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Using the data on land use and land cover change (LUCC) compiled from Landsat images of 1987 and 2002 and field survey in the arid inland river basin, water resource changes induced by land use were studied. The results reveal that significant changes in land use occur within the whole basin over the study period and cause such decline of groundwater table and degeneration of surface water and groundwater...
The following topics are dealt with: cartography; map generalization; data models; representation and visualization of geospatial data; data acquisition and processing; remotely sensed data; information extraction; satellite positioning technology and location based service; Web GIS; spatial decision support systems; soil moisture; forests and vegetation; wetlands and inland waters; agroecosystems;...
Land cover dynamic has to be taken into account to analyze changes in water resources, especially in vulnerable environment such as the Bani catchment in Mali. To study the land cover changes, we used NDVI AVHRR time series (1982-2006, 8 km spatial resolution), and monthly rainfall data from 65 stations. To interpret the NDVI trends in terms of land cover changes, we had to eliminate the inter-annual...
The Laohahe river with a catchment area of 18, 599 km2 located in a semiarid region was selected as a case study to investigate the impacts of land use change on water resources. Land cover maps of 1979, 1989 and 1999 respectively interpreted from remotely sensed images were used to analyze land use change during the last decades. Observed precipitation and discharge data were collected for a period...
Quantifying the effects of land cover change is imperative to improve future hydrological budget estimates within large river basins or catchments. However especially in Africa, rigorous, regional standardized and spatially explicit land cover change data is missing, or often inconsistent and outdated. Within the GLOWA Volta hydrological project in West Africa, we used 26 Landsat tiles from the years...
The oasis vegetation evapotranspiration (ET) is a sensitive factor for the arid land surface water-heat exchange caused by land cover changes, which is very important on the feedback between terrestrial ecosystems and climate change. Evapotranspiration in Keriya Oasis of the Tarim Basin was calculated and spatially exhibited in this study by integrating remote sensing data into the Surface Energy...
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