Figure 6
The thematic map of research themes is divided into four quadrants by dashed lines. The horizontal axis is labeled “Relevance degree (Centrality)” and the vertical axis is labeled “Development degree (Density)”. The quadrants are labeled in the corners as “Niche Themes” in the top left, “Motor Themes” in the top right, “Emerging or Declining Themes” in the bottom left, and “Basic Themes” in the bottom right. The data is represented by colored circular markers clustered with specific thematic keywords. In the “Motor Themes” quadrant, a large blue circle is labeled “sustainability”, “stakeholder”, and “corporate social responsibility”. Positioned further toward the top right of the same quadrant is a pink circle labeled “climate change”, “emission control”, and “carbon”. In the center, crossing the horizontal dashed line between the left quadrants, a green circle is labeled “triple bottom line”, “environmental management”, and “economic and social effects”. In the “Emerging or Declining Themes” quadrant, a small purple circle is labeled “environmental economics”, “carbon emission”, and “China”. Near the intersection of the bottom quadrants, an orange circle is labeled “sustainable development”, “decision making”, and “environmental impact”. A hexagonal logo is present on the bottom right.Thematic map