Emerging technologies for in situ measurement of soil carbon |
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| Authors: | Ronald J Gehl Charles W Rice |
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| Institution: | (1) Dep. of Crop and Soil Sciences, Michigan State Univ., 580 PSSB, East Lansing, MI 48824-1325, USA;(2) Dep. of Agronomy, 2004 Throckmorton Plant Sciences Center, Kansas State Univ., Manhattan, KS 66506-5501, USA |
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| Abstract: | Carbon sequestration in the terrestrial biosphere is critical to mitigating the increasing anthropogenic CO2 content of the atmosphere. However, improved efficiency of methods for soil C measurement is important to better estimate
terrestrial C inventories and fluxes at a regional and global scale. Laboratory based measurement of soil C involves intensive,
time consuming, and costly methodology that limits applicability for large land areas. Recently, research efforts have focused
on measuring soil C in situ using a variety of methods. These methods include Laser Induced Breakdown Spectroscopy (LIBS), Inelastic Neutron Scattering
(INS), near-infrared spectroscopy (NIRS), and remote sensing. Basic fundamentals of each of these in situ methods for soil C determination are presented, and the differences among the methods and their relative advantages and disadvantages
are discussed. |
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