189广西重点研发计划项目(2021AB28001)资助收稿日期:2022–03–02;修回日期:2022–03–23北京大学学报(自然科学版)第59卷第2期2023年3月ActaScientiarumNaturaliumUniversitatisPekinensis,Vol.59,No.2(Mar.2023)doi:10.13209/j.0479-8023.2022.110广西岩溶碳汇对气候变化和石漠化治理措施的响应汤颖颖吴秀芹†北京林业大学水土保持学院,北京100083;†通信作者,E-mail:wuxq@bjfu.edu.cn摘要为探讨气候变化和石漠化治理工程背景下岩溶碳汇的变化趋势和响应机制,基于广西岩性地质数据和气象数据,利用模型估算2005—2020年间广西岩溶碳汇的时空格局,并分析气候变化和石漠化治理对岩溶碳汇的影响。结果表明,广西2005—2020年岩溶碳汇时空差异显著,呈现波动上升的趋势,年均增加8.1%;降水对岩溶碳汇变化的影响最显著,温度和蒸散发量的影响较小;岩溶碳汇对不同石漠化治理措施的响应有所不同,封山管护这种最普遍的石漠化治理措施对固碳增汇的促进作用最显著,年均增长贡献率约为28%。关键词岩溶;碳汇;气候变化;石漠化治理ResponseofKarstCarbonSinktoClimateChangeandRockyDesertificationControlMeasuresinGuangxiZhuangAutonomousRegionTANGYingying,WUXiuqin†SchoolofSoilandWaterConservation,BeijingForestryUniversity,Beijing100083;†Correspondingauthor,E-mail:wuxq@bjfu.edu.cnAbstractInordertoexplorethechangingtrendandresponsemechanismofkarstcarbonsinksunderthebackgroundofclimatechangeandrockydesertificationcontrolengineering,thispaperestimatesthetemporalandspatialpatternofkarstcarbonsinksinGuangxifrom2005to2020basedonGuangxilithologicgeologicaldataandmeteorologicaldata,andfurtherTheeffectsofclimatechangeandrockydesertificationcontrolonkarstcarbonsinksareanalyzed.Theresultsshowthatfrom2005to2020,thetemporalandspatialdifferencesofkarstcarbonsinksinGuangxiaresignificant,showingatrendofstablefluctuationandrisingwithanaverageannualincreaseof8.1%.Precipitationhasthemostsignificantimpactonthechangesofkarstcarbonsinkswhiletemperatureandevapotranspirationhavelittleeffect.Theresponsestothecontrolmeasuresaredifferent.Asthemostcommoncontrolmeasuresforrockydesertification,closingthemountainformanagementandprotectionhasthemostsignificantroleinpromotingcarbonsequestrationa...
