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当前位置: 首页 > 文章 > 下垫面特征变化对于旱区蒸散发的影响 节水灌溉 2020 (7) 59-62
Position: Home > Articles > Influences of Land Use and Cover Change on Evapotranspiration of Dry Area Water Saving Irrigation 2020 (7) 59-62

下垫面特征变化对于旱区蒸散发的影响

作  者：
童山琳;崔晨风;伍妮;王艳娟
单  位：
河海大学水文水资源学院;武汉大学动力与机械学院;旱区农业水土工程教育部重点实验室
关键词：
蒸散发;土地利用和变化;旱区;黄土高原
摘  要：
下垫面土地利用类型及其变化对蒸散发(ET)的影响机制是一个重要课题,对旱区农业发展具有十分重要的意义。随着气候变化和人类活动范围扩张,中国旱区黄土高原的下垫面土地利用类型发生了巨大的改变,区域蒸发能力发生显著变化。结合卫星遥感数据和地面观测数据,基于Penman-Monteith-Leuning蒸散发反演模型,收集2010-2015年旱区内98个站点的土地利用类型数据,对区域ET值变化特征进行定量研究。分析不同下垫面土地利用类型的蒸发能力变化特征,重点观察水田、旱地、草地转变为城市的过程对蒸散发的影响。发现旱地城镇化过程显著增加了区域蒸散发能力,ET变化幅度为0.044 9 mm/a。草地城镇化削弱了区域蒸发能力,ET变化幅度为-0.024 8 mm/a。水田城镇化过程中,区域蒸发能力没有明显变化。
译  名：
Influences of Land Use and Cover Change on Evapotranspiration of Dry Area
作  者：
TONG Shan-lin;CUI Chen-feng;WU Ni;WANG Yan-juan;School of Hydrology and Water Resources, Hohai University;Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A & F University;School of Power and Mechanical Engineering, Wuhan University;
关键词：
evapotranspiration;;land use and cover change;;dry area;;Loess Plateau
摘  要：
The influences of land use and cover change on evapotranspiration(ET) is an important topic, which is of great significance to the agricultural development in arid areas. With the climate change and the expansion of human activities, the land use types of the underlying surface of the Loess Plateau in the arid region of China have been changing dramatically. The regional evaporation capacity changes significantly. Based on Penman-Monteith-Leung retrieval model, this study collected 98 stations of different land use types in the dry area from 2010 to 2015 from satellite remote sensing data and ground data to quantitatively study the change characteristics of regional ET values. The change characteristics of ET value of land use types on different underlying surfaces were analyzed, and the influences of transformation from paddy field, dry land and grassland to city on evapotranspiration were mainly observed. The results show that the urbanization of dryland significantly increases the regional evapotranspiration, and the change range of ET is 0.0449 mm/year. The urbanization of grassland weakens the regional evapotranspiration capacity, and the change rate of ET is-0.0248 mm/year. During the process of paddy field urbanization, there is no obvious fluctuation in regional ET.

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