Retrieval evapotranspiration and land surface temperature in response to land use/cover change based on remote sensing data

A major motivation of this research is to investigate the variety of land surface temperature(LST) and evapotranspiration(ET) in response to land use/cover change(LUCC), and water resource consumption was further discussed. First, Landsat TM/ETM+ data were carried out for LUCC detection for Kenli county of Shandong Province, and its impact on land surface temperature(LST) and evapotranspiration(ET) in the region was assessed. Herein LST and ET were retrieved by Qin mono-window algorithm and SEBAL model, respectively. The results revealed that the land use/cover change was remarkable during 13 years from 1987 to 2000 in the Kenli county due to accelerated economic growth. The change area achieves 36.12% of the total area. The land use/cover characteristics mainly controlled the spatial distribution of the LST and ET, with the low LST and high ET in beach, bottomland, swamp and water areas, in contrast to high LST and low ET in constructed land and salted land. The distributions of LST and ET were all a single-apex model over different land uses/covers. The frequency distribution characteristic of LST in 2000 was roughly consistent with those in 1987, but the change ranges of LST over different land use/cover in 2000 were large than those in 1987. ET has not presented the same change characteristic, but the daily ET values in 2000 over different land use/cover were larger than those in 1987. Meanwhile, the results demonstrate that ET possessed evidently negative correlation with the LST for all land cover types.