Alphabetical listing of categories: L

La -> lanthanum (4) laboratories (28) laboratories -> research facilities (4) laboratory-induced magnetization analysis (1) laboratory methods (107) laboratory reference materials -> materials standards (3) lagoons -> lakes (33) laguna -> lakes (33) lahars (2) lake beds -> lakes (33) lake channels -> channels (4) lake circulation -> water circulation (5) lake districts -> land regions (11) lake ecosystems -> freshwater ecosystems (26) lake regions -> land regions (11) crater lakes -> lakes (33) dry lakes -> lakes (33) intermittent lakes -> lakes (33) intermittent oxbow lakes -> lakes (33) intermittent salt lakes -> lakes (33) lakes (33) oxbow lakes -> lakes (33) salt lakes -> lakes (33) underground lakes -> caves (5) Arctic land -> tundras (3) land-tied islands -> islands (11) land use and land cover (55) cadastral and legal land descriptions (1) legal land descriptions -> cadastral and legal land descriptions (1) landfills -> disposal sites (2) sanitary landfills -> disposal sites (2) boat landings -> hydrographic structures (33) landmarks (monuments) -> monuments (2) land partitioning systems -> cadastral and legal land descriptions (1) land regions (11) Landsat images (7) -> image collections WITH multispectral imaging landscape -> land surface characteristics (54) landslide maps (5) -> landslides WITH maps and atlases landslide preparedness (6) -> hazard preparedness WITH landslides landslides -> physiographic features (214) landslides (27) landslide susceptibility assessment (7) landslide susceptibility maps (2) -> landslide susceptibility assessment WITH maps and atlases land surface characteristics (54) land surveying (4) land use and land cover (55) land use change (18) land use maps -> maps and atlases (219) markup and query language development (1) La Nina -> ocean-atmosphere interaction (7) lanthanide series elements (1) lanthanum (4) boat launches -> hydrographic structures (33) lava -> volcanic rocks (6) lava areas -> lava fields (2) lava fields (2) lava flows -> volcanic activity (65) laws and regulations (2) ozone layer (1) leaching (analytical method) -> chemical analysis (55) lead (6) lead-210 dating -> radiometric dating (12) lead mines -> mine sites (15) lifelong learning resources (5) leased areas (government) -> administrative areas (8) leased zones (government) -> administrative areas (8) cadastral and legal land descriptions (1) legal land descriptions -> cadastral and legal land descriptions (1) legal processes -> laws and regulations (2) legation buildings -> buildings (12) legislation -> laws and regulations (2) lepidoptera -> butterflies and moths (3) leprosariums -> medical facilities (2) aquifer level -> groundwater level (24) ground-water level -> groundwater level (24) groundwater level (24) surface-water level (7) trophic level dynamics -> food web (3) libraries and archives (12) lichens (6) LIDAR (16) life history -> population and community ecology (371) lifelong learning resources (5) life sciences (417) LIght Detection and Ranging (LIDAR) -> LIDAR (16) visible light imaging (4) light stable-isotope analysis -> light stable isotope analysis (14) light stable isotope analysis (14) lignite resources -> coal resources (13) limekilns -> industrial sites (2) limnology (19) digital line graphs -> geospatial datasets (115) liquefaction (1) high-pressure liquid chromatography -> liquid chromatography (1) liquid chromatography (1) lists of publications -> catalogs and indexes (98) lithification -> geologic processes (308) lithologic maps (17) -> rocks and deposits WITH maps and atlases lithology -> rocks and deposits (143) continental lithosphere (1) lithosphere (6) oceanic lithosphere (4) lithostratigraphy (5) littoral ecosystems -> coastal ecosystems (38) liverworts and hornworts (1) livestock husbandry -> agriculture (13) livestock water use -> agricultural water use (10) llanos -> plains (1) bed load -> sediment transport (46) suspended load -> sediment transport (46) total maximum daily load -> TMDL (2) locales -> populated places (7) localities -> populated places (7) populated localities -> populated places (7) location measurement -> geolocation measurement (39) lodes (mineral) -> mineral deposit areas (76) lodges -> buildings (12) loess -> unconsolidated deposits (20) borehole logging (7) borehole temperature logging (1) electrical resistivity logging (2) gamma-ray logging (1) well logging -> borehole logging (7) long-term ecological monitoring (14) fire lookouts -> towers (1) lost rivers -> streams (85) parking lots -> parking sites (1) LTERs -> ecological research sites (2) Lu -> lutetium (5) luminescence dating (3) optically-stimulated luminescence dating -> luminescence dating (3) lutetium (5)

Alphabetical index of categories: L