Oases in arid northwestern China play a significant role in the region＇s economic stability and development. Overex- ploitation of the region＇s water resources has led to serious environmental consequences. In oases...Oases in arid northwestern China play a significant role in the region＇s economic stability and development. Overex- ploitation of the region＇s water resources has led to serious environmental consequences. In oases, irrigated agriculture is the primary consumer of water, but water shortages resulting from dramatically growing human needs have become a bottleneck for regional sustainable development, making effective management of the limited available water critical. Effective strategies must be formulated to increase agricultural productivity while reducing its environmental impacts. To support the development of such strategies, water use patterns were analyzed during the 2007 and 2008 growing seasons, from May to early October, to identify opportunities for improving water management using the Mold- en-Sakthivadivel water-accounting method, which combines groundwater and surface water into a single domain and can provide a good estimate of the uses, depletion, and productivity of water in a water basin context. The study area lies in Linze County, Gansu Province, China. In the study area, the inflow water resources consist of irrigation, precipita- tion, and soil water, which accounted for 89.3%, 8.9%, and 1.8% of the total in 2007, and 89.3%, 4.8%, and 5.9% in 2008, respectively. The irrigation depends heavily on groundwater, which accounted for 82.1% and 83.6% of the total irrigation water in 2007 and 2008, respectively. In 2007 and 2008, deep percolation accounted for 50.1% and 47.9% of the water outflow, respectively, with corresponding depleted fractions of 0.51 and 0.55, respectively. For the irrigation district as a whole, the water productivity was only 1.37 CNY/m^3. To significantly increase crop water productivity and prevent depletion of the region＇s groundwater aquifer, it will be necessary to reduce the amount of water used for ir- rigation. Several water-saving agricultural practices are discussed and recommended.展开更多
Beijing-Tianjin-Hebei region is connected by geography and water veins with strong complementary advantages.The coordinated development of Beijing,Tianjin and Hebei is a major national strategy put forward by the Chin...Beijing-Tianjin-Hebei region is connected by geography and water veins with strong complementary advantages.The coordinated development of Beijing,Tianjin and Hebei is a major national strategy put forward by the Chinese government in the new historical period.However,Beijing,Tianjin and Hebei are faced with common problems such as water shortage,serious water pollution,over-exploitation of groundwater and fragile water ecology.The synergy governance of water resources is the basis and key issue behind the coordinated development of the tree areas.This paper analyzes the water problem in Beijing-Tianjin-Hebei region and the status of water resources accounting and discusses the basic ideas of inspecting water resources management and innovating water accounting system.In this paper,a fi ne,standardized,water accounting system is established,which is permitted for inter-sustainable use of water resources.On this basis,this paper proposes to keep in line with Australian water accounting standards and to establish General Purpose Water Accounting for disclosure of water accounting reports,based on accrual basis,so as to build a new mechanism of coordinated governance of Beijing-Tianjin-Hebei water resources.Finally,in order to demonstrate the optimization mechanism of Beijing-Tianjin-Hebei water resources coordinated management,this paper applies General Purpose Water Accounting to Beijing Waterworks Group Co.,Ltd.展开更多
The Third Plenary Session of the 18 th Central Committee of the Communist Party of China has proposed an important national strategic decision: to explore and establish the balance sheet of natural resources, to imple...The Third Plenary Session of the 18 th Central Committee of the Communist Party of China has proposed an important national strategic decision: to explore and establish the balance sheet of natural resources, to implement leaders’ of-office auditing system about natural resources assets. Water is one of the most essential nature resources of human beings; water resources accounting, as an important water resources management tool, is an essential part of compiling the natural resources balance sheet. In this paper, we provide a summary of the historic evolution of water resources accounting and analyze its application in some typical countries. Although water resources accounting and water resources balance sheet reflect different implications and focus, both require water resources accounts as the basis in system establishment.展开更多
基金funded by the National Natural Science Foundation of China (Project 40771079 and 41471024)
文摘Oases in arid northwestern China play a significant role in the region＇s economic stability and development. Overex- ploitation of the region＇s water resources has led to serious environmental consequences. In oases, irrigated agriculture is the primary consumer of water, but water shortages resulting from dramatically growing human needs have become a bottleneck for regional sustainable development, making effective management of the limited available water critical. Effective strategies must be formulated to increase agricultural productivity while reducing its environmental impacts. To support the development of such strategies, water use patterns were analyzed during the 2007 and 2008 growing seasons, from May to early October, to identify opportunities for improving water management using the Mold- en-Sakthivadivel water-accounting method, which combines groundwater and surface water into a single domain and can provide a good estimate of the uses, depletion, and productivity of water in a water basin context. The study area lies in Linze County, Gansu Province, China. In the study area, the inflow water resources consist of irrigation, precipita- tion, and soil water, which accounted for 89.3%, 8.9%, and 1.8% of the total in 2007, and 89.3%, 4.8%, and 5.9% in 2008, respectively. The irrigation depends heavily on groundwater, which accounted for 82.1% and 83.6% of the total irrigation water in 2007 and 2008, respectively. In 2007 and 2008, deep percolation accounted for 50.1% and 47.9% of the water outflow, respectively, with corresponding depleted fractions of 0.51 and 0.55, respectively. For the irrigation district as a whole, the water productivity was only 1.37 CNY/m^3. To significantly increase crop water productivity and prevent depletion of the region＇s groundwater aquifer, it will be necessary to reduce the amount of water used for ir- rigation. Several water-saving agricultural practices are discussed and recommended.
基金funded by Beijing Social Science Fund(18GLB012)Social Science Fund of Beijing Education Commission(SM201810037004).
文摘Beijing-Tianjin-Hebei region is connected by geography and water veins with strong complementary advantages.The coordinated development of Beijing,Tianjin and Hebei is a major national strategy put forward by the Chinese government in the new historical period.However,Beijing,Tianjin and Hebei are faced with common problems such as water shortage,serious water pollution,over-exploitation of groundwater and fragile water ecology.The synergy governance of water resources is the basis and key issue behind the coordinated development of the tree areas.This paper analyzes the water problem in Beijing-Tianjin-Hebei region and the status of water resources accounting and discusses the basic ideas of inspecting water resources management and innovating water accounting system.In this paper,a fi ne,standardized,water accounting system is established,which is permitted for inter-sustainable use of water resources.On this basis,this paper proposes to keep in line with Australian water accounting standards and to establish General Purpose Water Accounting for disclosure of water accounting reports,based on accrual basis,so as to build a new mechanism of coordinated governance of Beijing-Tianjin-Hebei water resources.Finally,in order to demonstrate the optimization mechanism of Beijing-Tianjin-Hebei water resources coordinated management,this paper applies General Purpose Water Accounting to Beijing Waterworks Group Co.,Ltd.
基金supported by the Chinese Science Academy STS Program: Natural Resources Balance Sheet Research and Application (KFJ-EW-STS-001)National Natural Science Funds Key Project (Grant No. 91125019)National Natural Science Youth Foundation (Grant No. 41401645)
文摘The Third Plenary Session of the 18 th Central Committee of the Communist Party of China has proposed an important national strategic decision: to explore and establish the balance sheet of natural resources, to implement leaders’ of-office auditing system about natural resources assets. Water is one of the most essential nature resources of human beings; water resources accounting, as an important water resources management tool, is an essential part of compiling the natural resources balance sheet. In this paper, we provide a summary of the historic evolution of water resources accounting and analyze its application in some typical countries. Although water resources accounting and water resources balance sheet reflect different implications and focus, both require water resources accounts as the basis in system establishment.
