Figure 2
The illustration contains multiple graphs arranged vertically and in pairs. In the top graph, the horizontal axis shows years from 2016 to 2025 with increments of 1 unit. The left vertical axis ranges from 0 to 16 in increments of 2 units, and the right vertical axis ranges from 0 percent to 25 percent in increments of 5 percent. Bars represent the “number of publications”, and a line represents the “percentage”. Values are approximately 1 in 2016, 2 in 2017, 1 in 2018, 0 in 2019, 7 in 2020, 6 in 2021, 14 in 2022, 12 in 2023, 14 in 2024, and 6 in 2025. The percentage line follows a similar trend, starting low, dipping near 0 percent in 2019, peaking at around 20 to 25 percent in 2022 and 2024, and then declining in 2025. In the second graph, the horizontal axis lists countries including Hong Kong, China, Australia, United Kingdom, Singapore, New Zealand, South Africa, Nigeria, Taiwan, Chile, Kenya, Ethiopia, Germany, Malaysia, Sri Lanka, Botswana, and Jordan. The vertical axis ranges from 0 to 18 in increments of 2 units. Bars show values with Hong Kong around 17; China, 16; Australia, 11; United Kingdom and Singapore, around 4 each; New Zealand, South Africa, and Nigeria, around 3 each; Taiwan, around 2; and the remaining countries, around 1 each. In the third graph, the horizontal axis shows the categories “Developed Countries”, “Developing Countries”, and “Both”. The vertical axis ranges from 0 to 40 in increments of 5 units. Bars indicate approximately 36 for developed countries, 24 for developing countries, and about 1 for both. In the fourth graph, the horizontal axis shows the regions “Asia”, “Oceania”, “Africa”, “Europe”, and “South America”. The vertical axis shows the number of publications ranging from 0 to 45 in increments of 5 units. Bars indicate approximately 41 for Asia, 14 for Oceania, 8 for Africa, 4 for Europe, and 1 for South America. In the fifth graph, the horizontal axis shows study types: “Case studies”, “Analytical”, “Review”, and “Others”. The vertical axis ranges from 0 to 40 in increments of 5 units. Bars indicate approximately 34 for case studies, 16 for analytical, 4 for review, and 8 for others. In the sixth graph, the horizontal axis shows the themes “General Drivers or Barriers of Implementation”, “Policy Review”, “Implementation Review of Australia”, “Government Strategy”, and “Others”. The vertical axis ranges from 0 to 30 in increments of 5 units. Bars indicate approximately 27 for General Drivers or Barriers of Implementation, 13 for Policy Review, 9 for Implementation Review of Australia, 4 for Government Strategy, and 10 for Others. Note: All numerical data values are approximated.General mapping (Temporal, spatial, development status, continental trend, methodology, and study scope)