Dynamics Change of Water Surface Area and Its Driving Force Analysis for Honghu Lake in Recent 40 Years Based on Remote Sensing Technique

In this paper, the dynamic change of water surface area in Honghu Lake in recent 40 years based on remote sensing technique is introduced by using the multi-temporal remote sensing imagery including Landsat MSS, TM, ETM and HJ-1 CCD since 1970s. Meanwhile, the daily precipitation and evaporation data of Honghu meteorological station and the fishery production value of Jingzhou since 1970s were also collected to analyze the influence of climate change and human activities factors on the change of Honghu Lake's water surface area. The multiple regression analysis shows the influence coefficients of precipitation, precipitation days, evaporation and fishery production value for the water surface area of Honghu Lake are 0.7575", "-0.0035", "-0.0952 and -0.4761 respectively, which means climate factor is still the major factor on the change of Honghu Lake, while human activity should not be ignored.