Ice and snow chemistry of alpine glaciers is crucial for the research of regional atmospheric environment change. Fresh snow samples were weekly collected from Urumqi Glacier No.1 in the Tianshan Mountains, Xin- jiang...Ice and snow chemistry of alpine glaciers is crucial for the research of regional atmospheric environment change. Fresh snow samples were weekly collected from Urumqi Glacier No.1 in the Tianshan Mountains, Xin- jiang, China, and the chemical characteristics and seasonal variations of major ions, mineral dust, δ18O and trace metals were measured. Results show that the concentrations of major ions in the snow are Ca2+ > SO42-> NH4+ > NO3-> Cl-> Na+ > Mg2+ > K+, in which Ca2+ is the dominant cation, and SO42-is the dominant anion. All major ions have close positive correlations with each other except NO3-. δ18O shows positive correlation with air temperature change during the study period. Mineral dust particle and major ionic concentrations in fresh snow have obvious seasonal change, with high concentration in spring but low concentration in summer and autumn, which indicates that the chemical mass input from Asian dust activity to snow is very significant. Temporal changes of trace metals in fresh snow, e.g., Cd, Pb, Zn, Al, Fe, have shown that human-induced pollution of central Asian region also has large contribution to the snow chemistry on alpine glaciers of the Tianshan Mountains.展开更多
One of the threats to the modem men today is the quick change in seasons and unusual fluctuations in temperature Contemporary life is marked with various conditions that make life comparatively different and for that ...One of the threats to the modem men today is the quick change in seasons and unusual fluctuations in temperature Contemporary life is marked with various conditions that make life comparatively different and for that matter difficult for everyone. Amongst many worldly things, like materialism, struggle to survive in the highly competitive urban settings, people tend to consider the merits of cosmopolitanism more than anything else Curiously enough, Sir Philip Sidney＇s sonnets, though written in the 16th century and become milestones of the sonnet tradition in the English Renaissance which are applicable to today＇s global concern of environmentalism. When considered in the light of ecocriticism, Sidney＇s sonnets provide a suitable ground for the modem readers to reevaluate the current situation of the world we live in and the nature that we inherit from our ancestors. This paper aims to analyze some of Sidney＇s selected sonnets from Astrophil and Stella in the light of ecocritical approach to literary works.展开更多
基金Under the auspices of Major State Basic Research Development Program of China(No.2010CB951003)Knowledge Innovation Programs of the Chinese Academy of Sciences(No.KZCXZ-YW-127)National Natural Science Foundation of China(No.40631001,40571033,40701034,40371028,J0630966,40701035)
文摘Ice and snow chemistry of alpine glaciers is crucial for the research of regional atmospheric environment change. Fresh snow samples were weekly collected from Urumqi Glacier No.1 in the Tianshan Mountains, Xin- jiang, China, and the chemical characteristics and seasonal variations of major ions, mineral dust, δ18O and trace metals were measured. Results show that the concentrations of major ions in the snow are Ca2+ > SO42-> NH4+ > NO3-> Cl-> Na+ > Mg2+ > K+, in which Ca2+ is the dominant cation, and SO42-is the dominant anion. All major ions have close positive correlations with each other except NO3-. δ18O shows positive correlation with air temperature change during the study period. Mineral dust particle and major ionic concentrations in fresh snow have obvious seasonal change, with high concentration in spring but low concentration in summer and autumn, which indicates that the chemical mass input from Asian dust activity to snow is very significant. Temporal changes of trace metals in fresh snow, e.g., Cd, Pb, Zn, Al, Fe, have shown that human-induced pollution of central Asian region also has large contribution to the snow chemistry on alpine glaciers of the Tianshan Mountains.
文摘One of the threats to the modem men today is the quick change in seasons and unusual fluctuations in temperature Contemporary life is marked with various conditions that make life comparatively different and for that matter difficult for everyone. Amongst many worldly things, like materialism, struggle to survive in the highly competitive urban settings, people tend to consider the merits of cosmopolitanism more than anything else Curiously enough, Sir Philip Sidney＇s sonnets, though written in the 16th century and become milestones of the sonnet tradition in the English Renaissance which are applicable to today＇s global concern of environmentalism. When considered in the light of ecocriticism, Sidney＇s sonnets provide a suitable ground for the modem readers to reevaluate the current situation of the world we live in and the nature that we inherit from our ancestors. This paper aims to analyze some of Sidney＇s selected sonnets from Astrophil and Stella in the light of ecocritical approach to literary works.
