基于通量塔的广西白骨壤群落虫害影响固碳监测  

Monitoring of Carbon Sequestration Affected by Pests in Avicennia marina Community in Guangxi Based on Flux Tower

作　　者：孙明 谢敏[2] 陈燕丽 莫伟华 潘良浩 Sun Ming;Xie Min;Chen Yanli;Mo Weihua;Pan Lianghao(Guangxi Institute of Meteorological Sciences,Nanning,Guangxi 530022,China;Climate Center of Guangxi,Nanning,Guangxi 530022,China;Guangxi Academy of Marine Sciences,Guangxi Mangrove Research Center,Beihai,Guangxi 536000,China)

机构地区：[1]广西壮族自治区气象科学研究所,广西南宁530022 [2]广西壮族自治区气候中心,广西南宁530022 [3]广西海洋科学院(广西红树林研究中心),广西北海536000

出　　处：《广西林业科学》2024年第5期585-593,共9页Guangxi Forestry Science

基　　金：广西自然科学基金项目(2022GXNSFBA035586);中国气象局创新发展专项(CXFZ2023J075);广西气象科研计划项目(桂气科2022Z04);北海国家气候观象台开放实验室-专项课题项目(BNCO-S202302)。

摘　　要：虫害是影响红树林生长的重要生物因子。为深入了解虫害对红树林固碳的影响,以广西北海市典型白骨壤(Avicen⁃nia marina)群落为研究对象,采用涡度相关技术,分析虫害对白骨壤群落净生态系统碳交换量(NEE)的影响。结果表明,受虫害影响,研究区白骨壤群落全年物候曲线呈“双峰一谷”变化特征,夏季为NEE累积最低时段。4—8月为白骨壤群落虫害爆发主要时段;受虫害影响后,白骨壤群落的生态恢复仅需1~2个月,说明白骨壤群落对虫害的自我修复和调整能力较强。2019—2022年,白骨壤群落NEE年累积量分别为-3.92×10^(2)、-4.03×10^(2)、-4.02×10^(2)和-4.61×10^(2) gC/m2,NEE呈缓慢上升趋势;受虫害影响,白骨壤群落NEE年累积损失率均值为22.08%。虫害对白骨壤群落NEE具有明显影响,应加大虫害防治力度,有效降低虫害带来的负面影响,更好地发挥红树林的固碳功能。Pests are significant biological factors affecting growths of mangroves.In order to gain deeper insights for impacts of pests on carbon sequestrations of mangroves,typical Avicennia marina community in Beihai,Guangxi was chosen as research object and eddy covariance technology was used to analyze impacts of pests on net ecosystem exchange(NEE)of A.marina community.Results showed that annual phenological curve of A.marina community in study area exhibited"double-peak,one-valley"characteristic because of pests,with summer being the weakest period for NEE accumulation.Main period of pest outbreak in A.marina community was from April to August.Ecological recovery of A.marina community was only 1-2 months after affecting by pests,which indicated that A.marina community had strong self-repair and adjustment capabilities for pests.From 2019 to 2022,annual NEE accumulations of A.marina community were-3.92×10^(2),-4.03×10^(2),-4.02×10^(2) and-4.61×10^(2) gC/m2 respectively,showing slow increasing trend.Due to pest impacts,mean of annual accumulative NEE loss rates of A.marina community was approximately 22.08%.Pests had obvious impacts on NEE of A.marina community,and pest control should be strengthened to effectively reduce negative impacts of pests and enhance carbon sequestration functions of mangroves.

关 键 词：虫害 净生态系统碳交换 广西 白骨壤 

分 类 号：X835[环境科学与工程—环境工程]