woodland area
4.The thesis, by the integration of Powerbuilder and Mapinfo, mainly inserts remote sense vector data of crop land,woodland,waters,grassland,barren land,barren land cultivated in FengShou irrigation area and GIS vector data of village and town district division,trench system network,water gate, depth to groundwater table in FengShou irrigation area into client programs programed, realizing the application of remote sense vector data and GIS vector data in water resoures management of FengShou irrigation area in Awati County, realizing the integrated management of the texts and maps of the water resources survey data, and some spatial analysis and map edit functions of MapInfo as well.
7.The results are as follows: in Xinjiang in recent 10 years, the total area of farmlands was obviously enlarged; the total area of steppes was significantly reduced; the urban areas, mining areas and rural residential areas were enlarged; the areas of woodland and water were enlarged to some extent; the areas of some types of unused land were enlarged but others were reduced, in which the area of desertified lands was annually enlarged by 84.5 km^2, its enlargement was reduced by 50% than that during the period from the 1950s to the 1970s, and the ecological environment in some places in Xinjiang has been currently improved.
8.Taking Zhejiang Province as study area,and based on the data of MODIS-EVI,daily mean air temperature and daily precipitation from 52 weather stations,and actual land use in 2001-2004,the time lag cross-correlation analysis was made to relate the seasonal fluctuations of enhanced vegetation index(EVI) of farmland,woodland and garden plot with air temperature and precipitation.
