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Detecting bean stress response to CO 2 leakage with the utilization of leaf and canopy spectral derivative ratio

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  • Jiang Jinbao
  • Michael D Steven
  • Cai Qingkong
  • He Ruyan
  • Guo Haiqiang
  • Chen Yunhao

Abstract

Carbon capture and storage (CCS) is one of the critical techniques for mitigating global climate warming which can capture and store the CO 2 released during industrial processes into deep geological sites. However, there is a possible risk that the CO 2 might leak from under the ground. Therefore, it is important that CO 2 leakage spots on the surface of sequestration fields be detected at large scale and on a long‐term basis. The purpose of this study was to design a new model to identify CO 2 leakage spots through monitoring the spectral change of vegetation on the surface of the sequestration fields. A field simulation experiment was performed at the Sutton Bonington campus of the University of Nottingham to collect the leaf and canopy reflectance of beans, which grew in soil with different levels of CO 2 concentration. Visible symptoms of bean stress caused by CO 2 leakage may include the reducing bean vigor and the bean leaves turning yellow. The canopy spectra and leaf spectra were processed by a smoothing, continuum removal and first derivative method. We found that, while the CO 2 concentration of the soil increased, the sum of the first derivative reflectance in the 500–550 nm (SD g ) increased and that in the 680–760 nm (SD r ) decreased gradually compared with that of the control plots. Moreover, the newly developed ratio index SD r /SD g can be effectively used to distinguish gassed and ungassed beans at both leaf and canopy scales. Significant correlation was found between the SPAD values and the SD r /SD g indices (R-super-2 = 0.5687, n = 197). This study indicates that hyperspectral remote sensing techniques can be used to detect CO 2 leaking spots by investigating the spectral change of vegetation reflectance in the sequestration fields.

Suggested Citation

  • Jiang Jinbao & Michael D Steven & Cai Qingkong & He Ruyan & Guo Haiqiang & Chen Yunhao, 2014. "Detecting bean stress response to CO 2 leakage with the utilization of leaf and canopy spectral derivative ratio," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 4(4), pages 468-480, August.
  • Handle: RePEc:wly:greenh:v:4:y:2014:i:4:p:468-480
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    File URL: http://hdl.handle.net/10.1002/ghg.1409
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    Cited by:

    1. Jiang, Jinbao & Steven, Michael D. & He, Ruyan & Chen, Yunhao & Du, Peijun, 2016. "Identification of plants responding to CO2 leakage stress using band depth and the full width at half maxima of canopy spectra," Energy, Elsevier, vol. 100(C), pages 73-81.
    2. Chen, Yun & Guerschman, Juan P & Cheng, Zhibo & Guo, Longzhu, 2019. "Remote sensing for vegetation monitoring in carbon capture storage regions: A review," Applied Energy, Elsevier, vol. 240(C), pages 312-326.
    3. Du, Ying & Jiang, Jinbao & Yu, Zijian & Liu, Ziwei & Pan, Yingyang & Xiong, Kangni, 2024. "A knowledge guided deep learning framework for underground natural gas micro-leaks detection from hyperspectral imagery," Energy, Elsevier, vol. 294(C).

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