{"id":2461,"date":"2026-10-02T01:23:00","date_gmt":"2026-10-01T16:23:00","guid":{"rendered":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-10-02-basalt-watershed-weathering-en\/"},"modified":"2026-10-02T01:23:00","modified_gmt":"2026-10-01T16:23:00","slug":"2026-10-02-basalt-watershed-weathering-en","status":"publish","type":"briefing","link":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-10-02-basalt-watershed-weathering-en\/","title":{"rendered":"A basalt-treated watershed changed within weeks, but two-year export was 9.5\u201311% of theoretical potential"},"content":{"rendered":"

2026-10-02 01:23 KST<\/strong><\/p>\n

Spreading crushed basalt on soil produced measurable whole-watershed water-chemistry changes consistent with enhanced weathering.<\/p>\n

Over two years, alkalinity exported by the stream represented 9.5\u201311% of theoretical removal potential, with a stronger signal in summer and autumn than winter and spring.<\/p>\n

How large was the trial<\/h2>\n

Basalt was applied at 20 tonnes per hectare to about 15% of a 59-hectare temperate headwater catchment. Researchers compared alkalinity, silica, lithium and major ions before and after treatment and against a counterfactual estimate.<\/p>\n

What changed within weeks<\/h2>\n

Stream alkalinity rose as much as 557 microequivalents per litre above counterfactual estimates. Element ratios plus silica and lithium chemistry shifted consistently with basalt dissolution, making a purely seasonal explanation less likely.<\/p>\n

\"A
This AI-generated image explains the topic; it is not a photograph of the actual experiment, observation or field site.<\/figcaption><\/figure>\n

How strong was seasonality<\/h2>\n

Enhanced weathering accounted for 7\u201317% of observed alkalinity in successive summers and autumns but less in winter and spring. Temperature affects dissolution, while rain, snow and groundwater control when products reach the stream.<\/p>\n

Can this be counted directly<\/h2>\n

Average export equalled 34.7 tonnes of CO\u2082 per square kilometre per year. Mining, grinding and transport emissions, carbon retained in soil, downstream durability, metals and ecology still require separate accounting. The 9.5\u201311% is not universal efficiency.<\/p>\n

Primary source and independent checks<\/h2>\n

Primary paper: Nature Water \uc6d0 \ub17c\ubb38<\/a><\/p>\n

Institutional or data check: Yale \uc720\uc5ed \uaddc\ubaa8 \ud604\uc7a5\uc2dc\ud5d8 \uc124\uba85<\/a><\/p>\n

Independent or context check: Yale Center for Natural Carbon Capture \uae30\uc220 \uc124\uba85<\/a><\/p>\n

Read in other languages<\/h2>\n

\ud55c\uad6d\uc5b4<\/a> \u00b7 English<\/a> \u00b7 Espa\u00f1ol<\/a> \u00b7 \u65e5\u672c\u8a9e<\/a> \u00b7 Ti\u1ebfng Vi\u1ec7t<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

In a 59-hectare Vermont watershed, crushed-basalt weathering signals reached the stream within weeks and were strongest in summer and autumn. This does not mean all theoretical carbon removal moved quickly.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-2461","briefing","type-briefing","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing\/2461","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing"}],"about":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/types\/briefing"}],"wp:attachment":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=2461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}