{"id":394359,"date":"2024-10-20T04:13:40","date_gmt":"2024-10-20T04:13:40","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-234002021\/"},"modified":"2024-10-26T07:54:14","modified_gmt":"2024-10-26T07:54:14","slug":"bs-iso-234002021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-234002021\/","title":{"rendered":"BS ISO 23400:2021"},"content":{"rendered":"

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[<\/sup> 2<\/sup><\/span>],[<\/sup> 3<\/sup><\/span>],[<\/sup> 4<\/sup><\/span>],[<\/sup> 5<\/sup><\/span>],[<\/sup> 6<\/sup><\/span>],[<\/sup> 7<\/sup><\/span>],[<\/sup> 8<\/sup><\/span>]<\/sup>.<\/p>\n

This document does not apply to organic soils, soils with permafrost, wetland soils, or to soil layers prone to submergence below the groundwater table.<\/p>\n

\n
\n NOTE 1\n <\/div>\n

The possibility of increasing soil C storage is viewed as a means to sequester atmospheric carbon dioxide (CO 2<\/sub>) 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. N 2<\/sub>O emissions, NO 3<\/sub>– 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.<\/p>\n<\/div>\n

\n
\n NOTE 2\n <\/div>\n

While understanding changes in soil inorganic carbon it is important also to understand the land-atmosphere exchange of CO 2<\/sub>, measuring stocks of soil inorganic carbon is outside the scope of this document.<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
11<\/td>\n4 Principle
5 Procedure
5.1 Site investigation strategy <\/td>\n<\/tr>\n
12<\/td>\n5.2 Sampling
5.2.1 Sampling objectives
5.2.2 Sampling plan <\/td>\n<\/tr>\n
13<\/td>\n5.2.3 Sampling strategy <\/td>\n<\/tr>\n
18<\/td>\n5.2.4 Sample handling, storage and transport in the field
5.2.5 Sample handling and storage in the laboratory <\/td>\n<\/tr>\n
19<\/td>\n5.2.6 Safety
5.2.7 Environmental Protection
5.2.8 Quality assurance during sampling
5.2.9 Sampling report
5.3 Determination of the dry mass and the volume of the soil sampled <\/td>\n<\/tr>\n
20<\/td>\n5.4 Chemical analysis
5.4.1 Sample processing for chemical analysis
5.4.2 Chemical analysis <\/td>\n<\/tr>\n
21<\/td>\n6 Calculations of the organic C and N stocks <\/td>\n<\/tr>\n
22<\/td>\n7 Measuring the temporal variations of soil organic carbon and nitrogen
7.1 General
7.2 Calculation of soil OC stock changes and uncertainties <\/td>\n<\/tr>\n
23<\/td>\n7.3 Possible source of errors
7.4 Information needed
8 Reporting
8.1 Reporting for soil organic carbon and nitrogen stocks <\/td>\n<\/tr>\n
24<\/td>\n8.2 Additional reporting for variation of soil organic carbon and nitrogen stocks <\/td>\n<\/tr>\n
25<\/td>\nAnnex A (informative) Using minimum detectable difference to determine sample size <\/td>\n<\/tr>\n
26<\/td>\nAnnex B (informative) Equivalent soil mass procedure <\/td>\n<\/tr>\n
27<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Guidelines for the determination of organic carbon and nitrogen stocks and their variations in mineral soils at field scale<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2022<\/td>\n30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":394367,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[221,2641],"product_tag":[],"class_list":{"0":"post-394359","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-080-01","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/394359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/394367"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=394359"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=394359"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=394359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}