{"id":118091,"date":"2026-09-11T21:18:40","date_gmt":"2026-09-11T19:18:40","guid":{"rendered":"https:\/\/nilu.gnist.dev\/publikasjoner\/negative-correlation-between-soil-salinity-and-soil-organic-carbon-variability\/"},"modified":"2026-09-11T21:18:40","modified_gmt":"2026-09-11T19:18:40","slug":"negative-correlation-between-soil-salinity-and-soil-organic-carbon-variability","status":"publish","type":"nva_publication","link":"https:\/\/nilu.gnist.dev\/en\/publications\/negative-correlation-between-soil-salinity-and-soil-organic-carbon-variability\/","title":{"rendered":"Negative correlation between soil salinity and soil organic carbon variability"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Soil organic carbon (SOC) is vital for terrestrial ecosystems, affecting biogeochemical processes, and soil health. It is known that soil salinity impacts SOC content, yet the specific direction and magnitude of SOC variability in relation to soil salinity remain poorly understood. Analyzing 43,459 mineral soil samples (SOC &lt; 150 g kg\u22121) collected across different land covers since 1992, we approximate a soil salinity increase from 1 to 5 dS m\u22121 in croplands would be associated with a decline in mineral soils SOC from 0.14 g kg\u22121 above the mean predicted SOC (= 18.47 g kg\u22121) to 0.46 g kg\u22121 below (~\u2212430%), while for noncroplands, such decline is sharper, from 0.96 above = 35.96 g kg\u22121 to 4.99 below (~\u2212620%). Although salinity\u2019s significance in explaining SOC variability is minor (&lt;6%), we estimate a one SD increase in salinity of topsoil samples (0 to 7 cm) correlates with respective declines of ~4.4% and ~9.26%, relative to and. The decline in croplands is greatest in vegetation\/cropland mosaics while lands covered with evergreen needle-leaved trees are estimated with the highest decline in noncroplands. We identify soil nitrogen, land cover, and precipitation Seasonality Index as the most significant parameters in explaining the SOC\u2019s variability. The findings provide insights into SOC dynamics under increased soil salinity, improving understanding of SOC stock responses to land degradation and climate warming.\n<\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"_searchwp_excluded":"","_id":"","_status":"PUBLISHED","_sync_date":"2026-09-11 21:13:27","footnotes":""},"nva_tax_category":[1099],"class_list":["post-118091","nva_publication","type-nva_publication","status-publish","hentry","nva_tax_category-scientific-journal-publication"],"acf":[],"_links":{"self":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/118091","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication"}],"about":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/types\/nva_publication"}],"version-history":[{"count":0,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/118091\/revisions"}],"wp:attachment":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/media?parent=118091"}],"wp:term":[{"taxonomy":"nva_tax_category","embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_tax_category?post=118091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}