Artificial humic acid reshapes microbial C-N metabolism and nitrogen partition in microplastic-contaminated soils.
Microplastics pose a serious threat to soil ecosystems, particularly nitrogen cycling. Among the diverse types of microplastics, polypropylene (PP) and polylactic acid (PLA) are frequently detected in agricultural soils. Artificial humic acid (A-HA), a humic-like substance derived from lignocellulosic waste, may regula...