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ìàøùéå úéøáä úåöøàá úåçéçö úåò÷ø÷

úåò÷ø÷ ïåéîì úåëøòî

úåéúåëàìî ïä äìàëùëå úéããä úåøù÷úäì òééñì úðî ìò åøöåð úåò÷ø÷ ïåéî úåëøòî
úîé÷ä äéèää úà åëéùîä êà ãçî äáøä úåáëøåîä úà åèùéô äìà úåëøòî .úåìáâåîå
ïåéî úåëøòî é"ò úåøàåúî úåò÷ø÷ .àì åà éðåéâä ñéñá ìò åéä íà ïéá ,êãéàî íìåòá
,íéàì÷çì .("? ò÷ø÷ úàæ äî" äàø) äîöò ò÷ø÷ä úøãâä àåä ïåùàøä ïåéøèéø÷ä ,úåáø
ãçà íãà øåáò ò÷ø÷ .íäéëøö éô ìò úåðåù úåøãâä ùé íéøçàå íéâåìåàéâ ,íéñãðäî
.øçà íãà øåáò ääæ äéäúù äçéèáî äððéà

 

,(úåéîå÷î) éîå÷î øåàú ìò íéññåáîä äìà :íéâåñ éðùì ïåéîä úåëøòî úà âååñì ïúéð
,äëåøà äéøåèñéä úåìòá ïä úåéîå÷îä úåëøòîä .(úåéòãî) éòãî øåàú ìò íéññåáîä äìàå
úåò÷ø÷ .("úåçéçö úåò÷ø÷ ìù äéøåèñéää" äàø ) úéåùëò úåçúôúä ïðä úåéòãîäù ãåòá
úåçéçöì íà .("úåçéçö úåò÷ø÷ ïåéî" äàø) äçéçö äáéáñá åçúôúäù úåò÷ø÷ ïä úåçéçö
íå÷î úåçéçö úåò÷ø÷ì éæà ,úåò÷ø÷ì ïåéî úåëøòî çåúéôì øåù÷ øùà ìëá úåáéùç ùé
.úéòãî åà úéîå÷î äøãâä ìò úññåáî úëøòîä íà ïéá ,åæ úëøòîá áåùç

 

úåéîå÷î ïåéî úåëøòî

úåëøòî ìù äðáîä .úåò÷ø÷á íéùîúùî øùà íéùðàä é"ò åçúôúä úåéîå÷î ïåéî úåëøòî
ò÷ø÷ä úà íéðëî åá íéøåàúá ùåîù åà ,óåðå ò÷ø÷ ìëì íù úéð÷ä é"ò åà ïä åìà ïåéî
é"ò éåäéæì úåðúéð úåò÷ø÷ .éìåç åà ïîù ,íç ,íåãà òáö :ïåâë äéúåðåëú ñéñá ìò
,('åëå óåðä íå÷éî ,äøåèñ÷è ,òáö) ò÷ø÷á úåéì÷éæéô úåòôåú :ïåâë íéøåøá íéðééôàî
ìò áåøì íéññåáî åìà íéøåàú .úéååìð äéçîöå (äôöäå øåöéé úìåëé) ò÷ø÷ä ãå÷ôú
÷ø ,éòãîä ïåéîì åìà íéøåàúá ùåîéù äùòð àì øáòá .ò÷ø÷ä ÷ùîîì úåáéùç éìòá úåðåëú
íãàì ùîùì úåìåëé úåéîå÷î úåëøòî .íúåà ãòúì åìçä íéâåìåôåøúðàå íéôøâåàéâ äðåøçàì
éàì÷ç ìåäéðì úåñçéúäá ø÷éòá ,íééîå÷îä ò÷ø÷ä éùîúùî íò úøåù÷úì äôù ïéòî éðåöéç
ìåäéð øåáò éòãîå éðëè òãéî ,óñåðá ÷ôñì úåìåëé úåéîå÷î úåëøòî .íéòåá÷ íéáàùîå
.íééîå÷î íéáàùî ìù çåúéôå ìåäéðá áø óñåî êøò íäì øùà íééòáè íéáàùî úåëøòî

 

