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海岸带盐沼是全球生物地球化学循环的重要的一环,对全球气候变化也产生深远影响.2013年7月(生长季)和2013年12月(非生长季)在中国江苏省盐城海岸带盐沼湿地采用静态箱技术原位测定DMS的通量.结果表明,盐城海岸带盐沼湿地整体上表现为DMS的源.植被带及光滩上,互花米草带具有最高的DMS排放率38.06±8.97mg·m-2·d-1;距离潮沟远近上,潮沟内DMS通量0.35±0.11mg· m-2·d-1远小于近潮沟10.30±5.09mg·m-2·d-1与远潮沟9.57士4.04 mg·m-2·d-1DMS通量;非生长季DMS通量14.31±5.80mg· m-2·d-1高于生长季的DMS通量5.56±2.63 mg·m-2·d-1.地上植被及其残留根系、潮水的周期性变化均影响DMS的通量大小.“,”The costal zone salt marsh is one of the most significant parts of the global biogeoche-mical cycles,and has a profound impact on global change.The fluxes of dimethyl sulfide (DMS) were seasonally measured using chambers over an annual cycle in July 2013(growing season) and in December 2013(non-growing season) in Jiangsu salt marsh wetlands.The results show that cos-tal zone salt marsh wetlands was regarded as a source for DMS.In vegetation zone and bare flat,the maximum occurring at cordgrass(Spartina alterniflora) were 38.06±8.97mg · m-2 · d-1.In the distance from the tidal creek,the fluxes of DMS were 0.35±0.11m · g · m-2 · d-1 in the tidal creek lower than it were 10.30±5.09mg m-2 · d-1 in the recent tidal creek and it were 9.57±-4.04 mg · m-2 · d-1 far away from the tidal creek.The fluxes of DMS in non-growing season were 14.31±5.80mg · m-2 · d-1 higher than it were 5.56±2.63 mg · m-2 · d-1 in growing season.The temporal and spatial variation of DMS was influenced by the aboveground vegetation,the rhizosphere of the aboveground and the periodic variation of the tides can also have an effect on DMS fluxes.