Sediment carbon and nutrient fluxes from cleared and intact temperate mangrove ecosystems and adjacent sandflats
Sediment carbon and nutrient fluxes from cleared and intact temperate mangrove ecosystems and adjacent sandflats
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DOI：
10.1016/j.scitotenv.2017.05.139
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发表时间：
2017-12-01
影响因子：
9.8
通讯作者：
Lundquist, Carolyn J.
中科院分区：
文献类型：
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作者：
Bulmer, Richard H.;Schwendenmann, Luitgard;Lundquist, Carolyn J.
红树林生态系统的丧失与对沿海和河口功能的许多影响有关，包括沉积物碳和养分循环。在这项研究中，我们比较了在原位通量的二氧化碳（CO2）从沉积物到大气中，溶解无机营养盐和氧气的通量通过沉积物-水界面，在完整的和清除红树林和沙滩生态系统在温带河口。分别在夏季和冬季的红树林清除后20个月和25个月进行了测量，在红树林清除后20个月和25个月，清除后的沉积物CO2排放量是未清除的红树林生态系统的2倍以上。较高的CO2排放量从清除现场的增加，死根材料呼吸沿着与沉积物扰动以下红树林清除解释。相比之下，沉积物CO2从沙滩现场流出是微不足道的（
The loss of mangrove ecosystems is associated with numerous impacts on coastal and estuarine function, including sediment carbon and nutrient cycling. In this study we compared in situ fluxes of carbon dioxide (CO2) from the sediment to the atmosphere, and fluxes of dissolved inorganic nutrients and oxygen across the sediment-water interface, in intact and cleared mangrove and sandflat ecosystems in a temperate estuary. Measurements were made 20 and 25 months after mangrove clearance, in summer and winter, respectively.Sediment CO2 efflux was over two-fold higher from cleared than intact mangrove ecosystems at 20 and 25 months after mangrove clearance. The higher CO2 efflux from the cleared site was explained by an increase in respiration of dead root material along with sediment disturbance following mangrove clearance. In contrast, sediment CO2 efflux from the sandflat site was negligible (