Is Current Research on How Climate Change Impacts Global Food Security Really Objective?
Abstract
:1. Introduction
2. Materials and Methods
2.1. Climate Change Influences on Food Security Data
2.2. Global and Regional Food Crop Production Data
3. Results
3.1. Global and Regional Food Crop Production
3.2. Search Results on the ISI Web of Science Core Collection Platform
3.3. Cluster Analysis Results
- (1)
- Field and lab results (blue parts in Figure 3) were from a variety of field experimentation, such as Enclosure Chamber (EC), Open Top Chamber (OTC), Free-Air CO2 Enrichment (FACE), and so on. Most of these studies focused on how climate change, including atmospheric CO2 concentration change, could impact crop growth and productivity (macroscopic scale) or food quality or crop physiology (microscopic scale).
- (2)
- Model results (red parts) are from those studies focused on predicting the impacts of climate change on food security at the national, regional, or even global scale. Wheat as a C3 model crop, which generally had a positive response to an elevated CO2, was selected for almost all predictions.
- (3)
- Policy regulations (green parts), mainly discussed how climate change could affect food security through regulations of sociology, economy, and policies.
- (4)
- Ecology (yellow parts), which focused on how climate change could affect food security through the global carbon or nitrogen cycles, including greenhouse gas emissions, tillage, and so on.
3.4. Results of Research Hotspot Analysis
4. Discussion and Sustainability Policy Suggestions
4.1. Objectivity of Research Facilities
4.2. Representativeness of Field Research Site Selection
4.3. Suggestions
5. Conclusion
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Liu, W.; Chen, Y.; He, X.; Mao, P.; Tian, H. Is Current Research on How Climate Change Impacts Global Food Security Really Objective? Foods 2021, 10, 2342. https://doi.org/10.3390/foods10102342
Liu W, Chen Y, He X, Mao P, Tian H. Is Current Research on How Climate Change Impacts Global Food Security Really Objective? Foods. 2021; 10(10):2342. https://doi.org/10.3390/foods10102342
Chicago/Turabian StyleLiu, Wangang, Yiping Chen, Xinhua He, Ping Mao, and Hanwen Tian. 2021. "Is Current Research on How Climate Change Impacts Global Food Security Really Objective?" Foods 10, no. 10: 2342. https://doi.org/10.3390/foods10102342