ñçéúîå William & Ortis Solorio é"ò ùøùåä ,(úéðúàä ò÷ø÷ä úøåú) éâåìåãôåðúà çðåîä
úåëøòîä úà ãòúì ìçä H.C. Conklin âåìåôåøúðàä .úåéîå÷îä ïåéîä úåëøòî ãåîéìì
úèéñøáéðåàá ,úåçéçö úåò÷ø÷ éãåîéìì ä÷ìçîä ìù íéø÷çî .1950 úðùî úåéîå÷îä
áø òãéî ïëåúá ìåìëì úåìåëé íéçéçö íéøåæàá úåéîå÷î ïåéî úåëøòî éë åàøä ,äðåæéøà
úåéåùò ïéôåìéçì åà ,(äéðèéøåàîá ìåàô úëøòî :ïåâë) úåéòãîä ïåéîä úåëøòîì äàååùäá
éë úåðòåè øùà úéãåòñä áøòá úåéàåãá úåëøòî :ïåâë) êøò ìòá éò÷ø÷ òãéî àìì úåéäì
äéðøåôéì÷á ,äöçîì çéçöä øåæàá .(íäééç çøåà ìò òéôùîä áéëøî äðéà ò÷ø÷ä úåðåù
ìù äìåçëä úéñøçä" äðåëîä ãáìá úçà ò÷ø÷ âåñ äøéãâî åáéìî ìù úéîå÷îä úëøòîä
úåéòá úåá÷òá ãøåé äëøòå äéðáå çåúéô éëéìäú íéìáâåî åæ ò÷ø÷á .Malibu blue clay "åáéìî
.úåøåîç æå÷éð

 

úåéòãîä úåëøòîä

 

åà ò÷ø÷ä úåçúôúä éëéìäú ìò úåññáúîä åìà :íéâåñ éðùì úå÷ìçð åìà úåëøòî
íéáø íéðééôàî ùé úåáø úåëøòîì .íééúåîë íéðééôàî ìò úåññáúîä åìàå äúåøöååéä
ìåëé åìà úåëøòî ìù äðáîä .íéãéçà åìà úåëøòî éô ìò ïåéîì íéðåéøèéø÷ä .íéâåñä éðùî
òãéî øùàë .úåéèèñ ïðéà åìà ïåéî úåëøòî ,óñåðá .éøôñî åà éøåàéú ,éëøøéä úåéäì
ìù ïåéî úåëøòîá íéùåòù éôë äðùéä ïåéîä úëøòîá âååéñä úà íéðùî ,óñååúî ùãç
úìåëé øùôàúúù éãë úåò÷ø÷ä âååéñ ìù øåàú óéñåäì íâ ùé åììä íééåðéùì .úåéçå íéçîö
.úåøçà ïåéî úåëøòî ïéá íéàúäì

 

úåáéùç úåìòá úåàøðù úåðåëúì éë çéèáäì íéëéøö ïåéîä úåëøòî ìù íéçúôîä ,ììëë
úåéòãîä úåëøòîä .úìòåú åðîî ÷éôäì ïúéð äéäéù éãë ÷éôñî øö äøãâä ìåáâ ùé ïåéîì
êà ïåéîä êéìäúá úåéøùôà úåò÷ø÷ ìù íîåé÷ ìåìùì éãë úåéùåîéù ,úåéëøøéää ø÷éòáå
øáòî ò÷ø÷á ùåîéùå ìåäðì úåöìîä øùôàì éãë èøåôî ò÷ø÷ øåàú ùøãð úàæ íò ãçé
.ïåéîì

 

ò÷ø÷ úåðåëú ãöéë øéáñéù êë çúåô úåò÷ø÷ä ïåéî úëøòî úññáúî åéìò êéìäúä
íéì÷éñéô ,íéâåìåéá íéëéìäú áëò úåøåøá úåáëù úøöåé ò÷ø÷ .ïîæä íò íéðúùî äúòôåäå
úðúéð íé÷ôåàä úøéöé .íé÷ôåà íéðåëî äìà íéøåæà .øîåç ãáåà åà øáèöî íäáù íééîéëå
åæ äçðä .íéòåá÷ íéøàùð íéøçà ò÷ø÷ éøöåé íéëéìäúå íéì÷àäù ïîæ ìë äëøòäì
øùà úåçéçö úåò÷ø÷á úåðãä åìà ø÷éòá ,ïåéî úåëøòî ìù íéðåù íéâåñ øåáò äéòá úøöåé
äúåà øåáò ãçà âååéñî øúåé ìá÷ì úåøùôà äðùé .íéçì íéàðú úçú é÷ìç ïôåàá úåçúôúî
çðæ USDA-ä ,úåøçàå åæ äéòá ìùá .íéñçéúî ò÷ø÷ä úåøöååéä êéìäú äæéàì éåìú ,ò÷ø÷
Soil Taxonomy äðåëîä ïåéîä úëøòî úà çúéôå ò÷ø÷ä úåøöåéäì úñçéúîä úëøòîä úà
äáéñäå äîåã úëøòîá íéùîúùî íéñãðäî íâ .íééúåîë úåðåëúå íéðééôàî ìù úññåáî øùà
.äøåøá êëì

U.S. Texture TriangleFrench Texture Triangle

ò÷ø÷ä í÷øî .úåðåùä ïåéîä úåèéù øåáò íéîåã çøëäá íðéà ò÷ø÷ âååéñì íéðåéøèéø÷ä
úåëøòî éúù ïéá ò÷ø÷ âååéñ íéàúäì íéñðî øùàë úåøöåð øùà úåéòáì äáåè àîâåã àåä
øåáò .ò÷ø÷á íé÷öåîä íé÷é÷ìçä ìù éñçéä ìãåâä éòè÷î úà øàúî í÷øîä .úåðåù ïåéî
íâ .íéùîúùî ïåéî úèéù äæéàá éåìú ,äðåù úåéäì äìåëé í÷øî ìù úéîù äøãâä ,úçà ò÷ø÷
ïåéîä úåëøòîá "éúéñøç ìåç" äøãâäá ìùîì åîë íéðåù ïåéîä úåìåáâ ,íéäæ úåîùä íà
ìãåâ é"ôò âååéñì íéñçéúî øùàë úøáåâ äéòáä .úéúôøöä úëøòîä úîåòì USDA-ä ìù
òéôåî úåøçàá åìéàå î"î <0.002 øèå÷ ìòá ÷é÷ìçë úøãâåî úéñøç :àîâåãì .÷é÷ìçä
,íéì÷éñéô íéðéôàî :ïåâë íéôñåð íéðééôàîì .î"î <0.005 ìù øèå÷ ìòá ÷é÷ìçë
úøùôàî äððéà åæ äãáåò .úåðåùä úåëøòîä ïéá éâååéñ ïåéîã ïéà ,íéâåìåéáå íéì÷éîéë
.ò÷ø÷ä ìù èøåôî øåàú óñååúî íà àìà úåëøòîä ïéá ãçàì ãçà ìù äîàúä

 

é÷åç .úåðåøñçå úåðåøúé ùé úåéøôñîä åà úåéøåàúä ,úåéëøøéää ïåéîä úåëøòî ìëì
äòéãé àìì âååéñä ìù ääåáâäå äëåîðä äîøä úà øéãâäì íéøùôàî úéëëøéää úëøòîä
(Typic Haplargid úáøåòî ,úéñøç úéìåñ :àîâåãì) ,ïåéîä úàöåú .éøùôàä ïåéîä ìù úîã÷åî
÷ùîîá úåøåù÷ä úåèìçäá úéùåîéù úåéäìî ãåàî ä÷åçø ,áø òãéî ú÷ôñî øùà
äìà øùàî íéøçà íéçèùá íúåà íéìéòôî øùàë íéìãáä ùé åìà úåëøòîá ,ïë åîë .ò÷ø÷ä
êåîð íééôéìç íéðåéè÷ ìåáé÷ ùé ä÷éøôà áøòîî úéìåç ò÷ø÷ì ,àîâåãì .åçúåô íä íäá
æåçàá íéìãáäì íåøâì äéåùò éùàøä ïåéè÷ä âåñ ìù ãáìá äèòî äòéøâ åà úôñåú .ãåàî
äéëøéøää) Ultisol íå÷îá Alfisol :ò÷ø÷ä ìù äðåù äøãâäì ïëìå íéñéñáä úéååø
.(USDA-ä éôì øúåéá äëåîðä

 

