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Characteristics of annual variation in net carbon dioxide flux in a sandy grassland ecosystem during dry years
NIU Ya-yi, LI Yu-qiang, WANG Xu-yang, GONG Xiang-wen, LUO Yong-qing, TIAN De-yu
Acta Prataculturae Sinica . 2018, (1): 215 -221 .  DOI: 10.11686/cyxb2017231