Effects of Experimental Nitrogen Additions on Understory Species Diversity in Four Forests in China
HU Junyu,ZHU Jianxiao,ZHOU Zhang,LI Peng,CUI Jun,TANG Zhiyao,FANG Jingyun
Acta Scientiarum Naturalium Universitatis Pekinensis . 2014, (5): 904 -910 . 

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