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Article

A Modified Bare Soil Index to Identify Bare Land Features during Agricultural Fallow-Period in Southeast Asia Using Landsat 8

1
The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
2
Center of Excellence on Energy Technology and Environment (CEE), PERDO, Ministry of Higher Education, Science, Research and Innovation, Bangkok 10140, Thailand
3
College of Environment and Natural Resources, Can Tho University, Can Tho 94115, Vietnam
4
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
*
Author to whom correspondence should be addressed.
Academic Editor: Marina Cabral Pinto
Land 2021, 10(3), 231; https://doi.org/10.3390/land10030231
Received: 20 January 2021 / Revised: 22 February 2021 / Accepted: 22 February 2021 / Published: 25 February 2021
(This article belongs to the Special Issue Geochemical Mapping in Land Managing)
Bare soil is a critical element in the urban landscape and plays an essential role in urban environments. Yet, the separation of bare soil and other land cover types using remote sensing techniques remains a significant challenge. There are several remote sensing-based spectral indices for barren detection, but their effectiveness varies depending on land cover patterns and climate conditions. Within this research, we introduced a modified bare soil index (MBI) using shortwave infrared (SWIR) and near-infrared (NIR) wavelengths derived from Landsat 8 (OLI—Operational Land Imager). The proposed bare soil index was tested in two different bare soil patterns in Thailand and Vietnam, where there are large areas of bare soil during the agricultural fallow period, obstructing the separation between bare soil and urban areas. Bare soil extracted from the MBI achieved higher overall accuracy of about 98% and a kappa coefficient over 0.96, compared to bare soil index (BSI), normalized different bare soil index (NDBaI), and dry bare soil index (DBSI). The results also revealed that MBI considerably contributes to the accuracy of land cover classification. We suggest using the MBI for bare soil detection in tropical climatic regions. View Full-Text
Keywords: agricultural fallow period; bare soil index; bare soil detection; Landsat 8; modified bare soil index (MBI); remote sensing; spectral indices agricultural fallow period; bare soil index; bare soil detection; Landsat 8; modified bare soil index (MBI); remote sensing; spectral indices
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MDPI and ACS Style

Nguyen, C.T.; Chidthaisong, A.; Kieu Diem, P.; Huo, L.-Z. A Modified Bare Soil Index to Identify Bare Land Features during Agricultural Fallow-Period in Southeast Asia Using Landsat 8. Land 2021, 10, 231. https://doi.org/10.3390/land10030231

AMA Style

Nguyen CT, Chidthaisong A, Kieu Diem P, Huo L-Z. A Modified Bare Soil Index to Identify Bare Land Features during Agricultural Fallow-Period in Southeast Asia Using Landsat 8. Land. 2021; 10(3):231. https://doi.org/10.3390/land10030231

Chicago/Turabian Style

Nguyen, Can T., Amnat Chidthaisong, Phan Kieu Diem, and Lian-Zhi Huo. 2021. "A Modified Bare Soil Index to Identify Bare Land Features during Agricultural Fallow-Period in Southeast Asia Using Landsat 8" Land 10, no. 3: 231. https://doi.org/10.3390/land10030231

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