Climate-smart straw return amplifies CO2 fertilization effects while decoupling N2O emissions: Evidence from soil metagenomics and metabolomics - Ruonan Duan; Wei Gao; Qiqi He; Zhichao Zhai; Yuzheng Zong; Dongsheng Zhang; Xinrui Shi; Xingyu Hao; Ping Li (Journal of Cleaner Production, 2026)