Abstract
In this paper, we introduce an outline of our investigations of remote sensing which have been carried out recently in our department, some of which will be published soon. We treat two subjects as follows :
1) To clarify relationship between forest distribution and its controlling factors such as cumulative air-temperature, landform characteristics and snow cover duration using remote sensing images, DEMS (DTM) and climatological data. A technical problem to be solved was elimination of shadow in the imageries of mounstanous region by high precision DEMS.
2) To reveal time-series change of hydrologic environment in developing satellite city areas. The changes of the albedo and the expansion of impermeable surfaces, which are very important factors to control hydrologic cycle, were traced from multitemporal satellite imageries which were taken during past some ten years. Landsat imageries were overlaied with topographic maps and landuse maps to get hydrological parameters of varius ground surfaces of different land cover and different topographic conditions.
