Estimation of karst carbon sink in typical karst system in pediment of Taihang Mountain, northern China.

Estimation of karst carbon sink in typical karst system in pediment of Taihang Mountain, northern China. | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Estimation of karst carbon sink in typical karst system in pediment of Taihang Mountain, northern China. Ya Zun Wu, Suya Ren, Yun Lin, Yiyang Wang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4806823/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The increase of global carbon dioxide concentration leads to climate change and accurate estimation of carbon sink fluxes from rock weathering in karst regions is of great significance to the current global carbon cycle and climate change. However, sulfide oxidation in coal-bearing strata in karst areas of northern China forms sulfuric acid that enters the karst groundwater system and participates in the dissolution of carbonate rocks, making carbon sink estimates potentially too high. To accurately estimate carbon sinks, we selected a typical foothill karst system in northern China. The effects of sulfuric acid on carbonate weathering and carbon sink flux were quantitatively evaluated by applying the Galy model and water chemistry methods. Twenty-nine data sets were analyzed for the dry and wet seasons. The results show that the karst groundwater ions in the spring area mainly originated from the weathering and dissolution of carbonate rocks and partly from the weathering and dissolution of silicate rocks. The total HCO 3 - flux in the spring area is 296.49´10 3 mol/km 2 ·a -1 . When only carbonic acid dissolution was considered, the rock dissolution rate was 300.83´10 3 mol/km 2 ·a -1 and the total consumed CO 2 flux was 191.82´10 3 mol/km 2 ·a -1 . When carbonic acid and sulfuric acid were jointly involved, the rock dissolution rate was 364.33´10 3 mol/km 2 ·a -1 and the total consumed CO 2 flux was 162.17´10 3 mol/km 2 ·a -1 . With the participation of sulfuric acid, the rock dissolution rate was elevated by 21.11%, while the consumed CO 2 flux decreased by 15%, and the sink reduction effect of sulfuric acid dissolution on karst carbon sinks was obvious. And the carbon sink rate in wet season more than doubled compared with that in dry season. This study provides a basis for the evaluation of carbon sinks in northern China. carbon sink flux sulfuric acid Galy model karst water Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4806823","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":335675355,"identity":"04824f3a-c3a1-4f26-a2d9-102e8e4ffe87","order_by":0,"name":"Ya Zun Wu","email":"","orcid":"","institution":"Henan Polytechnic University","correspondingAuthor":false,"prefix":"","firstName":"Ya","middleName":"Zun","lastName":"Wu","suffix":""},{"id":335675356,"identity":"bbd531a4-e252-4a70-a64f-546a1afba214","order_by":1,"name":"Suya Ren","email":"","orcid":"","institution":"Henan Polytechnic University","correspondingAuthor":false,"prefix":"","firstName":"Suya","middleName":"","lastName":"Ren","suffix":""},{"id":335675357,"identity":"876e20c1-dff5-4ab5-a2bc-829a026ef36c","order_by":2,"name":"Yun Lin","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAyUlEQVRIiWNgGAWjYDACdgYG5h8VEjz8DIwNRGphBqEzFjKSDSRpYWyrsDE4QKy7DA6zP/5cwCbBY3z+cNuDHwx2crqELDM4zJBgPINHgsfsRmK7YQ9DsrEZIeuAWg4k8EiAtDC2SfAwHEjcRlgLY8MBHgOgw/oPtkn+IU4LM2MzT4IEjwFDYps0UbZIHmZjZpxxQIJH4gZQi4wBEX7hO97++MPHf3X2/P3Hn0m+qbCTI6hFAVWBAQHlICDfQISiUTAKRsEoGOEAAIsxPWZQ0jZJAAAAAElFTkSuQmCC","orcid":"","institution":"Henan Polytechnic University","correspondingAuthor":true,"prefix":"","firstName":"Yun","middleName":"","lastName":"Lin","suffix":""},{"id":335675358,"identity":"dad395bd-c83e-4d53-8633-10e86c7a1da9","order_by":3,"name":"Yiyang Wang","email":"","orcid":"","institution":"Henan Polytechnic University","correspondingAuthor":false,"prefix":"","firstName":"Yiyang","middleName":"","lastName":"Wang","suffix":""}],"badges":[],"createdAt":"2024-07-26 09:07:31","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4806823/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4806823/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":65001348,"identity":"226e233a-8ae5-46c5-84f4-91e971431c46","added_by":"auto","created_at":"2024-09-22 00:46:38","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1133003,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4806823/v1_covered_d16b9f6a-a135-4f6b-bbaf-bdbf87bbcb00.