Hydropower Station Construction and the Land Cover Change - A Case Study in Manwan Hydropower Station

With the aid of the spatial analyzing technology, the land cover data of the research area have been obtained, including before the hydropower station constructing and after construction. Based on the database, the effect of land cover of the hydropower station construction was studied. The results as follows: (1) Dry land, woodland and warm-hot grassy shrubs are the main land use types submerged by the reservoir; (2) Because of the emigrating upward to the middle of the mountain near the reservoir and the infrastructure construction matched, the residential land increasing clearly, but the sum of the farmland decreased in the catchments; (3) The woodland area increased about 85.78km², which benefit by the micro-climate improved and the sophisticated project manage standard; (4)The landscape diversity level was increased in the hydropower station catchments.