Abstract
Arid region characterizes more than 30% of the Earth’s total land surface area and the area is still increasing due to the trends of desertification, yet the extent to which it modulates the global C balance has been inadequately studied. As an emerging technology, IoT monitoring can combine researchers, instruments, and field sites and generate archival data for a better understanding of soil abiotic CO2uptake in arid region. Images’ similarity analyses based on IoT monitoring can help ecologists to find sites where the abiotic uptake can temporally dominate and how the negative soil respiration fluxes were produced, while IoT monitoring with a set of intelligent video recognition algorithms enables ecologists to revisit these sites and the experiments details through the videos. Therefore, IoT monitoring of geospatial images, videos, and associated optimization and control algorithms should be a research priority towards expanding insights for soil abiotic CO2uptake and a better understanding of how the uptake happens in arid region. Nevertheless, there are still considerable uncertainties and difficulties in determining the overall perspective of IoT monitoring for insights into the missing CO2sink.
Highlights
Because of human activities after the Industrial Revolution and the produced substantial climate changes, atmospheric CO2 levels have increased more than 30% in the past century [1]
Analyses of the potentials of Internet of Things (IoT) monitoring for insights into the missing CO2 sink in the present study are based on the collected geospatial images and videos from the field sites at the south edge of the Gurbantunggut Desert in the north of Xinjiang Uygur Autonomous Region, China (Figure 1)
The further optimized histogram-based images similarity algorithm was applied to search field sites where soil abiotic CO2 uptake can temporally dominate
Summary
Because of human activities after the Industrial Revolution and the produced substantial climate changes, atmospheric CO2 levels have increased more than 30% in the past century [1] This major environmental issue has motivated scientists to carry out a huge effort to quantify the sources and sinks of the atmospheric CO2, and the existence of a “missing CO2 sink” is concluded [1,2,3,4,5,6,7]. Recent studies of the arid and semiarid ecosystems suggest that the missing CO2 sink can be partly attributed to unneglectable soil abiotic CO2 uptake in arid region [21,22,23,24] Such uptake has been long-term overlooked in estimating the net ecosystem exchange of CO2 [NEE] around the world. Arid region characterizes more than 30% of the Earth’s total land surface area and the area is still increasing due to the trends of global desertification, yet the extent to which it modulates the global C balance has been inadequately studied [25,26,27,28,29,30,31,32,33]
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