{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T14:23:52Z","timestamp":1787149432167,"version":"build-2736575974"},"reference-count":34,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T00:00:00Z","timestamp":1787097600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["41771200"],"award-info":[{"award-number":["41771200"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"award":["41771200"],"award-info":[{"award-number":["41771200"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Liaoning Science and Technology Public Welfare Research Fund","award":["2022JH4\/10100053"],"award-info":[{"award-number":["2022JH4\/10100053"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Wetland degradation alters soil nutrient cycling and microbial functioning, yet how microorganisms adjust resource-use strategies after wetland conversion remains poorly understood. This study examined the effects of wetland degradation-induced land-use conversion on soil-microbial quotients (qMBC, qMBN, qMBP) and soil-microbial stoichiometric imbalance (C:Nimb, C:Pimb, N:Pimb) in the A\u2019er Xiang lake marsh wetland, northeastern China. Five sites were compared: native wetland, 5- and 10-year forestland converted from wetland, and 5- and 10-year cropland converted from wetland. The qMBP increased from 11.15% in native wetland to 30.40% in 10-year cropland, while qMBC rose from 5.97% to 9.81%, indicating that microbial P and C quotients were highly sensitive to wetland conversion. C:Nimb increased to 2.93 in 10-year cropland, whereas N:Pimb rose from 4.93 in native wetland to 13.79 and 10.59 in 5-year and 10-year forestland, respectively. Correlation analysis demonstrated that soil, microbial, and enzyme stoichiometry jointly regulated microbial quotients. Specifically, C:Nimb was strongly and negatively correlated with N:Pimb (r = \u22120.839, p &lt; 0.01), and microbial biomass showed contrasting responses, being positively correlated with C:Nimb but negatively correlated with C:Pimb and N:Pimb. These indicators can guide future land-use decisions by integrating water availability with microbial adaptation in degraded sandy wetland regions.<\/jats:p>","DOI":"10.3390\/microorganisms14081844","type":"journal-article","created":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T13:14:01Z","timestamp":1787145241000},"page":"1844","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Microbial Quotients and Stoichiometric Imbalance Reflect Divergent Responses to Wetland Land-Use Conversion"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-4699-0421","authenticated-orcid":false,"given":"Zehao","family":"Wang","sequence":"first","affiliation":[{"name":"Key Lab of Eco-Restoration of Regional Contaminated Environment, Ministry of Education, Shenyang University, Shenyang 110044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3019-7743","authenticated-orcid":false,"given":"Ye","family":"Li","sequence":"additional","affiliation":[{"name":"Key Lab of Eco-Restoration of Regional Contaminated Environment, Ministry of Education, Shenyang University, Shenyang 110044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-6941-8122","authenticated-orcid":false,"given":"Jiuwang","family":"Jin","sequence":"additional","affiliation":[{"name":"Key Lab of Eco-Restoration of Regional Contaminated Environment, Ministry of Education, Shenyang University, Shenyang 110044, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"175734","DOI":"10.1016\/j.scitotenv.2024.175734","article-title":"Microbiology of wetlands and the carbon cycle in coastal wetland mediated by microorganisms","volume":"954","author":"Mustafa","year":"2024","journal-title":"Sci. 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