Investigation of land cover change areas in north and central Asia-Development of land cover ground truth database of North and Central Asia for monitoring by satellite data-

本研究项目的主要目的是建立西伯利亚、蒙古、中国西部和中部地区的土地覆盖地面实况数据库，利用卫星数据对土地覆盖现状和1981年以来的土地覆盖变化进行监测，取得了以下成果：1.编制了全球土地覆盖制图的土地覆盖基准图例，建立了土地覆盖地面实况数据库; 2.建立了土地覆盖地面实况数据质量评价方法。Asia2.to follows.1.to利用NOAA/AVHRR数据分析了1981年以来全球陆地覆盖制图的发展趋势和未来的发展方向。5.利用卫星数据和实地考察数据identified.4.land调查。

The objectives of this research project are as follows.1.to develop land cover ground truth database of Siberia, Mongolia, West China, and Central Asia2.to map and detect the present land cover and the land cover change since 1981 using satellite data.The following achievements were obtained through this research project.1.Land cover guideline legend was developed for global land cover mapping and the land cover ground truth database was developed.2.Method to evaluate the quality of land cover ground truth data was developed. By the developed method, inappropriate ground truth data can be removed.3.Trend of global land cover mapping was investigated and future directions were identified.4.land cover change of continental scale was analyzed using NOAA/AVHRR data since 1981.5.Land cover of south Baikal and Inner Mongolia were investigated by satellite data and ground truth data based on expeditions.