文献类型：期刊文献

英文题名：Mangrove vegetation enhances soil carbon storage primarily through in situ inputs rather than increasing allochthonous sediments

作者：Xiong, Yanmei[1] Liao, Baowen[1] Wang, Faming[2]

第一作者：熊燕梅

通信作者：Xiong, Yanmei

机构：[1] Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, 510520, China; [2] Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China

年份：2018

卷号：131

起止页码：378-385

外文期刊名：Marine Pollution Bulletin

收录：EI(收录号：20181905144934);Scopus(收录号：2-s2.0-85046349216)

语种：英文

外文关键词：Isotopes - Wetlands - Vegetation

摘要：The role of soil carbon (C) in coastal wetlands as a net sink is related to the relative abundance of autochthonous versus allochthonous C. We aimed to investigate soil C sources and the pathways by which mangrove vegetation enhances soil C accumulation. We sampled soil to 1 m depth in seven oceanic mangrove forests and an adjacent un-vegetated mudflat at Dongzhai Bay, China. Stable C isotope technique was used to separate autochthonous and allochthonous C sources. Autochthonous C accounted for 27–97% of soil C stock in the top meter. Soil C density was 1.1–3.6 times higher in mangroves than in the mudflat. Among the increased soil C in mangroves relative to mudflat, autochthonous C accounted for 65–100% of the increments. The results suggest that mangrove vegetation enhances soil C storage primarily through in situ inputs, therefore the substantial soil C stocks commonly found in mangroves play an important role in sequestering atmospheric CO2. ? 2018 Elsevier Ltd