Methane fluxes from typical marine polyculture ponds of swimming crab with kuruma shrimp and short-necked clam in eastern China
文献类型： 外文期刊
作者： Zhang, Dongxu 1 ; Tian, Xiangli 1 ; Dong, Shuanglin 1 ; Chen, Yan 2 ; Feng, Jie 1 ; He, Rui-Peng 1 ; Zhang, Kai 3 ;
作者机构： 1.Ocean Univ China, Minist Educ, Key Lab Mariculture, Qingdao 266003, Peoples R China
2.Beijing Aquat Prod Technol Promot Dept, Beijing 100029, Peoples R China
3.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Guangzhou 510380, Guangdong, Peoples R China
关键词： Methane fluxes; Temperature; Sediment characteristics; Seawater polyculture systems
期刊名称：AQUACULTURE ENVIRONMENT INTERACTIONS （ 影响因子：3.074； 五年影响因子：3.475 ）
ISSN： 1869-215X
年卷期： 2019 年 11 卷
页码：
收录情况： SCI
摘要： Methane (CH4) fluxes at the water-air interface in 2 typical seawater polyculture systems were determined during the farming season. The mean CH4 fluxes were 66.0 +/- 44.1 mu g m(-2) h(-1) in the bispecies polyculture system of swimming crab Portunus trituberculatus with kuruma shrimp Marsupenaeus japonicus (PM) and 68.7 +/- 39.5 mu g m(-2) h(-1) in the trispecies polyculture system of swimming crab with shrimp and short-necked clam Ruditapes philippinarum (PMR), and no significant differences were observed between them. CH4 emissions showed temporal variability during the farming season, peaking in mid-August. The linear mixed-effect model demonstrated that air temperature was the main regulator of CH4 fluxes rather than the internal physical and chemical properties of the systems. Air, water and sediment temperatures explained 58.9, 61.4 and 55.3% of the CH4 flux variations in the PM and 64.6, 57.1 and 60.8% of the variations in the PMR, respectively. Reducing organic matter accumulation in the sediment by means of im-proving feeding efficiency and the application of integrated aquaculture are likely to be effective in reducing CH4 emissions from aquaculture systems.
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