The sum of total Kjeldahl nitrogen (ammonia, organic and reduced nitrogen) and nitrate-nitriteĬation exchange capacity - buffered at pH7Ĭapacity of the fine earth fraction to hold exchangeable cations, estimated by buffering the soil at 'pH7'Ĭation exchange capacity - buffered at pH8Ĭapacity of the fine earth fraction to hold exchangeable cations, estimated by buffering the soil at 'pH8'Ĭapacity of the fine earth fraction to hold exchangeable cations at the pH of the soil (ECEC). Gravimetric content of organic carbon and inorganic carbon in the fine earth fraction Gravimetric content of organic carbon in the fine earth fraction The content of carbonate in a liming material or calcareous soil calculated as if all of the carbonate is in the form of CaCO 3 (in the fine earth fraction) also known as inorganic carbon When specified in the source meta data, 'aggregated' information on the analytical properties is provided with the data (see additional information on coding analytical methods in Procedures Manual).Ĭodes, properties, units of measurement and description as used in WoSIS Latest (since 2018) Codeīulk density of the fine earth fraction a, equilibrated at 33 kPaīulk density of the fine earth fraction, air driedīulk density of the fine earth fraction, field moistīulk density of the fine earth fraction, oven dryīulk density of the whole soil including coarse fragments, air driedīulk density of the whole soil including coarse fragments, field moistīulk density of the whole soil including coarse fragments, oven dry This list has grown since the original list, which focused on the soil properties defined in the GlobalSoilMap specifications. The complement of soil properties (45) provided in WoSIS Latest is presented in the table below. ISRIC report 2020/01, ISRIC - World Soil Information, Wageningen, 166 p. World Soil Information Service (WoSIS) - Towards the standardization and harmonization of world soil data. Ribeiro E, Batjes NH and van Oostrum AJM 2020. Batjes NH, Ribeiro E, van Oostrum AJM, Leenaars J, Hengl T, and Mendes de Jesus J 2017: WoSIS - Providing standardised soil profile data for the world, Earth System Science Data, 9, 1-14. Standardised soil profile data to support global mapping and modelling (WoSIS snapshot 2019). Batjes NH, Ribeiro E and van Oostrum AJM, 2019. These scripts were kindly prepared by our Guest Researcher David Rossiter. You can also extract the R code from the compiled tutorial or the R markdown script and paste into your favourite R environment. R markdown is explained by the R Studio project. If you want to run it in your own environment (most likely), download it and load the *. Here you can find R markdown scripts, as well as their compiled PDF, to access the two forms of WoSIS database products.
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