Analysis Of The Balance Of Supply And Demand Of Water Resources In The China Silk Road Economic Belt

Since the industrial revolution,the rapid development of science and technology,human beings have more social wealth at the same time also brought a series of ecological environment problems.It is necessary to give priority to balance the supplying and demanding of water resource.It is also necessary to implement water resources optima allocation to ensure the sustainable development of economy and society in our country.During the 2013 President Xi jinping’s visit to central Asia,the association of south-east Asian nations(asean),he proposed the thoughts of "building the silk road economic belt" and the idea of "21st century Marine silk road.Now the revival of "The silk road economic belt" refers to a new strategic height,must have its economic,political and social significance.This paper selected the Silk Road Economic Belt as the study area,water resource shortage as the starting point,proposed water resources pressure index,draw water pressure classes,and put forward corresponding regional water resources optimal allocation model.This paper firstly accounted water resources and water footprint of 14 provinces and 158 cities of Silk Road Economic Belt from 1990 to 2015,and analysed the supply and demand of water resources utilization of the Silk Road Economic Belt from the dimension of time and space.Secondly,using the water resources pressure evaluation system,the temporal and spatial difference of water resources pressure of the Silk Road Economic Belt was analyzed,and the 14 provinces were divided into three types.Finally,the optimal allocation model of water resources were analyzed and discussed,to play a certain reference and guidance for the rational utilization of water resources of the Silk Road Economic Belt.Some main conclusions are made through analysis and studies above all:(1)From 1990 to 2015,in the Silk Road Economic Belt,the total amount of water resources decreased from 15766.41×108m3 to 15284.5×108m3,and the water resources per capita decreased rapidly from 4370.99m3 to 3430.86m3,which decreased by 940.12 m3 and decreased by a factor of 21.51%.The largest total amount of water resources is Tibet autonomous region,the Sichuan Province,the Guangxi Zhuang Autonomous Region,The smallest is Ningxia Hui Autonomous Region are followed successively.(2)The average annual growth rate of water footprint in the Silk Road Economic Belt were increased from 612.50 m3 in 1990 to 657m3 in 2015.The rate of growth was 7.26%.According to the type of water footprint,the per capita total virtual water footprint took a short percentage,increasing from 1990 504.20 m3 to 515.90 m3 per capita from 1990 to 2015.The largest per capita water footprint is in Tibet Tibetan Autonomous Region,followed by Xinjiang Uygur Autonomous Region,Liaoning Province.Heilongjiang province has the smallest per capita water footprint.(3)The water resources pressure index of the Silk Road Economic Belt increased from 0.14 to 0.19,It turned out that there has no obvious change in these 25 years.with an average annual growth rate of 1.26%.The grade of water resources pressure index was low(Ⅰa),and increased to a lower grade(Ⅰb)after 2000,and restored to very low grade(Ⅰa)with a wave of change trends in the past three years.There are 14 provinces(cities)participated in this research,the grade of water resources pressure index of 4 provinces(cities)in Tibet Tibetan Autonomous Region,Qinghai Province,Yunnan province and Sichuan Province s was very low(Ⅰa),and Heilongjiang Province,the Guangxi Zhuang Autonomous Region,Xinjiang Uygur Autonomous Region,the Inner Mongolia Autonomous Region were lower(Ⅰb),and Jilin Province,Chongqing City were low-middle(Ⅱa),and Shaanxi Province was low-up as in(Ⅱb),and Gansu Province,Liaoning province and the Ningxia Hui Autonomous Region is very high(Ⅲb).(4)There are 14 provinces(cities)were included from the Silk road economic belt.These regions were divided into three partitions:water pressure region with low water pressure is Tibet Tibetan autonomous region,Qinghai province,Yunnan province,Sichuan province,Heilongjiang province,Guangxi zhuang autonomous region,Xinjiang uygur autonomous region and Inner Mongolia autonomous region;Water pressure medium area of Jilin province,Chongqing and shaanxi province;Water pressure higher area of Gansu province,Liaoning province and Ningxia hui autonomous region.(5)There are 158 cities were included from the Silk Road Economic Belt.These 158 cities(state)were divided into three partitions:water pressure region with low water pressure,nyingchi,Naqu district,Ali district 87 city(state),such as water pressure medium area have Hulun buir city,Suihua,Dali,etc.23(state),high water pressure areas such as,xi ’an,Wuzhong city,city of 48 cities(state).