Characterization of potential CO2 emissions in agricultural areas using magnetic susceptibility

Scientia Agricola

Fábio Tiraboschi Leal¹  Ana Beatriz Coelho França¹  Diego Silva Siqueira¹  Daniel De Bortoli Teixeira¹  José Marques Júnior¹  Newton La Scala Júnior¹ 

关键词: magnetism;    soil respiration;    spatial variability;    geostatistics;   

DOI  :  10.1590/0103-9016-2014-0420

来源: SciELO

【 摘 要 】

ABSTRACTSoil CO2 emissions (fCO2) in agricultural areas have been widely studied in global climate change research, but its characterization and quantification are restricted to small areas. Because spatial and time variability affect emissions, tools need to be developed to predict fCO2 for large areas. This study aimed to investigate soil magnetic susceptibility (MS) and its correlation with fCO2 in an agricultural environment. The experiment was carried out on a Typic Eutrudox located in Guariba-SP, Brazil. Results showed that there was negative spatial correlation between fCO2 and the magnetic susceptibility of Air Dried Soil (MSADS) up to 34.3 m distant. However, the fCO2 had no significant correlation with MSADS, magnetic susceptibility of sand (MSSAND) nor clay (MSCLAY). However, MSADS could be a supplemental mean of identifying regions of high fCO2 potential over large areas.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License