{"id":39,"date":"2019-07-17T16:30:36","date_gmt":"2019-07-17T16:30:36","guid":{"rendered":"https:\/\/striresearch.si.edu\/bci-soil-map\/?page_id=39"},"modified":"2019-07-23T14:31:19","modified_gmt":"2019-07-23T14:31:19","slug":"abbreviations","status":"publish","type":"page","link":"https:\/\/striresearch.si.edu\/bci-soil-map\/summary\/abbreviations\/","title":{"rendered":"Abbreviations"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Abbreviations<\/th>\nDefinition<\/td>\n<\/tr>\n<\/thead>\n
asl<\/th>\nAbove sea level<\/td>\n<\/tr>\n
AvK<\/th>\nAvailable potassium<\/td>\n<\/tr>\n
AvP<\/th>\nAvailable Phosphate<\/td>\n<\/tr>\n
AWC<\/th>\nAvailable water capacity (amount of water held in soil at suctions in the range for root uptake; = MC%@ FC \u2013 MC% @PWP)<\/td>\n<\/tr>\n
BCI<\/th>\nBarro Colorado Island<\/td>\n<\/tr>\n
BCNM<\/th>\nBarro Colorado Nature Monument<\/td>\n<\/tr>\n
BS%<\/th>\nBase saturation percentage (=TEB\/CEC)<\/td>\n<\/tr>\n
C<\/th>\nClay.\u00a0 Finest size class of mineral particles (< 0.002 mm)<\/td>\n<\/tr>\n
Catapan<\/th>\nCatastro de Panama (CRA)<\/td>\n<\/tr>\n
CEC<\/th>\nCation exchange capacity (conventionally determined at pH7)<\/td>\n<\/tr>\n
CL<\/th>\nClay loam<\/td>\n<\/tr>\n
COLE<\/th>\nCoefficient of linear extension (%)<\/td>\n<\/tr>\n
Colluvium<\/th>\nLocal hillwash, moved by overland flow and slow creep.<\/td>\n<\/tr>\n
Complex<\/th>\nSoil mapping unit with several co-dominant classes.<\/td>\n<\/tr>\n
Consociation<\/th>\nSoil mapping unit with one soil class dominant and others as minor constituents.<\/td>\n<\/tr>\n
CRA<\/th>\nComision de Reforma Agraria (MIDA)<\/td>\n<\/tr>\n
Creep<\/th>\nSlow gravitational mass movement of colluvium downslope.<\/td>\n<\/tr>\n
CTFS<\/th>\nCenter for Tropical Forest Science<\/td>\n<\/tr>\n
C\/V<\/th>\nChroma and value in Munsell Soil Color coding system<\/td>\n<\/tr>\n
Dbh, drh<\/th>\nDiameter at breast (1.3 m above ground level) or reference (0.6 m above the highest buttress) height<\/td>\n<\/tr>\n
EBS<\/th>\nEffective base saturation (= TEB\/ECEC as %)<\/td>\n<\/tr>\n
ECEC<\/th>\nEffective cation exchange capacity (=TEB + Extr Al)<\/td>\n<\/tr>\n
Eluvial<\/th>\nSoil horizon formed by the selective washing out of some original components<\/td>\n<\/tr>\n
Exch<\/th>\nExchangeable cations extractable with 1M NH4<\/sub>OOCH3<\/sub><\/td>\n<\/tr>\n
Extr<\/th>\nExtractable with 1M KCl<\/td>\n<\/tr>\n
FAO<\/th>\nFood & Agriculture Organisation of United Nations<\/td>\n<\/tr>\n
FC<\/th>\nField capacity (MC% at suction of 0.1 or 0.3 atmosphere)<\/td>\n<\/tr>\n
Fine earth<\/th>\nFraction of soil with particle size < 2mm<\/td>\n<\/tr>\n
gibb<\/th>\nGibbsite (Al2<\/sub>O3<\/sub> clay mineral)<\/td>\n<\/tr>\n
gilgai<\/th>\nDynamic soil surface undulations due to shrink-swell of expansible clays in seasonal climates<\/td>\n<\/tr>\n
GIS<\/th>\nGeographical information system<\/td>\n<\/tr>\n
Gley<\/th>\nSoil that is permanently wet and poorly aerated, with predominantly greyish colours, due to the reduction of free iron. May have locally oxidised rust – coloured mottles as spots and around root channels.<\/td>\n<\/tr>\n
GPS<\/th>\nGlobal positioning system<\/td>\n<\/tr>\n
HAC<\/th>\nHigh activity clay<\/td>\n<\/tr>\n
Horizon<\/th>\nSoil layer<\/td>\n<\/tr>\n
Hydrature<\/th>\nSupply of air and water to biota by soil pore system (sensu<\/em> White, 1985)<\/td>\n<\/tr>\n
ICP<\/th>\nInduction coupled plasma spectrometer<\/td>\n<\/tr>\n
IGN<\/th>\nInstituto Geografico Nacional, Tommy Guardia<\/td>\n<\/tr>\n
