,exports of virtual water were greater than imports of virtual water,belonging to the outgoing water output,but the contribution of water resources was still small.By analyzing Water footprint safety index,water resources pressure index and the water shortage were both upward trend overall,but still didn't exceed the water ecological system load.By analyzing water footprint coordinated economic,the results showed that minjiang river basin water footprint consumption rate was lower than the average growth rate during this period,presenting the state of weak decoupling primary coordination overall.Through water footprint social fairness index analysis,both the gini coefficient of water footprint—population and water footprint—GDP didn't exceed the distribution of average line,but the matching degree of water footprint consumption and population was superior to that of water footprint and GDP.Finally,IP AT model was applied to analysis driven factors and scenario prediction of Minjiang River basin's water footprint,it showed that the change of economic growth factors played a dominant positive drive on growth of amount of river basin water footprint,while technology progress factors played an important buffer role on the total water footprint growth,the effect of population scale factor was relatively small.Through the comparison and analysis of the six scenarios,it was concluded that when the average annual GDP growth continued to grow,water footprint intensity remained unchanged,then the water resources system of Minjiang river basin would face great pressure in this case.