Soil microbial diversity is extremely vulnerable to fertilization,which is one of the main anthropogenic activities associated with global changes.Yet we know little about how and why soil microbial diversity responds to fertilization across contrasting local ecological contexts.This knowledge is fundamental for predicting changes in soil microbial diversity in response to ongoing global changes.We analyzed soils from ten 20-year field fertilization(organic and/or inorganic)experiments across China and found that the national-scale responses of soil bacterial diversity to fertilization are dependent on ecological context.In acidic soils from regions with high precipitation and soil fertility,inorganic fertilization can result in further acidification,resulting in negative impacts on soil bacterial diversity.In comparison,organic fer-tilization causes a smaller disturbance to soil bacterial diversity.Despite the overall role of environmental contexts in driving soil microbial diversity,a small group of bacterial taxa were found to respond to fer-tilization in a consistent way across contrasting regions throughout China.Taxa such as Nitrosospira and Nitrososphaera,which benefit from nitrogen fertilizer addition,as well as Chitinophagaceae,Bacilli,and phototrophic bacteria,which respond positively to organic fertilization,could be used as bioindicators for soil fertility in response to fertilization at the national scale.Overall,our work provides new insights into the importance of local environmental context in determining the responses of soil microbial diver-sity to fertilization,and identifies regions with acidic soils wherein soil microbial diversity is more vul-nerable to fertilization at the national scale.

Youzhi Feng;Manuel Delgado-Baquerizo;Yongguan Zhu;Xiaozeng Han;Xiaori Han;Xiuli Xin;Wei Li;Zhibing Guo;Tinghui Dang;Chenhua Li;Bo Zhu;Zejiang Cai;Damning Li;Jiabao Zhang

State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China;Department of Physical,Chemical,and Natural Systems,Pablo de Olavide University,Sevilla 41013,Spain;State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;Key Laboratory of Urban Environment and Health,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China;National Observation Station of the Hailun Agroecology System,Key Laboratory of Mollisols Agroecology,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 130102,China;College of Land and Environment,National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources,Shenyang Agricultural University,Shenyang 110866,China;Crop Research Institute,Anhui Academy of Agricultural Sciences,Hefei 230001,China;Soil and Fertilizer Research Institute,Anhui Academy of Agricultural Sciences,Hefei 230001,China;Institute of Soil and Water Conservation,Northwest A&F University,Chinese Academy of Science&Ministry of Water Resources,Yangling 712100,China;Fukang Station of Desert Ecology,Key Laboratory of Oasis Ecology and Desert Environment,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China;Key Laboratory of Mountain Environment Evolvement and Regulation,Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China;Qiyang Agroecosystem of the National Field Experimental Station,Yongzhou 426199,China;National Engineering Laboratory for Improving the Quality of Arable Land,Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China;Jiangxi Institute of Red Soil,Nanchang 331717,China

工程（英文）

[1]Youzhi Feng;Manuel Delgado-Baquerizo;Yongguan Zhu;Xiaozeng Han;Xiaori Han;Xiuli Xin;Wei Li;Zhibing Guo;Tinghui Dang;Chenhua Li;Bo Zhu;Zejiang Cai;Damning Li;Jiabao Zhang-.Responses of Soil Bacterial Diversity to Fertilization are Driven by Local Environmental Context Across China)[J].工程（英文）,2022(05):164-170

nerable

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