Characteristics of wet carbon deposition in a semi-arid catchment at Loess Plateau, China

Abstract

Abstract. Wet carbon deposition is a critical node of the global carbon cycle, but little is known about dissolved organic and and September. The estimated annual wet carbon depositions were 1.91, 1.89 g C m -2 yr -1 for DOC and DIC, which were higher than those of other sites and lower than those in the tropical and sub-tropical sites. Furthermore, the loess dust deposition process provides soil parental material in soil formation process and might be another source of carbon at the LPR.Therefore, the given results reflect characteristics of wet carbon deposition process during concentrated rainfall season in a 20 semi-arid catchment of the LPR. Our preliminary results suggest that further investigation is needed on carbon source and deposition flux from atmosphere at long term temporal and large scale for revealing the global carbon cycle.