CAJ | 학술논문

为研究东北地区灌溉型水库的甲烷排放特征及其影响因子，试验采用静态浮箱法于2008年测定了泥河水库水-气界面的甲烷通量。结果发现，泥河水库的甲烷排放通量范围0.34～19.13 mg·m-2·h-1，平均6.56 mg·m-2·h-1。甲烷排放通量存在明显的季节变化，夏季＞秋季＞春季；甲烷排放通量未表现出空间差异。相关性分析表明，甲烷通量分别与水温、叶绿素和总氮呈显著正相关关系；与溶氧和水深为显著负相关关系。该研究建议在评估水库温室气体排放时，应充分考虑灌溉型水库的甲烷排放。
위연구동북지구관개형수고적갑완배방특정급기영향인자，시험채용정태부상법우2008년측정료니하수고수-기계면적갑완통량。결과발현，니하수고적갑완배방통량범위0.34～19.13 mg·m-2·h-1，평균6.56 mg·m-2·h-1。갑완배방통량존재명현적계절변화，하계＞추계＞춘계；갑완배방통량미표현출공간차이。상관성분석표명，갑완통량분별여수온、협록소화총담정현저정상관관계；여용양화수심위현저부상관관계。해연구건의재평고수고온실기체배방시，응충분고필관개형수고적갑완배방。
In order to study methane emission characteristics and influencing factors of irrigation reservoirs in northeast China,static floating chamber method was used to measure methane flux across water-air interface in Nihe reservoir in 2008.The results indicated that methane emission flux ranged from 0.34 to 19.13 mg·m-2·h-1,with the average flux of 6.56 mg·m-2·h-1.There were significantly seasonal differences of methane flux,summer >autumn >spring;there were no spatial differences of methane flux.Correlation analysis showed that methane flux was positively related with water temperature,chlorophyll and total nitrogen;negatively related with dissolved oxygen and water depth.The study suggests that methane emissions of irrigation reservoirs should be considered to accurately estimate greenhouse gases emissions in reservoirs.