Illuvial<\/th>\nSoil horizon formed by enrichment of some components washed in from eluvial horizon(s) above<\/td>\n<\/tr>\n
Kaol<\/th>\nKaolinite (1:1 aluminosilicate clay mineral)<\/td>\n<\/tr>\n
L<\/th>\nLoam (Mixed soil with substantial proportions of all three of the main fine earth size classes, i.e. clay, silt and sand)<\/td>\n<\/tr>\n
LAC<\/th>\nLow activity clay<\/td>\n<\/tr>\n
Linear<\/th>\nStraight slope with similar gradients up- and downslope<\/td>\n<\/tr>\n
LTER<\/th>\nLong term ecological research<\/td>\n<\/tr>\n
MC%<\/th>\nMoisture content % (by mass)<\/td>\n<\/tr>\n
MIDA<\/th>\nMinisterio de Desarollo Agropecuaria (RoP)<\/td>\n<\/tr>\n
Munsell<\/th>\nSystem of soil colour notation, operated by matching soil against standard colour chips. Colour described by \u2018hue\u2019 (Spectral composition – red, yellow, blue, green); \u2018value\u2019 (dilution with multispectral white), & \u2018chroma\u2019 (darkness)<\/td>\n<\/tr>\n
ND<\/th>\nNo data<\/td>\n<\/tr>\n
NH4<\/sub>OOCH3<\/sub><\/th>\nAmmonium acetate (1M, buffered at pH 7, for extracting exchangeable cations)<\/td>\n<\/tr>\n
OC<\/th>\nOrganic carbon<\/td>\n<\/tr>\n
PM<\/th>\nSoil parent material<\/td>\n<\/tr>\n
Profile<\/th>\nSequence of soil horizons from surface to parent material<\/td>\n<\/tr>\n
PWP<\/th>\nPermanent wilting [point (soil moisture suction of 15 atmospheres = 1.5 MPa)<\/td>\n<\/tr>\n
Regolith<\/th>\nAll surface materials; includes solum (true soil), saprolite (in situ<\/em> weathered rock), and mobile materials like colluvium or alluvium.<\/td>\n<\/tr>\n
RoP<\/th>\nRepublic of Panama<\/td>\n<\/tr>\n
S<\/th>\nSand (coarsest fine earth particle size class, 0.05 \u2013 2 mm in USDA)<\/td>\n<\/tr>\n
Series<\/th>\nEquivalent to soil class on BCI. Sixth level of subdivision in USDA Soil Taxonomy.<\/td>\n<\/tr>\n
SI<\/th>\nSmithsonian Institution<\/td>\n<\/tr>\n
Si<\/th>\nSilt (intermediate fine earth mineral particle size class, 0.002 \u2013 0.05 mm in USDA)<\/td>\n<\/tr>\n
Slickenside<\/th>\nStriated, polished clay pressure face, usually oblique, on prismatic or wedge structures in expansible clay subsoils. Diagnostic of vertic properties and Vertisols in ST.<\/td>\n<\/tr>\n
SMR<\/th>\nSoil Moisture Regime, as defined in ST<\/td>\n<\/tr>\n
SMU<\/th>\nSoil mapping unit<\/td>\n<\/tr>\n
SOC<\/th>\nSoil organic carbon<\/td>\n<\/tr>\n
Solum<\/th>\nTrue soil, in which physicochemical and bio-turbation processes have obliterated visible traces of parent rock structure.<\/td>\n<\/tr>\n
SOM<\/th>\nSoil organic matter<\/td>\n<\/tr>\n
ST<\/th>\nSoil Taxonomy (USDA system of soil classification)<\/td>\n<\/tr>\n
STR<\/th>\nSoil temperature regime, as defined in ST<\/td>\n<\/tr>\n
STRI<\/th>\nSmithsonian Tropical Research Institute<\/td>\n<\/tr>\n
Surface wash<\/th>\nMovement of detached surface soil particles by overland flow.<\/td>\n<\/tr>\n
Tr<\/th>\nTrace<\/td>\n<\/tr>\n
Tufa<\/th>\nHard coating of secondary CaCO3<\/td>\n<\/tr>\n
TEB<\/th>\nTotal exchangeable bases (= exchangeable Ca + Mg + Na + K)<\/td>\n<\/tr>\n
USDA<\/th>\nUnited States Department of Agriculture<\/td>\n<\/tr>\n
WRB<\/th>\nWorld Reference Base for Soil Resources (FAO system of soil classification)<\/td>\n<\/tr>\n
XRD<\/th>\nX-ray diffraction (for determination of clay minerals)<\/td>\n<\/tr>\n
Z, Zi<\/th>\nSilt (intermediate fine earth particle size class, 0.002 \u2013 0.05 mm in USDA)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

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