文献类型：期刊文献

英文题名：Emission of Greenhouse Gases (CH4 and CO2) into the Atmosphere from Restored Mangrove Soil in South China

作者：Xu, Yaowen[1] Liao, Baowen[1] Jiang, Zhongmao[1] Xin, Kun[1] Xiong, Yanmei[1] Guan, Wei[1]

第一作者：Xu, Yaowen

通信作者：Liao, BW[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Key Lab State Forestry Adm Trop Forestry, Guangzhou 510520, Peoples R China

年份：2021

卷号：37

期号：1

起止页码：52-58

外文期刊名：JOURNAL OF COASTAL RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000607009800004)】；

基金：This work was supported by the National Natural Science Foundation of China (grant numbers: 41876094, 41676080).

语种：英文

外文关键词：Flux; soil characteristics

摘要：Mangroves are a special ecosystem in tropical and subtropical coastal areas. Currently, it is not adequately understood whether soils in restored mangroves are a substantial source of greenhouse gases. The objectives of this study were to determine whether restored mangrove soils are a substantial source of carbon dioxide (CO2) and methane (CH4) and to identify environmental factors affecting soil CO2 and CH4 fluxes in mangrove sites. From August 2019 to January 2020, CO2 and CH4 flux surveys were conducted in soils at four planted mangrove sites, dominated by Excoecaria agallocha, Kandelia obovata, Bruguiera gymnorrhiza, and Hymenocallis littoralis, respectively, in a mangrove reserve in southern China. The results showed that the CO2 and CH4 flux ranges of the four mangrove sites were 0.9432-1.7892 mmol m(-2) h(-1) and -0.104 to 0.845 lmol m(-2) h(-1), respectively. Soil CO2 flux was strongly positively (p < 0.01) correlated with soil organic carbon content and positively correlated (p < 0.05) with soil total N content, temperature, and redox potential. CH4 flux was positively correlated with soil temperature. The results confirm that these restored mangrove soils are only a small greenhouse gases source to the atmosphere.