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当前位置: 首页 > 文章 > 基于MOD16产品的黑河流域蒸散量时空分布特征 节水灌溉 2019 (9) 85-92
Position: Home > Articles > Temporal and Spatial Distribution Characteristics of Evapotranspiration in the Heihe River Basin Based on MOD16 Product Water Saving Irrigation 2019 (9) 85-92

基于MOD16产品的黑河流域蒸散量时空分布特征

作  者：
闫宇会;薛宝林;张路方;李占杰
单  位：
北京师范大学水科学研究院
关键词：
MOD16;实际蒸散发;潜在蒸散发;黑河流域;时空分布特征
摘  要：
基于全球蒸散产品MOD16数据,以黑河流域为研究对象,通过趋势分析法,研究了2001-2017年黑河流域地表的实际蒸散发(AET)和潜在蒸散发(PET)的年际和年内时空变化规律。结果表明:①黑河流域多年平均AET、PET具有明显的空间分布特征,多年平均AET值的空间取值范围为79.88～509.22 mm,多年平均PET值的空间取值范围为338.55～1 876.75 mm。②研究对不同土地利用类型进行了分析,对于多年平均AET,林地最大,其次为草地、耕地、城镇用地,未利用土地最小;对于多年平均PET,未利用土地最大,其次为城镇用地、耕地、草地,林地最小。③在年尺度上,黑河流域多年AET、PET年际波动变化不大,AET波动范围为222.08～352.11 mm,多年平均AET值为292.01 mm,PET波动范围为1 084.61～1 206.69 mm,多年平均PET值为1 146.56 mm;在月尺度上,黑河流域AET、PET年内分布处于先增大后减少的单峰型变化趋势,峰值均处于7月,5-7月都是AET与PET差值较大的月份;在季尺度上,夏季是AET与PET差值最大的季节,春季其次,证明流域夏季最为干旱缺水,具有春旱的气候特点。
译  名：
Temporal and Spatial Distribution Characteristics of Evapotranspiration in the Heihe River Basin Based on MOD16 Product
作  者：
YAN Yu-hui;XUE Bao-lin;ZHANG Lu-fang;LI Zhan-jie;College of Water Sciences, Beijing Normal University;Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology;
关键词：
MOD16;;actual evapotranspiration;;potential evapotranspiration;;Heihe River basin;;temporal and spatial distribution characteristics
摘  要：
Based on the MOD16 data of global evapotranspiration products, the Heihe River Basin was used as the research object. Through the trend analysis method, the interannual and intra-annual spatial and temporal variations of the actual evapotranspiration(AET) and potential evapotranspiration(PET) on the surface of the Heihe River Basin from 2001 to 2017 were studied. The results show that: ① The average annual AET and PET of the Heihe River Basin have obvious spatial distribution characteristics. The spatial average range of the average AET value is 79.88～509.22 mm, and the spatial value range of the average annual PET value is 338.55～1 876.75 mm. ②This study analyzes different land use types. For the multi-year average AET, the forest land is the largest, followed by grassland, cultivated land, and urban land, and the unused land is the smallest; for the multi-year average PET, the unused land is the largest, followed by the town Land, cultivated land, grassland, and forest land are the smallest. ③ On the annual scale, the interannual fluctuations of AET and PET in the Heihe River Basin have not changed much. The AET fluctuation range is 222.08～352.11 mm, the average annual AET value is 292.01 mm, the PET fluctuation range is 1 084.61～1 206.69 mm, and the average annual PET value is 1 146.56 mm. On the monthly scale, the distribution of AET and PET in the Heihe River Basin is increasing first and then decreasing. The peak value is in July, and the difference between AET and PET in May, June and July is on a seasonal scale, summer is the season with the largest difference between AET and PET, followed by spring, which proves that the basin is the most arid and water-deficient in summer, with the characteristics of spring drought.

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