QIN Siyue,TANG Junhong， PU Jingyun，XU Yue, DONG Pingping，JIAO Liang，GUO Jun
（Material and Environmental Engineering and Sciencecollege, HangzhouDianziUniversity, Hangzhou 310018, China）
Abstract: The study was target on detecting seasonal dynamics of CH4 and CO2 fluxes and their potential impact factorsto Hangzhou Xixi Wetland, China. Content of TOC, humidity, porosity, specific gravity, pH, and Eh of soil samples were also detected. Results show that the fluxes of CH4 emissions varies from -0.0019~0.0353mg/(m2·h); the fluxes of CO2 emissions varies from -0.0019~0.0353mg/(m2·h). The seasonal vibration of CH4 fluxes is according the order of summer> autumn>spring>winter; and the seasonal vibration of CO2 fluxes is as the order of summer>spring> winter>autumn. There is an extraordinary positively relationship between the flux of CH4 and CO2 emissions. Soil moisture is an important factor affecting the CH4 flux, and CH4 fluxes increase with increasing moisture. Vascular plants play a more important role in the consumption of CH4, during the growing stage. The difference of soil in Xixi Wetland lead to the large difference of the CH4 flux, specifically in content of TOC, which has significant positive relationship with the CH4 emissions.
Keywords: Hangzhou Xixi Wetland; the flux of CH4/CO2; seasonal dynamics; impact factor
EARTH AND ENVIRONMENT Vol.44, No.5 Tot No.313, 2016, Page 513-519
