The abiotic contribution to total CO 2 flux for soils in arid zone
作者： J. Ma , Y. Li , R. Liu
DOI: 10.5194/BGD-12-11217-2015
关键词:
摘要: Abstract. As an important component of ecosystem carbon budgets, soil dioxide (CO2) flux is determined by a combination series biotic and abiotic processes. Although there evidence that the can be in total CO2 flux, its relative importance has never been systematically assessed. In this study, (Rtotal) was partitioned into (Rbiotic) (Rabiotic) components over eight typical landscapes desert–oasis ecotone, including cotton field, hops halophyte garden, reservoir edge, native saline desert, alkaline soil, dune crest interdune lowland Gurbantunggut Desert, these two analyzed. Results showed Rabiotic always contributed to Rtotal for landscapes, but degree contribution varied greatly. fields, ratio extremely low (
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