The Study of Carbon Dioxide Flux on Xilamuren Grassland Based on the Eddy Covariance Technique

The eddy covariance is a micrometeorological technique to observe and investigate ecosystem flux nondestructively, as well as the main method the eddy covariance may help to research carbon dioxide exchange between global vegetations and the atmosphere. Carbon dioxide flux has been monitored on Xilamuren grassland of Wulanchabu city by Open Path Eddy Covariance System (OP-2). Carbon dioxide flux shows that carbon absorption is greater than its release, which has an evident carbon sink functions and obvious seasonal variety on the basis of experimental data from June 2009 to July 2011.