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　　YANJIUJIEGUOYIIncreasing rates of long-term nitrogen deposition consistently increased litter decomposition in a semi-arid grasslandWEITIFABIAOZAINew PhytologistZAZHISHANG(2021, 229: 296-307)。GAIYANJIUDEDAOGUOJIAZIRANKEXUEJIJINYOUQINGXIANGMU、ZHONGKEYUANQINGCUHUIXIANGMUDENGZIZHU。