ISO 23400:2021

مواصفة قياسية دولية   الإصدار الحالي · اعتمدت بتاريخ ٠٨ أكتوبر ٢٠٢١

Guidelines for the determination of organic carbon and nitrogen stocks and their variations in mineral soils at field scale

ملفات الوثيقة ISO 23400:2021

الإنجليزية 21 صفحات
الإصدار الحالي
54.29 BHD

مجال الوثيقة ISO 23400:2021

This document presents a method to quantify the soil organic carbon and nitrogen stocks in mineral soils at plot scale. It also provides guidance on how to detect and quantify simultaneously the variations of carbon and nitrogen stocks over time in mineral soils at field scale. It is based on several documents already published[2],[3],[4],[5],[6],[7],[8].

This document does not apply to organic soils, soils with permafrost, wetland soils, or to soil layers prone to submergence below the groundwater table.

NOTE 1   The possibility of increasing soil C storage is viewed as a means to sequester atmospheric carbon dioxide (CO2) and mitigate greenhouse gas (GHG) emissions. Information on soil nitrogen (N) stocks is crucial because it interacts with carbon cycling through plant nutrition and organic matter decomposition, and leakage of N is of environmental concern (e.g. N2O emissions, NO3- leaching). Therefore, it is becoming increasingly important to measure accurately the impact of changes of land uses and practices on organic carbon and nitrogen stocks.

NOTE 2   While understanding changes in soil inorganic carbon it is important also to understand the land-atmosphere exchange of CO2, measuring stocks of soil inorganic carbon is outside the scope of this document.

الأكثر مبيعاً

GSO 150-2:2013
 
مواصفة قياسية خليجية
فترات صلاحية المنتجات الغذائية - الجزء الثاني : فترات الصلاحية الاختيارية
BH GSO 150-2:2015
GSO 150-2:2013 
مواصفة قياسية بحرينية
فترات صلاحية المنتجات الغذائية - الجزء الثاني : فترات الصلاحية الاختيارية
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GSO 2055-1:2015 
لائحة فنية بحرينية
الأغذية الحلال – الجزء الأول : الاشتراطات العامة للأغذية الحلال
GSO 2055-1:2015
 
لائحة فنية خليجية
الأغذية الحلال – الجزء الأول : الاشتراطات العامة للأغذية الحلال

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