Land degradation,unbalanced nutrition,change in climate and its extreme variability are the factors affecting the sustainability of agriculture and food security.In North-west Pakistan,more than 50%of the cultivated a...Land degradation,unbalanced nutrition,change in climate and its extreme variability are the factors affecting the sustainability of agriculture and food security.In North-west Pakistan,more than 50%of the cultivated area is rain-fed and the crop productivity is low.Conservation agriculture reduces greenhouse gas emissions by enhancing soil carbon sequestration and then improved soil fertility,WUE and crop productivity.A field experiment展开更多
Sequestration of carbon dioxide（CO<sub>2</sub>） in deep, unminable coalseam is an innovative technology, because it can not only reduce greenhouse gas in the atmosphere,but also enhance coalbed methane r...Sequestration of carbon dioxide（CO<sub>2</sub>） in deep, unminable coalseam is an innovative technology, because it can not only reduce greenhouse gas in the atmosphere,but also enhance coalbed methane recovery（CO<sub>2</sub>-ECBM）.Lots of research have been carried out on this topic in recent years.However,few of them were focused on the comparison of the展开更多
Soil organic carbon reserve is an important parameter for the study of carbon cycle and global change.Using the measured data of the multi-purpose regional geochemical survey,we estimated the SOC densities and reserve...Soil organic carbon reserve is an important parameter for the study of carbon cycle and global change.Using the measured data of the multi-purpose regional geochemical survey,we estimated the SOC densities and reserves of various land types in Jilin mid-west area.We found that chermozem’s organic carbon reserve is the highest,and dark brown soil’s and black soil’s are also quite high.Then,we carried a comparison research with the date of the second soil general survey.The result shows that the organic carbon densities of many soil types has increased,and among them chestnut soil,dark brown soil and brown soil are the most significant.Furthermore,We studied the change of soil organic carbon reserve in western Jilin during 1989-2004,which was caused by展开更多
文摘Land degradation,unbalanced nutrition,change in climate and its extreme variability are the factors affecting the sustainability of agriculture and food security.In North-west Pakistan,more than 50%of the cultivated area is rain-fed and the crop productivity is low.Conservation agriculture reduces greenhouse gas emissions by enhancing soil carbon sequestration and then improved soil fertility,WUE and crop productivity.A field experiment
文摘Sequestration of carbon dioxide（CO<sub>2</sub>） in deep, unminable coalseam is an innovative technology, because it can not only reduce greenhouse gas in the atmosphere,but also enhance coalbed methane recovery（CO<sub>2</sub>-ECBM）.Lots of research have been carried out on this topic in recent years.However,few of them were focused on the comparison of the
文摘Soil organic carbon reserve is an important parameter for the study of carbon cycle and global change.Using the measured data of the multi-purpose regional geochemical survey,we estimated the SOC densities and reserves of various land types in Jilin mid-west area.We found that chermozem’s organic carbon reserve is the highest,and dark brown soil’s and black soil’s are also quite high.Then,we carried a comparison research with the date of the second soil general survey.The result shows that the organic carbon densities of many soil types has increased,and among them chestnut soil,dark brown soil and brown soil are the most significant.Furthermore,We studied the change of soil organic carbon reserve in western Jilin during 1989-2004,which was caused by
