Remote Sensing of CO2 Absorption by Saline-Alkali Soils: Potentials and Constraints: Preliminary Theory and Methodology

Remote Sensing of CO2 Absorption by Saline-Alkali Soils: Potentials and Constraints: Preliminary Theory and Methodology

CO2 absorption by saline-alkali soils was recently demonstrated in the measurements of soil

respiration fluxes in arid and semiarid ecosystems and hypothetically contributed to the long-thought

“missing carbon sink.”This paper is aimed to develop the preliminary theory and methodology for the

quantitative analysis of CO2 absorption by saline-alkali soils on regional and global scales. Both the

technological progress of multispectral remote sensing over the past decades and the conjectures of

mechanisms and controls of CO2 absorption by saline-alkali soils are advantageous for remote

sensing of such absorption. At the end of this paper, the scheme for remote sensing is presented and

some unresolved issues related to the scheme are also proposed for further investigations.

Author (s) Details

Wenfeng Wang

State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China and University of Chinese Academy of Sciences, Beijing 100093, China.

Xi Chen

State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.

Zhi Pu

College of Computer and Information Engineering, Xinjiang Agricultural University, Urumqi 830052, China.

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