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Estimation of karst carbon sink in typical karst system in pediment of Taihang Mountain, northern China.","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"carbon sink flux, sulfuric acid, Galy model, karst water","lastPublishedDoi":"10.21203/rs.3.rs-4806823/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4806823/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe increase of global carbon dioxide concentration leads to climate change and accurate estimation of carbon sink fluxes from rock weathering in karst regions is of great significance to the current global carbon cycle and climate change. However, sulfide oxidation in coal-bearing strata in karst areas of northern China forms sulfuric acid that enters the karst groundwater system and participates in the dissolution of carbonate rocks, making carbon sink estimates potentially too high. To accurately estimate carbon sinks, we selected a typical foothill karst system in northern China. The effects of sulfuric acid on carbonate weathering and carbon sink flux were quantitatively evaluated by applying the Galy model and water chemistry methods. Twenty-nine data sets were analyzed for the dry and wet seasons. The results show that the karst groundwater ions in the spring area mainly originated from the weathering and dissolution of carbonate rocks and partly from the weathering and dissolution of silicate rocks. The total HCO\u003csub\u003e3\u003c/sub\u003e\u003csup\u003e-\u003c/sup\u003e flux in the spring area is 296.49´10\u003csup\u003e3\u003c/sup\u003emol/km\u003csup\u003e2\u003c/sup\u003e·a\u003csup\u003e-1\u003c/sup\u003e. When only carbonic acid dissolution was considered, the rock dissolution rate was 300.83´10\u003csup\u003e3\u003c/sup\u003emol/km\u003csup\u003e2\u003c/sup\u003e·a\u003csup\u003e-1\u003c/sup\u003e and the total consumed CO\u003csub\u003e2\u003c/sub\u003e flux was 191.82´10\u003csup\u003e3\u003c/sup\u003emol/km\u003csup\u003e2\u003c/sup\u003e·a\u003csup\u003e-1\u003c/sup\u003e. When carbonic acid and sulfuric acid were jointly involved, the rock dissolution rate was 364.33´10\u003csup\u003e3\u003c/sup\u003emol/km\u003csup\u003e2\u003c/sup\u003e·a\u003csup\u003e-1\u003c/sup\u003e and the total consumed CO\u003csub\u003e2\u003c/sub\u003e flux was 162.17´10\u003csup\u003e3\u003c/sup\u003emol/km\u003csup\u003e2\u003c/sup\u003e·a\u003csup\u003e-1\u003c/sup\u003e. With the participation of sulfuric acid, the rock dissolution rate was elevated by 21.11%, while the consumed CO\u003csub\u003e2\u003c/sub\u003e flux decreased by 15%, and the sink reduction effect of sulfuric acid dissolution on karst carbon sinks was obvious. And the carbon sink rate in wet season more than doubled compared with that in dry season. This study provides a basis for the evaluation of carbon sinks in northern China.\u003c/p\u003e","manuscriptTitle":"Estimation of karst carbon sink in typical karst system in pediment of Taihang Mountain, northern China.","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-08-22 12:03:22","doi":"10.21203/rs.3.rs-4806823/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"6a915558-dc39-4a7c-a753-29b8de6c623d","owner":[],"postedDate":"August 22nd, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2024-09-22T00:38:29+00:00","versionOfRecord":[],"versionCreatedAt":"2024-08-22 12:03:22","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4806823","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4806823","identity":"rs-4806823","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}