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Replication Data for Soil thickness controls the ratio distribution of evapotranspiration to precipitation in karst watershed in southwest China

Harvard Dataverse (Africa Rice Center, Bioversity International, CCAFS, CIAT, IFPRI, IRRI and WorldFish)

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Title Replication Data for Soil thickness controls the ratio distribution of evapotranspiration to precipitation in karst watershed in southwest China
 
Identifier https://doi.org/10.7910/DVN/ORGFUW
 
Creator Zhang, rongfei
 
Publisher Harvard Dataverse
 
Description ET processes have been widely assessed through in-situ measuring and modelling methods. However, it is challenging to measure actual ET and upscale it to regional level for karst landscapes. In this study, five plots were built to observe actual ET based on Thermal Dissipation Probes (TDP), re-designed Ventilated-chamber and in-site Micro-lysimeters in a karst watershed in southwest China. Then, three models (Penman-Monteith-Leurning, PML; Remote Sensing-Priestley and Taylor, RS-PT; and Hargreaves) were constructed to upscale ET estimation to the regional level based on Landsat-8 images and MODIS data. The results showed that: 1) The PML model performed better than other models with higher R2 values and smaller RMSE values; 2) Soil thickness exhibited obvious positive control effect (R2 = 0.54) with yearly ET; 3) Ground temperature had a negative correlation with ET. This study is helpful to improve the accuracy of measured and upscaling estimated ET to the regional level.
 
Subject Earth and Environmental Sciences
Eco-hydrology
Landscape ecology
 
Contributor Zhang, rongfei