caa a22 4500 445299878 CHVBK 20180317142554.0 cr unu---uuuuu 170323e20100701xx s 000 0 eng 10.1007/s11430-010-3082-4 doi (NATIONALLICENCE)springer-10.1007/s11430-010-3082-4 CH4 uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia, China [Elektronische Daten] [YuanBo Geng, GuangQiang Luo, GuoFu Yuan] The influence of near ground atmosphere CH4 concentration, soil water content, soil Eh, plants, soil temperature, and pH on CH4 uptake flux of Leymus chinensis steppe during rapid growth season was studied using field in-situ measurement in Xilin River basin of Inner Mongolia, China. The results showed that CH4 uptake flux was positively correlated with near ground atmosphere CH4 concentration and soil Eh but negatively correlated with soil water content. Precipitation may decrease the CH4 flux by increasing the soil water content. The average fluxes of three treatments during the observation period were 1.52 (natural conditions, 1.51 (aboveground plants were excluded), and 2.00 mg m−2 d−1 (all plants were removed), respectively. The difference between the CH4 flux of natural condition treatment and that of removing aboveground plants treatment is small, whereas the flux of removing all plants treatment is larger than the other two treatments. This means that the contribution of aboveground plants to CH4 uptake flux is smaller than that of roots or roots-removing process. CH4 uptake flux is not sensitive to soil temperature and the narrow-ranged soil pH (6.36-7.86). The Leymus chinensis steppe acts as a sink for CH4, and thus more studies should be focused on its affecting factors and related mechanisms. Science China Press and Springer-Verlag Berlin Heidelberg, 2010 CH4 uptake flux nationallicence Leymus chinensis steppe nationallicence affecting factors nationallicence static opaque chamber/gas chromatography method nationallicence Geng YuanBo Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101, Beijing, China aut Luo GuangQiang Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101, Beijing, China aut Yuan GuoFu Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101, Beijing, China aut Science China Earth Sciences SP Science China Press 53/7(2010-07-01), 977-983 1674-7313 53:7<977 2010 53 11430 https://doi.org/10.1007/s11430-010-3082-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-010-3082-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Geng YuanBo Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101, Beijing, China aut NATIONALLICENCE 700 1- Luo GuangQiang Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101, Beijing, China aut NATIONALLICENCE 700 1- Yuan GuoFu Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101, Beijing, China aut NATIONALLICENCE 773 0- Science China Earth Sciences SP Science China Press 53/7(2010-07-01), 977-983 1674-7313 53:7<977 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer