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Abstract

Soil acidification is one of the top concerns of the coastal wetland areas. In recent decades, by reclamation of coastal potential acid sulfate soils for agricultural activities (rice field, shrimp farming,...), humans have caused soil acidification. pH and the presence of secondary iron minerals (hematite, goethite) and ferric iron minerals (jarosite, schwertmannite, copiapite) are considered as the indicators of acidic soil. This study is to rapidly detect acidic status of soil through identifying secondary iron minerals by characterized band ratios. Sentinel-2A data with B4/B2 and B11/B8 can determine iron oxides and ferric iron minerals. The identified spectral result of fallowed ponds on ratio images shows the correlation with measured pH and mineral composition data (XRD). This research promises applicability of used band rationing method as well as potential of Sentinel-2A data in monitoring soil acidification in coastal wetland areas.


 



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Article Details

Issue: Vol 2 No 1 (2018)
Page No.: 49-56
Published: Dec 30, 2018
Section: Original Research
DOI: https://doi.org/10.32508/stdjsee.v2i1.472

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Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
Tran, T. B., Hai, H. Q., & Thang, N. H. (2018). Identify soil acidification due to reclamation of coastal potential acid sulfate soils from shrimp farming activities in Can Gio, Ho Chi Minh City. Science & Technology Development Journal - Science of The Earth & Environment, 2(1), 49-56. https://doi.org/https://doi.org/10.32508/stdjsee.v2i1.472

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