The hallmark of development in the Yangtze River Delta(YRD) of East China has been sprawling urbanization. However, air pollution is a significant problem in these urban areas. In this paper, we investigated and analy...The hallmark of development in the Yangtze River Delta(YRD) of East China has been sprawling urbanization. However, air pollution is a significant problem in these urban areas. In this paper, we investigated and analyzed the air pollution index(API) in four cities(Shanghai, Nanjing, Hangzhou and Ningbo) in the YRD from 2001 to 2012. We attempted to empirically examine the relationship between meteorological factors and air quality in the urban areas of the YRD. According to the monitoring data, the API in Shanghai, Nanjing, Hangzhou slightly declined and that in Ningbo increased over the study period. We analyzed the inter-annual, seasonal, and monthly variations of API, from which we found that the air quality had different temporal changes in the four cities. It was indicated that air quality was poor in winter and spring and best in summer. Furthermore, different weather conditions affected air quality level. The wind direction was considered as an important and influential factor to air pollution, which has an impact on the accumulating or cleaning processes of pollutants. The air quality was influenced by the different wind directions that varied with seasons and cities.展开更多
The story of iron and steel production in China is one of constant and spectacular rise,but no one seemns to know yet if the story will hawe a happy ending.
In the transition from the plarned economy of the past to the socialist market economy of the pre-sent,people in charge of employ-ment in China have had to face many unprecedented problems and challenges.The problems ...In the transition from the plarned economy of the past to the socialist market economy of the pre-sent,people in charge of employ-ment in China have had to face many unprecedented problems and challenges.The problems are no doubt temporary.China is a country like no other:it has to establish its own unique employment system-one that will gradually and smooth-ly lock in with the socialist market economy as the latter takes shape.Not an easy task,but as long as the economy continues to grow and stay healthy,so will employment statis-tics.展开更多
Many locals in Dongxing still like to tell the story of what happened during the Spring Festival in 1989.Swarms of Vietnamese,oblivious of the border trenches left from the war in 1979 and the freezing Beilun River,si...Many locals in Dongxing still like to tell the story of what happened during the Spring Festival in 1989.Swarms of Vietnamese,oblivious of the border trenches left from the war in 1979 and the freezing Beilun River,simply decided to come into Dongxing for the day.展开更多
"Water,woater evenyuwhere,and nary a drop to drink!"Poetry becomes reality in China,as experts scramble to find new supplies of the preious liquid to slake the thirst of a growing population and industry.
Now the China National Astronau-tics Industry Corporation is devcting more efforts to narrowing the gaps and has also begun research into manned satellites,which it hopes will be real-ized by the end of this century.
基金Under the auspices of Special Research Fund of the Ministry of Land and Resources for the Non-Profit Sector(No201411014-03)National Key Technology Research and Development Program of China(No.2012BAH28B04)
文摘The hallmark of development in the Yangtze River Delta(YRD) of East China has been sprawling urbanization. However, air pollution is a significant problem in these urban areas. In this paper, we investigated and analyzed the air pollution index(API) in four cities(Shanghai, Nanjing, Hangzhou and Ningbo) in the YRD from 2001 to 2012. We attempted to empirically examine the relationship between meteorological factors and air quality in the urban areas of the YRD. According to the monitoring data, the API in Shanghai, Nanjing, Hangzhou slightly declined and that in Ningbo increased over the study period. We analyzed the inter-annual, seasonal, and monthly variations of API, from which we found that the air quality had different temporal changes in the four cities. It was indicated that air quality was poor in winter and spring and best in summer. Furthermore, different weather conditions affected air quality level. The wind direction was considered as an important and influential factor to air pollution, which has an impact on the accumulating or cleaning processes of pollutants. The air quality was influenced by the different wind directions that varied with seasons and cities.
文摘The story of iron and steel production in China is one of constant and spectacular rise,but no one seemns to know yet if the story will hawe a happy ending.
文摘In the transition from the plarned economy of the past to the socialist market economy of the pre-sent,people in charge of employ-ment in China have had to face many unprecedented problems and challenges.The problems are no doubt temporary.China is a country like no other:it has to establish its own unique employment system-one that will gradually and smooth-ly lock in with the socialist market economy as the latter takes shape.Not an easy task,but as long as the economy continues to grow and stay healthy,so will employment statis-tics.
文摘Many locals in Dongxing still like to tell the story of what happened during the Spring Festival in 1989.Swarms of Vietnamese,oblivious of the border trenches left from the war in 1979 and the freezing Beilun River,simply decided to come into Dongxing for the day.
文摘"Water,woater evenyuwhere,and nary a drop to drink!"Poetry becomes reality in China,as experts scramble to find new supplies of the preious liquid to slake the thirst of a growing population and industry.
文摘Now the China National Astronau-tics Industry Corporation is devcting more efforts to narrowing the gaps and has also begun research into manned satellites,which it hopes will be real-ized by the end of this century.
