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[1]ZHOU Lu,TANG Diwei,LIU Heng,et al.Spatiotemporal Variation of Surface Evapotranspiration of Wuling Mountainous Area and Its Response to Climate Change During 2000—2014[J].Research of Soil and Water Conservation,2022,29(06):206-213.

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Spatiotemporal Variation of Surface Evapotranspiration of Wuling Mountainous Area and Its Response to Climate Change During 2000—2014

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 06 Page number: 206-213 Column: Public date: 2022-10-20

Title:: Spatiotemporal Variation of Surface Evapotranspiration of Wuling Mountainous Area and Its Response to Climate Change During 2000—2014

Author(s):: ZHOU Lu¹, TANG Diwei¹, LIU Heng¹, SONG Eping^1,2, LIU Xiaofang³; (1.College of Forestry and Horticulture, Hubei Minzu University, Enshi, Hubei 445000, China; 2.Western Hubei Ecological Culture Tourism Research Center, Enshi, Hubei 445000, China; 3.Natural Resources and Planning Bureau of Enshi Tujia & Miao Autonomous Prefecture, Enshi, Hubei 445000, China)

Keywords:: evapotranspiration; MOD16; Wuling Mountainous Area; spatiotemporal variation; climate change

CLC:: P426.2

DOI:: -

Abstract:: Evapotranspiration(ET)is a key aspect of the hydrological processes. Assessing the spatiotemporal characteristics of ET and its response to climate change can help to clarify the relationship between regional water resources and climate change. Based on the MOD16 ET dataset and meteorological data, the spatiotemporal variation characteristics of ET and the influence of climate factors on ET in the Wuling Mountainous Area from 2000 to 2014 were discussed by using the methods of Sen trend analysis, Hurst index and correlation analysis. The results showed that:(1)In the Wuling Mountainous Area, ET showed a fluctuating increase in the past 15 years; the monthly difference of ET was obvious, showing a single-peak change trend that first increased and then decreased.(2)The overall ET spatially presents a distribution pattern of high in the middle and low in the surrounding area; ET of different land use types is mainly represented by woodland>grassland>shrub land>cultivated land. The average ET of low mountain was the highest, and the order of the average ET of four seasons was summer>spring >autumn>winter.(3)The spatial variation and trend of ET are in a relatively stable state, and the area of increase and decrease of ET is roughly equal in the future.(4)The order of the effects of meteorological factors on ET was temperature>wind speed>precipitation>solar radiation>humidity, which was positively correlated with temperature, solar radiation and wind speed, but negatively correlated with precipitation and humidity, and air temperature is the main influencing factor. In summary, climate change is a driver of increased ET fluctuations in the Wuling Mountainous Area, but the degree and extent of influence of each factor varies widely.

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Last Update: 2022-10-20