Soil erosion is unlikely to drive a future carbon sink in Europe.

ABSTRACT: Understanding of the processes governing soil organic carbon turnover is confounded by the fact that C feedbacks driven by soil erosion have not yet been fully explored at large scale. However, in a changing climate, variation in rainfall erosivity (and hence soil erosion) may change the amount of C displacement, hence inducing feedbacks onto the land C cycle. Using a consistent biogeochemistry-erosion model framework to quantify the impact of future climate on the C cycle, we show that C input increases were offset by higher heterotrophic respiration under climate change. Taking into account all the additional feedbacks and C fluxes due to displacement by erosion, we estimated a net source of 0.92 to 10.1 Tg C year^-1 from agricultural soils in the European Union to the atmosphe

SUBMITTER: Lugato E 

PROVIDER: S-EPMC6235540 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature