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中文摘要：
本文从2009年7月12日到11月5日,利用静态箱-气象色谱法对内蒙古荒漠草地不同放牧强度试验区痕量气体交换进行监测。结果表明：不同放牧强度没有改变放牧草地、裸地原有气体通量交换方向及季节变化形式。荒漠草地生态系统是CH4弱的汇,是CO2的源。荒漠草地输出C素。同时这一过程受取样温度,土壤相对湿度,土壤状况及植被群落等多种因素影响。
英文摘要：
The greenhouse gas flux was measured using the static chamber method from July 12th to November 5th 2009 in the different stocking rate plots of the Inner Mongolia desert grassland.Based on the results of the field experiment,the different stocking rates didn＇t change the source and sinks of gas fluxes and seasonal variation patterns.The desert grassland ecological system absorbed the methane weakly and exhausted the carbon dioxide.Desert grassland output C element.The carbon flux of desert grassland was mainly affected by temperature,moisture,community vegetation characteristics.
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