中文摘要：

利用新疆艾比湖湿地国家级自然保护区通量塔2012年观测数据，比较了流域内荒漠区湿地地表典型日、季节尺度上的能量收支特征，揭示辐射通量、潜热通量、感热通量以及土壤热通量的变化规律、不同季节的能量闭合程度和能量残余累积特征。结果表明： 艾比湖流域干旱荒漠区湿地四季典型日能量平衡各分量均表现为昼高夜低、正午高凌晨低的单峰曲线，春季感热通量为主要耗能方式，夏、秋、冬季潜热大于感热；年尺度上潜热通量整体呈春夏增长、秋冬降低，夏季波动较大的趋势，水分是决定感热和潜热通量配比的关键因子；荒漠区湿地地表能量残余量每日变化特征具有显著的时段性，春、夏、秋、冬日平均能量残余量分别为17.77、4.19、171.99和-12.81 W·m^-2，而季节尺度上能量残余量排序为：冬季〈春季〈夏季〈秋季；相比于干旱区其他下垫面类型，荒漠区湿地潜热通量在能量支出中均占比较高（生长季，LE/Rn=0.803；全年，LE/Rn=0.698），同时其波文比小于干旱区平均水平。

英文摘要：

Based on the eddy covariance （EC） flux tower observation data drawn from the Ebinur Lake Wetland National Nature Reserve in Xinjiang from January to December of 2012, the diurnal seasonal characteristics of surface energy balance for desert wetland in the basin were compared. We analyzed variations in radiation, latent heat flux, sensible heat flux and soil heat flux and energy closure degree and residual energy accumulation characteristics for different seasons. The results showed that typical diurnal energy balance components for four seasons were high during the daytime, low at night, high at noon and low in the early morning, revealing a unimodal curve for the wetland of arid desert region in the Ebinur Lake Basin. Sensible heat flux was the main energyconsuming mechanism in the spring, while latent heat was higher than sensible heat in the summer, autumn and winter. As a whole, on a yearly scale, latent heat flux increased in spring and summer, declined in autumn and winter, and fluctuated considerably in summer. Moisture was a key factor affecting the ratio of sensible heat to latent heat flux. Diurnal variations in wetland surface residual energy in the desert area occurred over a long time period. Average diurnal residual energy levels for the four seasons were recorded as 17.77, 4.19, 171.99 and -12.81 W·m^-2, with the order of seasonal residual energy levels recorded as follows： winter 〈 spring 〈 summer 〈 autumn. Compared to different underlying surfaces in arid area, the latent heat flux of wetland in desert area showed a higher proportion of energy expenditure （growing season, LE/Rn=0.803; entire year, LE/Rn=0.698）, and the Bowen ratio was lower than the average level for arid area.