QUALITY CONTROL IN SOIL SURVEY. INTRODUCTION: I. THE CHOICE OF MAPPING UNIT

THE QUALITY OF A SOIL MAP DEPENDS ON ITS UTILITY FOR PRACTICAL PURPOSES AND SHOULD BE JUDGED BY THIS STANDARD. THE INTRODUCTION SUGGESTS HOW UTILITY MAY BE MEASURED, AND BRIEFLY LISTS DECISIONS IN THE PLANNING AND EXECUTION OF A SOIL SURVEY WHICH DETERMINE THE UTILITY OF THE RESULTING SOIL MAP. PART I DISCUSSES POLICY DECISION ON THE KIND OF MAPPING UNIT, REVIEWS DIFFERENT KINDS OF MAPPING UNITS AND PRESENTS A SCORING PROCEDURE TO COMPARE THE CEILINGS WHICH EACH IMPOSES ON THE UTILITY OF A SOIL MAP. THE SCORING PROCEDURE ASSUMES THAT THE WHOLE EXTENT OF EVERY MAPPED SOIL UNIT EXACTLY MATCHES ITS DESCRIPTION IN THE MAP LEGEND. THE AVERAGE PROBABILITY FOR THE SOIL PROFILE CLASS AT ANY RANDOM SITE WITHIN A SURVEY AREA TO BE CORRECTLY PREDICTED IS ESTIMATED. THE SCORE IS A CEILING, ATTAINABLE ONLY IF THE EXECUTION OF THE SURVEY WERE PERFECT, AND NO MAPPING UNIT CONTAINED PROFILE CLASSES NOT PREDICTED FROM ITS LEGEND. THE IMPORTANCE OF ADEQUATE AIDS TO PREDICT THE OCCURRENCE OF INDIVIDUAL PROFILE CLASSES WITHIN COMPOUND MAPPING UNITS CONTAINING MORE THAN ONE IS STRESSED. /AUTHOR/

  • Availability:
  • Supplemental Notes:
    • Vol 22, No 1, PP 32-49
  • Authors:
    • Bie, S W
    • Beckett, P H
  • Publication Date: 1971-3

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00236053
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 15 1971 12:00AM