caa a22 4500 445300884 CHVBK 20180317142557.0 cr unu---uuuuu 170323e20100501xx s 000 0 eng 10.1007/s11430-010-0003-5 doi (NATIONALLICENCE)springer-10.1007/s11430-010-0003-5 The fluxes and controlling factors of N2O and CH4 emissions from freshwater marsh in Northeast China [Elektronische Daten] [JunBao Yu, JingShuang Liu, ZhiGao Sun, WeiDong Sun, JinDa Wang, GuoPing Wang, XiaoBing Chen] Nitrous oxide (N2O) and methane (CH4) emissions were measured using a static chamber method in two adjacent plots of freshwater marsh predominated by Calamagrostis angustifolia, one is seasonal waterlogged (SW) and the other without surface water accumulation (NW), in Sanjiang Plain wetland (47°35'N, 133°31'E), northeast China, during 2002-2004. The diurnal and seasonal flux variations of both gases were significantly correlated with 5-cm-soil temperature. The NW marsh is a source of N2O and sink of CH4, while the SW marsh is sink of N2O and source of CH4. Remarkably, we observed a N2O emission peak under Eh of −300 to −100 mV, and CH4 emission peak under Eh of +300 to +400 mV, which indicate additional sources of N2O and CH4 for the freeze-thaw induced emission peaks of N2O and CH4 observed between late July and early August. Further study shows that the additional N2O and CH4 were emitted under the frozen soil after thawing. Science China Press and Springer-Verlag Berlin Heidelberg, 2010 freeze-thaw region nationallicence freshwater marsh nationallicence methane nationallicence nitrous oxide nationallicence controlling factors nationallicence Yu JunBao Key Lab of Coastal Envionment Processed, Yantai Institute of Coastal Zone Research for Sustainable Development, Chinese Academy of Sciences, 264003, Yantai, China aut Liu JingShuang Key Lab of Wetland Ecology and Environment, Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012, Changchun, China aut Sun ZhiGao Key Lab of Coastal Envionment Processed, Yantai Institute of Coastal Zone Research for Sustainable Development, Chinese Academy of Sciences, 264003, Yantai, China aut Sun WeiDong Key Laboratory of Isotope Geochronology and Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut Wang JinDa Key Lab of Wetland Ecology and Environment, Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012, Changchun, China aut Wang GuoPing Key Lab of Wetland Ecology and Environment, Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012, Changchun, China aut Chen XiaoBing Key Lab of Coastal Envionment Processed, Yantai Institute of Coastal Zone Research for Sustainable Development, Chinese Academy of Sciences, 264003, Yantai, China aut Science China Earth Sciences SP Science China Press 53/5(2010-05-01), 700-709 1674-7313 53:5<700 2010 53 11430 https://doi.org/10.1007/s11430-010-0003-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-010-0003-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yu JunBao Key Lab of Coastal Envionment Processed, Yantai Institute of Coastal Zone Research for Sustainable Development, Chinese Academy of Sciences, 264003, Yantai, China aut NATIONALLICENCE 700 1- Liu JingShuang Key Lab of Wetland Ecology and Environment, Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012, Changchun, China aut NATIONALLICENCE 700 1- Sun ZhiGao Key Lab of Coastal Envionment Processed, Yantai Institute of Coastal Zone Research for Sustainable Development, Chinese Academy of Sciences, 264003, Yantai, China aut NATIONALLICENCE 700 1- Sun WeiDong Key Laboratory of Isotope Geochronology and Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 700 1- Wang JinDa Key Lab of Wetland Ecology and Environment, Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012, Changchun, China aut NATIONALLICENCE 700 1- Wang GuoPing Key Lab of Wetland Ecology and Environment, Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012, Changchun, China aut NATIONALLICENCE 700 1- Chen XiaoBing Key Lab of Coastal Envionment Processed, Yantai Institute of Coastal Zone Research for Sustainable Development, Chinese Academy of Sciences, 264003, Yantai, China aut NATIONALLICENCE 773 0- Science China Earth Sciences SP Science China Press 53/5(2010-05-01), 700-709 1674-7313 53:5<700 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer