CO_2 emission and organic carbon burial in the Xinanjiang Reservoir

In order to understand the effect of river impoundment on carbon dynamics, a large reservoir in a subtropical area, the Xinanjiang Reservoir, was investigated in detail. CO_2 emissions from the water–air interface was studied, as was organic carbon burial in sediment. The results show a significant seasonal difference in CO_2 emissions. River impoundment led to the enhancement of aquatic photosynthesis, generating large amounts of authigenic organic carbon that was then buried in sediment.

谈谈语文课后练习的处理

语文课后练习是对所学课文知识内容的巩固、消化、吸收,有着很重要的作用。课后练习教师要在课前、课堂、课后有机完成,绝不能把课后练习一味留给学生在课外完成。