https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.6 2026-03-19T10:41:57.720Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/215f69b9-259a-4b82-9f8f-f96d4f5aaad2 ORGANIC MATTER Date=2017-03-10 User Id=tstevens Entity=Definition Operation=UPDATE Field=reference System Note=update Definition Old Value=The Nature and Properties of Soils, Prentice Hall, 1996. New Value=The Nature and Properties of Soils, Prentice Hall, 1996. Date=2017-03-10 User Id=tstevens Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Soil constituents consisting of a wide range of organic (carbonaceous) substances, including living organisms, carbonaceous remains of organisms which once occupied the soil, and organic compounds produced by current and past metabolism in the soil. New Value=Soil constituents consisting of a wide range of organic (carbonaceous) substances, including living organisms, carbonaceous remains of organisms, which once occupied the soil, and organic compounds produced by current and past metabolism in the soil. Date=2024-09-26 User Id=tstevens Entity=WeightedRelation Operation=INSERT System Note=insert WeightedRelation New Value=id: null related concept uuid: 83cf51f6-8c03-4f6d-b605-fde9818c7805 relationship type: null relationship value: null generated by: null Soil constituents consisting of a wide range of organic (carbonaceous) substances, including living organisms, carbonaceous remains of organisms, which once occupied the soil, and organic compounds produced by current and past metabolism in the soil. 2024-09-26 13:01:41.0