The problem of water resources has become a bottleneck for the sustainable development of Beijing and Hebei Province (the two regions together are called "Jingji Region" for short).It is imperative to establ...The problem of water resources has become a bottleneck for the sustainable development of Beijing and Hebei Province (the two regions together are called "Jingji Region" for short).It is imperative to establish an effective and equitable water resources ecological compensation (eco-compensation) mechanism.The three stages of water resources eco-compensation are expatiated here namely the eco-compensation missing stage,ecocompensation start stage and the eco-compensation development stage.Through the establishment of eco-compensation game model based on the game theory,the reasons of the formation for the three stages were analyzed,as well as the conversion conditions from non-cooperative game to cooperative game among the related stakeholders including the central government,the water recipient government and the water source government.Furthermore,this study pointed out that the water resources eco-compensation in Jingji Region was not established based on the institution,but formed and developed in coping with the challenges of water crisis.However,institution construction is quite essential in game process for the water recipient government and the water source government.Finally recommendations in four areas including legalization of eco-compensation mechanism,setting up compensation standards,leading industrial upgrading and developing related incentives and constraints were concluded.展开更多
Eddy-covariance observations from the Beijing 325-m meteorological tower are used to evaluate the effects of coordinate rotation on the turbulent exchange of momentum and scalars during wintertime haze pollution(Janua...Eddy-covariance observations from the Beijing 325-m meteorological tower are used to evaluate the effects of coordinate rotation on the turbulent exchange of momentum and scalars during wintertime haze pollution(January-February 2013). Two techniques are used in the present evaluation; namely, the natural wind coordinate(NWC) and the planar fit coordinate(PFC), with the latter being applied by means of two methods for linear regression(i.e., overall and sector-wise). The different techniques show a general agreement in both turbulent fluxes and transport efficiencies, especially evident at the lower, 140-m level above the ground(compared to the higher, 280-m level), perhaps implying that the selection of a technique for coordinate rotation(NWC or PFC) is less of a concern for a sufficiently low level, despite the complexities of urban terrain. Additionally, sector-wise regression is a recommended approach for practical application of the PFC in a complex urban environment subjected to particulate pollution, because this method is found to produce a better correlation between the mean vertical velocity at the 140- and 280-m heights.展开更多
基金sponsored by the program of CDRF-GM Young Professionals in Development Study (PHD Dissertations Fellowship) set by China Development Research Foundation in 2009
文摘The problem of water resources has become a bottleneck for the sustainable development of Beijing and Hebei Province (the two regions together are called "Jingji Region" for short).It is imperative to establish an effective and equitable water resources ecological compensation (eco-compensation) mechanism.The three stages of water resources eco-compensation are expatiated here namely the eco-compensation missing stage,ecocompensation start stage and the eco-compensation development stage.Through the establishment of eco-compensation game model based on the game theory,the reasons of the formation for the three stages were analyzed,as well as the conversion conditions from non-cooperative game to cooperative game among the related stakeholders including the central government,the water recipient government and the water source government.Furthermore,this study pointed out that the water resources eco-compensation in Jingji Region was not established based on the institution,but formed and developed in coping with the challenges of water crisis.However,institution construction is quite essential in game process for the water recipient government and the water source government.Finally recommendations in four areas including legalization of eco-compensation mechanism,setting up compensation standards,leading industrial upgrading and developing related incentives and constraints were concluded.
基金funded by the National Basic Research Program of China(Grant No.2014CB447900)National High Technology Research and Development Program(Grant No.2014AA06A512)Ministry of Environmental Protection of China through its Special Funds for Scientific Research on Public Welfare(Grant No.201409001)
文摘Eddy-covariance observations from the Beijing 325-m meteorological tower are used to evaluate the effects of coordinate rotation on the turbulent exchange of momentum and scalars during wintertime haze pollution(January-February 2013). Two techniques are used in the present evaluation; namely, the natural wind coordinate(NWC) and the planar fit coordinate(PFC), with the latter being applied by means of two methods for linear regression(i.e., overall and sector-wise). The different techniques show a general agreement in both turbulent fluxes and transport efficiencies, especially evident at the lower, 140-m level above the ground(compared to the higher, 280-m level), perhaps implying that the selection of a technique for coordinate rotation(NWC or PFC) is less of a concern for a sufficiently low level, despite the complexities of urban terrain. Additionally, sector-wise regression is a recommended approach for practical application of the PFC in a complex urban environment subjected to particulate pollution, because this method is found to produce a better correlation between the mean vertical velocity at the 140- and 280-m heights.
