Soil Organic Carbon Estimation via Remote Sensing and Machine Learning Techniques: Global Topic Modeling and Research Trend Exploration
Abstract
:1. Introduction
2. Materials and Methods
2.1. Literature Retrieval Methods
2.2. BERTopic Modeling Methods
2.2.1. Data Preprocessing
2.2.2. Topic Selection, Keyword Analysis, and Model Accuracy
2.2.3. Visualization and Additional Analysis Methods
2.3. Other Visualization Methods
3. Results
3.1. Basic Publication Statistics
3.2. Research Trends and Landscape of SOC Estimation Using RS Techniques
3.2.1. The Utilization Frequency of Different RS Platforms
3.2.2. BERTopic Modeling Analysis for Studies of SOC Estimation Using RS
3.3. Research Landscape of SOC Estimation via RS and ML Techniques
3.3.1. Author Keyword Co-Occurrence Analysis
3.3.2. Dynamics and Characterization of Author Keywords and Keywords Plus over Time
3.3.3. BERTopic Modeling
4. Discussion
4.1. BERTopic Modeling Clusters for SOC with RS Techniques
4.2. Relationship between SOC Estimation and ML and RS Techniques
4.2.1. Keyword Clustering and Dynamics in SOC Research
4.2.2. In-Depth Analysis of BERTopic Modeling Clusters
4.3. Challenges in the Integration of RS and ML Techniques for SOC Estimation
4.4. Limitations
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Li, T.; Cui, L.; Wu, Y.; McLaren, T.I.; Xia, A.; Pandey, R.; Liu, H.; Wang, W.; Xu, Z.; Song, X.; et al. Soil Organic Carbon Estimation via Remote Sensing and Machine Learning Techniques: Global Topic Modeling and Research Trend Exploration. Remote Sens. 2024, 16, 3168. https://doi.org/10.3390/rs16173168
Li T, Cui L, Wu Y, McLaren TI, Xia A, Pandey R, Liu H, Wang W, Xu Z, Song X, et al. Soil Organic Carbon Estimation via Remote Sensing and Machine Learning Techniques: Global Topic Modeling and Research Trend Exploration. Remote Sensing. 2024; 16(17):3168. https://doi.org/10.3390/rs16173168
Chicago/Turabian StyleLi, Tong, Lizhen Cui, Yu Wu, Timothy I. McLaren, Anquan Xia, Rajiv Pandey, Hongdou Liu, Weijin Wang, Zhihong Xu, Xiufang Song, and et al. 2024. "Soil Organic Carbon Estimation via Remote Sensing and Machine Learning Techniques: Global Topic Modeling and Research Trend Exploration" Remote Sensing 16, no. 17: 3168. https://doi.org/10.3390/rs16173168