草地是全球陆地分布面积最为广泛的植被类型之一。在我国，草地面积占到了国土面积的40%以上，是我国最大的陆地生态系统。
　　对于大多数草地生态系统，水分和氮素是其最重要的两大限制性环境因子。全球变化背景下，降水格局和氮沉降正在发生明显的改变，两者以及两者之间交互将如何对草地生态系统特别是对草地碳、氮元素生物地球化学循环过程产生影响是目前草地全球变化领域的重点关注内容，同时也是提高草地生产力、实现草地可持续发展的重要基础。
　　董云社研究小组近期在草地碳库、N₂O温室气体排放以及土壤微生物特征对水、氮变化交互作用的响应研究方面取得了相应的进展，发表的SCI论文如下：　　
　　1、JunqiangJia, Yunshe Dong, Yuchun Qi, Qin Peng, Xinchao Liu, Liangjie Sun, ShufangGuo, Yunlong He, Congcong Cao, Zhongqing Yan. Effects of water and nitrogen addition on vegetation carbon pools in a semi-arid temperate steppe. Journal of Forestry Research, 2016,27(3):621-629.
　　论文链接
　　2、Xinchao Liu, Yunshe Dong, Yuchun Qi, Qin Peng, Yating He, Liangjie Sun, JunqiangJia, ShufangGuo, Congcong Cao, Zhongqing Yan, Xuehua Liu. Response of N₂O emission to water and nitrogen addition in temperate typical steppe soil in Inner Mongolia, China. Soil and Tillage Research, 2015, 151: 9-17.
　　论文链接
　　3、Liangjie Sun, Yuchun Qi, Yunshe Dong, Yating He, Qin Peng, Xinchao Liu, Junqiang Jia, Shufang Guo, Congcong Cao. Interactions of water and nitrogen addition on soil microbial community composition and functional diversity depending on the inter-annual precipitation in a Chinese steppe. Journal of Integrative Agriculture, 2015, 14 (4): 788-799.
论文链接