Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要:
Herein, methane (CH4), carbon dioxide (CO2) and nitrous oxide (N2O) emission from different aged barn feeding Tibetan sheep were characterized using a respiration chamber in combination with gas chromatograph method in cold season of 2013. This work was based on measuring the increase of gas concentration inside respiration chamber by the means of gas chromatograph. Results indicated that diurnal CH4emission patterns for barn feeding Tibetan sheep were driven by feeding schedule, diurnal CO2emission patterns were relatively stable with two slight emission peaks, diurnal N2O emission patterns were driven by the variation of temperature inside chamber. Diurnal CH4emission rates were 17.65, 19.49 and 21.06�g sheep−1d−1for yearling, two-year and three-year barn feeding Tibetan sheep, account for 6.15%, 5.76% and 5.45% of their daily gross energy intakes, respectively. Diurnal CO2emission rates were 526.88, 588.43 and 640.66�g sheep−1d−1for yearling, two-year and three-year barn feeding Tibetan sheep, respectively. Diurnal N2O emission rates were 1.64, 1.25 and 1.05�mg sheep−1d−1for yearling, two-year and three-year barn feeding Tibetan sheep, respectively. Three-year barn feeding Tibetan sheep released more CO2-eq on per unit BW and BW0.75gain basis. � 2017 Elsevier Ltd
Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai, China; Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining, Qinghai, China; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Xu T,, Zhao N,, Hu L,et al. Characterizing CH4, CO2and N2O emission from barn feeding Tibetan sheep in Tibetan alpine pastoral area in cold season[J]. Atmospheric Environment,2017-01-01,157