Modeling the contribution of abiotic exchange to CO2 flux in alkaline soils of arid areas

• DOI: 10.1007/s40333-013-0187-6
• Publication Date: 2013-08-02T09:34:33Z
• Authors: WenFeng Wang; Xi Chen; GePing Luo; LongHui Li
• Keywords: Alkali soil

Recent studies on alkaline soils of arid areas suggest a possible contribution abiotic exchange to soil CO2 flux (Fc). However, both the overall and its drivers remain unknown. Here we analyzed environmental variables suggested as by previous constructed function these model Fc in areas. An automated system was employed measure Manas River Basin Xinjiang Uygur autonomous region, China. Soil pH, temperature at 0–5 cm (Ts), volumetric water content (θs) air 10 above surface (Tas) were simultaneously analyzed. Results highlight reduced sensitivity Ts good prediction $$F_c = R_{10} Q_{10} ^{{{\left( {T_{as} - 10} \right)} \mathord{\left/ {\vphantom {{\left( {10}}} \right. \kern-\nulldelimiterspace} + r_7 q_7 ^{\left( {pH 7} \lambda T_{as} \mu \theta _s e$$ which represents sum biotic components. This presents an approximate method quantify