The mechanism of the dose effect of straw on soil respiration: Evidence from enzymatic stoichiometry and functional genes

• Published in: Soil biology & biochemistry Vol. 168; p. 108636
• Main Authors: Li, Shuailin, Cui, Yongxing, Xia, Zhuqing, Zhang, Xinhui, Zhu, Mengmeng, Gao, Yun, An, Siyu, Yu, Wantai, Ma, Qiang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.05.2022
• Subjects: Agricultural ecosystems; carbon; cellulose; chitin; dose response; Ecoenzymatic stoichiometry; field experimentation; Functional genes; hemicellulose; lignin; microbial biomass; Microbial CUE; Microbial metabolic limitation; mineralization; polymerase chain reaction; soil; Soil C cycling; soil respiration; starch; stoichiometry; straw; Agricultural ecosystems; Microbial CUE; Microbial metabolic limitation; Soil C cycling; Ecoenzymatic stoichiometry; Functional genes

Straw return to soil is a global field practice for sequestering carbon (C) in agricultural ecosystems, and soil C mineralization depends on the soil microbial metabolic process. However, the variation patterns of microbial respiration (Rs) and associated mechanisms under long-term straw input at di...