Simulating the effect of tillage practices with the global ecosystem model LPJmL (version 5.0-tillage)

摘要: Abstract. The effects of tillage on soil properties, crop productivity, and global greenhouse gas emissions have been discussed in the last decades. Global ecosystem models limited capacity to simulate various effects tillage. With respect decomposition organic matter, they either assume a constant increase due or they ignore Hence, do not allow for analysing the effects and cannot evaluate, example, reduced or no (referred here as “no-till”) practises mitigation practices climate change. In this paper, we describe implementation tillage-related global ecosystem model LPJmL. extended is evaluated against reported differences between no-till management several soil properties. To end, simulation results are compared with published meta-analyses effects. general, able reproduce observed global, well regional, patterns carbon and water fluxes. However, modelled N fluxes deviate from literature values and need further study. addition module LPJmL5 opens up opportunities assess impact agricultural practices under different scenarios implications productivity, carbon sequestration, emissions, other environmental indicators.