Based on the statistical data of urbanization development level and ecological environment in the Yellow River Delta during 2009-2014,a comprehensive index system for the coordinated development of urbanization and ec...Based on the statistical data of urbanization development level and ecological environment in the Yellow River Delta during 2009-2014,a comprehensive index system for the coordinated development of urbanization and ecological environment was established to evaluate the coordinated development level. The results showed that the coordinated development level of urbanization and ecological environment in the Yellow River Delta was generally high during 2009-2014. The development level of urbanization was higher than that of ecological environment on the whole,that is,the development of ecological environment lagged behind. The development of urbanization in the region was relatively slow during 2009-2011 but rapid during 2012-2014. The development level of ecological environment was relatively stable and always increased.展开更多
The Yangtze river delta has the largest port group in China.On the coast are sea ports,Yangkou Shanghai Beilun,aligned on a north-south axis which,together with ports along the Lower Yangtze river,form a T-shaped port...The Yangtze river delta has the largest port group in China.On the coast are sea ports,Yangkou Shanghai Beilun,aligned on a north-south axis which,together with ports along the Lower Yangtze river,form a T-shaped port association.This is unique in the country.For rational port localization and development,it is suggested that Shanghai should retain its undisputed position as an international and domestic hub port of China.Beilun and Yangkou,with their deep-water berths,should be transshipment ports of imported bulky goods (ore,crude oiletc.) and inter-continental international containers for Shanghai and the Yangtze valley above Nanjing,while ports on the lower Yangtze river will展开更多
Two deltas developed simultaneously during the Eocene on the eastern side of a large lake that existed in the Dongying Sub-basin,which forms part of the Bohai Bay Basin in eastern China.The rivers that built the delta...Two deltas developed simultaneously during the Eocene on the eastern side of a large lake that existed in the Dongying Sub-basin,which forms part of the Bohai Bay Basin in eastern China.The rivers that built the deltas had different catchment areas,which resulted in sediments with different permeability and porosity,due to differences in sorting and mud content.Both deltas prograded,and mass flows that originated frequently on their fronts formed lobes that expanded laterally.This eventually led to merging of both deltas,a feature that has rarely been described from ancient deposits thus far.Core analysis and seismic reflection data show that the merging of the two deltas took place in nine phases,determined by phases of slower progradation or even temporary retrogradation in between.The alternation of sediments from both deltas and their eventual mixing makes the architecture of the merged deltas much more complex than that of'classical'single deltas.This affects the predictability of the spatial distribution of possible reservoir characteristics significantly,but detailed core analysis shows that the best hydrocarbon reservoirs consist of sand bodies formed in distributary channels on the delta plains,and of sandy turbidites formed in the deep-lacustrine environment in front of the merged deltas.展开更多
基金Supported by Research Project of Binzhou University(BZXYL1501)
文摘Based on the statistical data of urbanization development level and ecological environment in the Yellow River Delta during 2009-2014,a comprehensive index system for the coordinated development of urbanization and ecological environment was established to evaluate the coordinated development level. The results showed that the coordinated development level of urbanization and ecological environment in the Yellow River Delta was generally high during 2009-2014. The development level of urbanization was higher than that of ecological environment on the whole,that is,the development of ecological environment lagged behind. The development of urbanization in the region was relatively slow during 2009-2011 but rapid during 2012-2014. The development level of ecological environment was relatively stable and always increased.
文摘The Yangtze river delta has the largest port group in China.On the coast are sea ports,Yangkou Shanghai Beilun,aligned on a north-south axis which,together with ports along the Lower Yangtze river,form a T-shaped port association.This is unique in the country.For rational port localization and development,it is suggested that Shanghai should retain its undisputed position as an international and domestic hub port of China.Beilun and Yangkou,with their deep-water berths,should be transshipment ports of imported bulky goods (ore,crude oiletc.) and inter-continental international containers for Shanghai and the Yangtze valley above Nanjing,while ports on the lower Yangtze river will
基金financially supported by the National Natural Science Foundation of China(grant 41972146)。
文摘Two deltas developed simultaneously during the Eocene on the eastern side of a large lake that existed in the Dongying Sub-basin,which forms part of the Bohai Bay Basin in eastern China.The rivers that built the deltas had different catchment areas,which resulted in sediments with different permeability and porosity,due to differences in sorting and mud content.Both deltas prograded,and mass flows that originated frequently on their fronts formed lobes that expanded laterally.This eventually led to merging of both deltas,a feature that has rarely been described from ancient deposits thus far.Core analysis and seismic reflection data show that the merging of the two deltas took place in nine phases,determined by phases of slower progradation or even temporary retrogradation in between.The alternation of sediments from both deltas and their eventual mixing makes the architecture of the merged deltas much more complex than that of'classical'single deltas.This affects the predictability of the spatial distribution of possible reservoir characteristics significantly,but detailed core analysis shows that the best hydrocarbon reservoirs consist of sand bodies formed in distributary channels on the delta plains,and of sandy turbidites formed in the deep-lacustrine environment in front of the merged deltas.
