Subject
agriculture
4
climatology
3
ecosystem
3
forestry
3
landscape
3
pollution control
3
agricultural use
2
biotope
2
agronomy
1
ecobalance
1
ecology
1
environmental compatibility
1
environmental impact assessment
1
environmental program
1
environmental protection
1
forest decline
1
plant ecology
1
soil chemistry
1
soil map
1
soil mechanics
1
soil protection
1
sustainable development
1
sustainable use
1