Conservation management improves agroecosystem function and resilience of soil nitrogen cycling in response to seasonal changes in climate

Understanding how conservation agricultural management improves soil nitrogen (N) stability in the face of climate change can help increase agroecosystem productivity and mitigate runoff, leaching downstream water quality issues. We conducted a 2-year field study 36-year-old rain-fed cotton production system to evaluate impacts changing climatic factors (temperature precipitation) on N under management, including moderate inorganic fertilizer application (0 67 kg ha?1), winter cover crops (fallow; wheat, Triticum aestivum L.; hairy vetch, Vicia villosa Roth), reduced tillage (no-till; disk tillage). Structural equation modeling (SEM) was used quantify compare effects concentrations. Fertilizer vetch increased total concentration by 16% 18%, respectively, also microbial transformation rate 41% 168%. In addition, labile concentrations 57%, 21%, 79%, i.e., extractable organic N, ammonium, nitrate, respectively. The highest ?15N value (6.4 ± 0.3‰) observed ha?1 fertilizer-wheat-disk treatment, lowest (4.8 zero-fertilizer-wheat-no-till indicating might accelerate transformation. SEM showed positive temperature precipitation concentrations, suggesting destabilization potential for loss intensified precipitation. use some accelerating transformations, with having larger effect than (0.35 vs. 0.15, Table 1). No-till reduce maintaining structure. Our suggests that fertilizer, crop, no-till improve function resilience agroecosystems relation cycling. Soil stabilization cropping systems be enhanced adjusting management.