ìù ïåéî úåëøòî :àîâåãì .íééãåçé íéëøö øåáò úåçúåôî áåøì úåéøåàú ïåéî úåëøòî
íéðééôàîä úà âéöäì úðî ìò úåðè÷ úåéúåà úîåòì úåìåãâ úåéúåàá ùåîéù éãé ìò úéìâðàá úåâååñî ò÷ø÷ä úåéøåô
,úåàöîúäì úåì÷ ãåàî úåèåùô åìà úåëøòî .íéîéåñî íéìåáé ìù úåéøåôä ÷ùîîì íéáåùçä
.ìáâåî êøò úåìòá êà

 

úéñãðäå úéòãî øåàú úåìåëé úåìòá êà úåéîå÷îä úåëøòîì ãåàî úåîåã úåéîùä úåëøòîä
ìåäéð úåèìçä òåöéáì òééñì éåùò øùà åéã èøåôî òãéî ÷ôñì úåìåëé åìà úåëøòî .øúåé äáåè
äîéùî àéä åæ úëøòî úåòöîàá úåò÷ø÷ øôñî ìù äàååùä .úéîå÷î äîøá ÷øå êà úåéñéñá
äîéã÷î øùà úéøôñî úëøòîì àîâåã àéä USDA-ä úëøòîá ò÷ø÷ä úåøãñ .ìèð úáø
ãçàì íéàúéù éåðéù øáåò úåò÷ø÷ úøãñ ìù ïåéî .Soil Taxonomy ïåéîä úëøòî úà
-ä úëøòî ìù áåìéù .úéëøøéää úëøòîì øù÷ä øîùéù êåú Soil Taxonomy-ä éâååéñî
í÷ùîî ìåäéðå äðáä ,éåäéæì çåë áø éìë íéðúåð ò÷ø÷ä úøãñ úëøòîå Soil Taxonomy
úåðéãîá ÷úòåî úåéäì ìåëé úåéøôñî úåëøòîå úåéëøøéä úåëøòî ìù áåìéùä .úåò÷ø÷ ìù
.úåîé÷ úåéîå÷î úåëøòîá ùåîéù é"ò úåçúôúî úåöøàá ãçåéîáå úåøçà

 

äçéçöä ò÷ø÷ä úàîâåãì ñçéúð ,äæì äæ øåù÷ ìéòì øîàðä ìë ãöéë íéâãäì úðî ìò
úøãñë 1910 úåðùá-USDA ä é"ò äúðåë øùà (éîå÷î íù) "Malibu blue clay" åáéìîî
Grumusol-ë äâååñå (äðùé úéîù ïåéî úëøòî) Diablo ò÷ø÷
úåòöîàá) äðúùä Diablo ò÷ø÷ä úøãñ ìù øåàúä ,æàî .(äðùé úéëøøä ïåéî úëøòî)
úéèéè÷îñ ,úåðéãòä úåò÷ø÷ä úçôùî :ùãç âååéñ ìá÷úðå (äùãçä úéîùä ïåéîä úëøòî
.(úéåùëò úéëøøéä ïåéî úëøòî) (Aridic Haploxererts) ìù úåîçäå

 

:ìàøùéá ïåéîä úëøòî

.õéáå÷éáø éô ìò ïåéîä úëøòî

.(íéáø íéùîúùî éãé ìò úôãòåî) ïåìòé ïãå ïã ìàåé éô ìò ïåéîä úëøòî

.USDA-ä éôì ïåéîä úëøòî

 

Partial List of Soil Classification Systems

US systems

  • USDA Keys to Soil Taxonomy is a hierarchical system and used almost exclusively in the US for agricultural, biological, and geological studies. It has been applied throughout the world (Soil Survey Staff, 2003).
  • USDA Soil Series is a nominal system of soils of the US.
  • AASHTO System is used mostly by state and county highway departments (AASHTO, 1978).
  • FAA Classification is used by airfield designers (FAA, 1967).
  • Unified Classification is preferred by most geotechnical engineers that specializing in earth dams and foundation engineering (US Army, 1967).
  • Abandon US systems occur in older literature (Marbut, 1935, Baldwin et al. 1938, Thorp and Smith, 1949).

French systems

The French systems have been widely used in former colonies and current territories.

  • French Soil Reference System (Référentiel pédologique français) is hierarchical based on soil formation processes and morphology (Duchaufour, 1988).
  • 1967 Soil Classification is also hierarchical based on soil formation processes and morphology (Finkl, 1982, p. 215-24; CPCS, 1967)

FAO system

Originally developed as a legend to its soils map of the world it has been applied throughout the world by United Nations sponsored projects and soil classifiers trained to use this system. Many countries have modified this system to fit their particular needs.

