Simulations of Soil Water and Heat Processes for No Tillage and Conventional Tillage Systems in Mollisols of China

Soil water and temperature are important factors to reflect variations in soil heat flows especially for tillage systems. The objective of this study was evaluate the performance CoupModel predicting effect practices on processes conventional (CT) no-tillage (NT) systems with straw mulching semi-arid high-latitude Mollisols northeast China. This model calibrated evaluated a three-year experiment from 2009 2011 field station, using measurements daily storage profiles CT NT separately. results showed that under model, temperatures were well simulated at 0–90 cm depths CT, as indicated by R2 ≥ 0.97, nRMSE = 27.5–38.7% −1.02 °C ≤ ME −0.31 °C, 0–130 depth (R2 0.01–0.06, 19.6–37.1%, 13.3 mm 28.2 mm) more uncertainty. “Moderate good agreements” achieved NT. In general, temporal spatial CoupModel. Although decreased evaporation—thus improving content, root zone soil—and lowered frozen depths, it reduced temperatures, which could influence crop growth. It concluded proved be functional tool predict seasonal frost conditions China estimate temperature, water, energy balance, dynamics relatively complex combined plant and/or no covered surface.