Soil Salinity Mapping Using SAR Sentinel-1 Data and Advanced Machine Learning Algorithms: A Case Study at Ben Tre Province of the Mekong River Delta (Vietnam)
SUPPORT VECTOR REGRESSION
; ORGANIC-CARBON STOCKS
; DIELECTRIC-PROPERTIES
; RANDOM FORESTS
; METHODS PLSR
; REMOTE
; MOISTURE
; SALINIZATION
; FEATURES
; BIOMASS
WOS学科分类:
Remote Sensing
WOS研究方向:
Remote Sensing
英文摘要:
Soil salinity caused by climate change associated with rising sea level is considered as one of the most severe natural hazards that has a negative effect on agricultural activities in the coastal areas in most tropical climates. This issue has become more severe and increasingly occurred in the Mekong River Delta of Vietnam. The main objective of this work is to map soil salinity intrusion in Ben Tre province located on the Mekong River Delta of Vietnam using the Sentinel-1 Synthetic Aperture Radar (SAR) C-band data combined with five state-of-the-art machine learning models, Multilayer Perceptron Neural Networks (MLP-NN), Radial Basis Function Neural Networks (RBF-NN), Gaussian Processes (GP), Support Vector Regression (SVR), and Random Forests (RF). For this purpose, 63 soil samples were collected during the field survey conducted from 4-6 April 2018 corresponding to the Sentinel-1 SAR imagery. The performance of the five models was assessed and compared using the root-mean-square error (RMSE), the mean absolute error (MAE), and the correlation coefficient (r). The results revealed that the GP model yielded the highest prediction performance (RMSE = 2.885, MAE = 1.897, and r = 0.808) and outperformed the other machine learning models. We conclude that the advanced machine learning models can be used for mapping soil salinity in the Delta areas; thus, providing a useful tool for assisting farmers and the policy maker in choosing better crop types in the context of climate change.
1.Vietnam Acad Sci & Technol, Ho Chi Minh City Inst Resources Geog, Mac Dinh Chi 1,1 Dist, Ho Chi Minh City 700000, Vietnam 2.Vietnam Acad Sci & Technol, Space Technol Inst, Hoang Quoc Viet 18, Hanoi 10000, Vietnam 3.Katholieke Univ Leuven, Div Forest Nat & Landscape, Dept Earth & Environm Sci, B-3000 Leuven, Belgium 4.Mil Tech Acad, ITSE, Hoang Quoc Viet 236, Hanoi 10000, Vietnam 5.RIKEN, Geoinformat Unit, Ctr Adv Intelligence Project AIP, Chuo Ku, Mitsui Bldg,15th Floor,1-4-1 Nihonbashi, Tokyo 1030027, Japan 6.Univ Tehran, Sch Surveying & Geospatial Engn, Coll Engn, Tehran 1417466191, Iran 7.Duy Tan Univ, Inst Res & Dev, Da Nang 550000, Vietnam 8.Univ South Eastern Norway, Geog Informat Syst Grp, Dept Business & IT, N-3800 Bo I Telemark, Norway
Recommended Citation:
Pham Viet Hoa,Nguyen Vu Giang,Nguyen An Binh,et al. Soil Salinity Mapping Using SAR Sentinel-1 Data and Advanced Machine Learning Algorithms: A Case Study at Ben Tre Province of the Mekong River Delta (Vietnam)[J]. REMOTE SENSING,2019-01-01,11(2)