Table 9.

Cluster (#2) related topics and references.

Basic topics	Related topics	Citing references
Environmental Management	Environmental Impact, Biodiversity Land Use, Protected Areas, Wildlife Conservation, Forest Management Sustainable Agriculture	[[127], [128], [129]]
Environmental Protection	Pollution Control, Waste management, Environmental Legislation, Conservation of Natural Resources, Environmental Monitoring	[[43], [130], [131]]
Agriculture	Sustainable Agriculture, Crop Production, Soil Management Irrigation, Livestock Farming Agroforestry	[[132], [133], [134]]
Environmental Sustainability	Sustainable Tourism, Renewable Energy, Green Building, Water Conservation, Circular Economy, Carbon Footprint, Ecosystem Restoration	[[135], [136], [137]]