Classification
UHP - Protection of nature and landscape
UHN - Landscape ecology
33
LCK - Ecology - general aspects
23
LCM - Terrestrial ecology
16
LWE - Agriculture - general aspects
8
GPA - Geobiology - general
5
UCA - Environmental problems, man and environment - general aspects
5
UHC - Area planning and environment
5
LCL - Biotopes, ecosystems
4
LCN - Ecology - soil sciences
4
LWV - Agriculture - plant protection
4
LCMC - Plants - ecology
3
LCH - Ecology - methods
2
LCMG - Animals - ecology
2
LWF - Agriculture - methods
2
LWH - Agriculture - soil sciences
2
UEA - Environmental policy and economy - general aspects
2
UEG - Environmental programs and expertises
2
UMGE - Carbon capture and storage (CCS)
2
UPVF - Surface waters - streams, rivers, lakes
2
AFK - Research institutions - Germany
1
GDAB - Rock mechanics, soil mechanics
1
GMAD - Organic geochemistry
1
GNA - Geology - soil sciences
1
GSC - Remote sensing
1
GTAK - Hydrogeology
1
GUA - Geography - general
1
GUAB - Geography - anthropological
1
HAE - Popular medicine
1
LAL - Biology - general aspects
1
LCNA - Soil microbiology
1
LCP - Limnology
1
LCV - Ecology - models
1
LET - Phytopathology
1
LHH - Microbiology - methods
1
LWO - Agricultural ecology, sustainable agriculture
1
UCEA - Environmental impact
1
UCQ - Environmental technology
1
UED - Environmental policy
1
UHCH - Urban areas
1
UHK - Traffic and environment - incl. automobile exhaust gas
1
UMN - Air pollution control and measurement
1
UPN - Water protection, water quality, clean water
1
UPVC - Groundwater
1
UPVN - Ocean water, coastal waters
1
URA - Soil chemistry
1
UVM - Environmental aspects of hydrocarbons - incl. oil
1
YPS - Economy of the developing countries
1