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2 Key Laboratory of Grassland Ecosystem, Ministry of Education, Lanzhou, Gansu Province 730070, China, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1309565367631052847, articleId=1309565365752004653, tenantId=1146029695717560320, journalId=1308397196074385509, language=CN, title=放牧强度对高寒草甸土壤有机碳及其组分的影响, columnId=1309565024058835950, journalTitle=草地学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=为评估放牧对草地土壤碳库的潜在影响，研究了不同放牧强度对高寒草甸土壤有机碳（Soil organic carbon，SOC）及其组分颗粒有机碳（Particulate organic carbon，POC）、矿物结合有机碳、轻组有机碳、重组有机碳、易氧化有机碳（Easily oxidation organic carbon，EOC）和溶解性有机碳（Dissolved organic carbon，DOC）含量的影响。结果表明：随放牧强度的增大，土壤SOC及其组分含量显著下降（除EOC，DOC外），有机碳库稳定性降低。SOC和POC含量在极度放牧条件下，比轻度放牧分别显著降低了33.54%和56.21%。EOC/SOC，DOC/SOC占比对放牧强度的响应波动较大，可作为评价放牧影响高寒草甸土壤碳库的重要指标。SOC及其组分含量与土壤全氮含量、容重和地上生物量显著相关，其中全氮是影响SOC及其组分含量的关键因子。适宜的放牧强度对维护和提升高寒草甸土壤质量和碳库功能至关重要，过度放牧降低了SOC积累和稳定性，研究为东祁连山高寒草甸放牧和土壤有机碳库管理提供了科学依据。, authors=包志鹏^1,2, 林栋^1,2, 刘雪鹏^1,2, 罗薇薇^1,2, 宋一诺^1,2, 花欣颖^1,2, authorsList=包志鹏, 林栋, 刘雪鹏, 罗薇薇, 宋一诺, 花欣颖, authorCompany=1 甘肃农业大学草业学院, 甘肃 兰州 730070;
2 草业生态系统教育部重点实验室, 甘肃 兰州 730070, correspAuthors=null, authorNote=包志鹏（2000-），男，汉族，安徽池州人，硕士研究生，主要从事草地土壤碳循环研究，E-mail:2571936409@qq.com, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=4Y5BpA0MP8ja0lFcnJenow==, pdfFileSize=1468338, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=国家自然科学基金项目 (32260354); 兰州市青年科技人才创新项目 (2023-QN-46); 甘肃农业大学草学学科草地生态与管理重点团队建设项目 (2500011004); 草业生态系统教育部重点实验室开放课题 (KLGE202209); “揭榜挂帅”项目 (KLGE-2024-01))}, authors=null, keywords=[Keyword(id=1309570822860267753, tenantId=1146029695717560320, journalId=1308397196074385509, articleId=1309565365752004653, language=CN, orderNo=1, keyword=放牧强度), Keyword(id=1309570822935765226, tenantId=1146029695717560320, journalId=1308397196074385509, 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