Others

  • Australian systems: (Finkl, 1982, pp. 295-301; Butler, 1980; Northcote, 1962)
  • Brazilian systems: (Finkl, 1982, pp. 247-258; Costa de Lemos, 1968)
  • British systems: (Finkl, 1982, pp. 225-39; Butler, 1980; Avery, 1973)
  • Canadian systems: (Finkl, 1982, pp. 240-6; Butler, 1980; DSS, 1978)
  • Dutch systems: (Finkl, 1982, pp. 259-69; Bakker & Schelling, 1966)
  • German systems: (Finkl, 1982; pp. 277-94; Mückenhausen, 1965)
  • Polar systems: Tedrow proposed classification of Polar Desert, Subpolar Desert and Cold Desert soils (Finkl, 1982, pp. 324-6).
  • Russian systems: (Finkl, 1982, pp. 92-104; Butler, 1980; Basinski, 1959)

References

American Association of State Highways and Transportation (AASHTO) (1978). Standard specifications for transportation materials and methods of sampling and testing. AASHTO Designation: M 145-73, 12th ed. Washington, D.C.: AASHTO.

Avery, B.W. (1973). Soil classification in the soil survey of England and Wales. Journal of Soil Science 24:324-38.

Bakker, H. de & J. Schelling (1966). Systeem van bodemclassificatie voor Nederland: De hogere niveaus. Wageningen, The Netherlands: Center for Agricultural Publications and Documentation. 217 p.

Baldwin, M., C.E. Kellogg, and J. Thorp (1938). Soil classification. In Soils and men: Yearbook of agriculture. Washington D.C.: U.S. Department of Agriculture. pp. 979-1001.

Basinski, J.J. (1959). The Russian approach to soil classification and its recent development. Journal of Soil Science 10:14-26.

Butler, B.E. (1980). Soil classification for soil survey. Oxford: Clarendon Press. 129 p.

Costa de Lemos, R. (1968). The main tropical soils of Brazil: Approaches to soil classification. FAO World Soil Resources Report 32. Rome: Food and Agriculture Organization of the United Nations. pp. 95-106.

Commission de Pédologie et de Cartographie des Sols (CPCS) (1967). Classification des sols. l'Institut national de la recherche agronomique (INRA). Paris: Laboratoire de Géologie-Pédologie de l'ENSA.

Canada. Department of Supply and Services. (DSS) (1978). History of soil classification in Canada. Canada Department Agriculture Publication; no. 1646. Canada: DSS. 164 p.

Duchaufour, P. (1988). Pédologie. Paris: Masson. 224 pp.

Federal Aviation Administration (FAA) (1967). Airport Paving. Washington D.C.: FAA.

Finkl, C.W. (1982). Soil classification. Stroudsburg, Penn.: Hutchinson Ross Publishing Company. 391 p.

Jamangne, M. (1967). Bases et techniques d'une cartographie des sols. Vol. 18. Versailles: l'Institut national de la recherche agronomique.

Marbut, C.F. (1935). Soils of the United States. In Atlas of American agriculture. Part III. Washington D.C.: U.S. Department of Agriculture. pp. 1-98.

Mückenhausen, E. (1965). The soil classification system of the Federal Republic of Germany. Pedologie. Spec. Ser. 3:57-74.

Northcote, K.H. (1962). The factual classification of soils and its use in soil research. 7th International Congress of Soil Science, Transactions. New Zealand. pp. 291-297.

Thorp, J. and G.D. Smith (1949). Higher categories of soil classification. Soil Science 67:117-126.

United States Army (1967). The Unified Soil Classification System. Technical Memorandum; no. 3-357, U.S. Army Waterways Experiment Station, Office of the Chief of Engineers.

Williams, B. J. & C. A. Ortiz-Solorio (1981). Middle American folk soil taxonomy. Annals of the Association of American Geographers. 71(3)335-357.

World Bank (1994). Desertification: Implementing the Convention. Washington D.C.: The World Bank, Environmental Department. pp. 47.

Text by Joe Tabor
URL:http://cals.arizona.edu/OALS/soils/hclassifsystems.html
Last revised: Last revised: 24 November 2003
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