Theme 1: Ecological Agriculture
Modern agriculture
Agricultural production
Agricultural technology
Agricultural development 
Artificial cultivation
Microbial Agricultural Ecology
Plant Agricultural Ecology
Animal Agricultural Ecology
Human Agricultural Ecology
Insect Agricultural Ecology
Fish Agricultural Ecology
Individual agricultural ecology
Population Agricultural Ecology
Community Agricultural Ecology
Ecological System Agricultural Ecology
Ecological Agriculture in Farmland
Forest ecological agriculture
Grassland ecological agriculture
Fishery Ecological Agriculture
Multi layer utilization types of materials
Biological mutualistic symbiosis
Resource development and utilization
Types of Environmental Governance
Types of sightseeing tourism
Modern technological achievements
Modern management methods
The structure of agricultural ecosystems
Energy flow
Tree seedling cultivation
Material cycle
Agricultural Resources and Benefits
Regulation of Agricultural Ecosystems
Agricultural Ecological Engineering
Ecological agriculture
Factory production
Agricultural machinery activities
Nature Conservation and Environmental Ecology
Animal production
Animal Medicine
Forestry research
Primary processing activities of agricultural products
Aquatic product
Grass Science
Topic 2: Energy and Resources
Renewable energy
Solar energy
Biomass energy 
Wind energy
Wave and tidal energy
Geothermal energy
Nuclear energy
Bioenergy
Hydrogen and fuel cells
Energy materials
Energy Management System
Development and utilization of energy
Nuclear Energy Engineering
Biodiesel fuel
Photovoltaic Systems and Solar Energy Engineering
Wind power generation
Solar cell technology
Energy supply scheme design and optimization
Energy industry policies
Energy Policy Equipment Technology
Energy saving technology
Coal Mining Engineering and Technology
Energy storage technology
Energy Security and Clean Utilization
Mineral Resources and Mining Engineering
Energy Equipment and Energy Management
Energy Conversion and Energy Efficiency
New energy vehicles
Oil and Gas Resources Engineering
Hybrid energy system
New technologies for oil and gas development, etc
Topic 3: Environmental Engineering
Groundwater remediation
Groundwater management
Water Resources and Watershed Management
Management Practice
Establishment of water quality target standards
Water quality classification
Wastewater and sludge treatment
Sludge treatment and reuse
Global warming
Ozone layer depletion
Carbon capture and storage
Biofuels
Air Pollution and Control
Air emissions trading
Solid waste management
Optimization of the collection system
Recycling and reusing
Stable prices of waste
Resource management
Technical aspects of handling and disposal methods (landfill, heat treatment, etc.)
Management of hazardous solid waste
Sustainability of society and environment, etc