Three-Dimensional Modeling for Digital Watershed on the Loess Plateau
نویسندگان
چکیده
Two methods of grid based and image based modeling were put forward respectively to represent the landform of watersheds on the Loess Plateau, China. Many kinds of spatial data such as Digital Elevation Model (DEM), Remote Sensing (RS) images, and photos are utilized to establish the digital 3-D terrains of watersheds on the Loess Plateau, which provides 3-D virtual geographic environments for supporting regional planning, conservation of water and soil, ecological environment construction. With regard to the specific landscape of terraces, a new approach to model 3-D digital terrace is designed and implemented by analyzing Grid DEM and RS image.
منابع مشابه
Evaluation of the Mike She Model for Application in the Loess Plateau, China
Quantifying the hydrologic responses to land use ⁄ land cover change and climate variability is essential for integrated sustainable watershed management in water limited regions such as the Loess Plateau in Northwestern China where an adaptive watershed management approach is being implemented. Traditional empirical modeling approach to quantifying the accumulated hydrologic effects of watersh...
متن کاملAgrifood Research Reports 68, p. 85-94
The Loess Plateau is well known for its deep loess deposits and serious soil erosion. This paper analyses the characteristic of soil erosion on the Plateau and reviews the small watershed management and ecosystem rehabilitation practice and development in the future. In the last 30 years, the government has paid great attention on the integrated small watershed management and restoration of the...
متن کاملLong-term Streamflow Response to Climatic Variability in the Loess Plateau, China
The Loess Plateau region in northwestern China has experienced severe water resource shortages due to the combined impacts of climate and land use changes and water resource exploitation during the past decades. This study was designed to examine the impacts of climatic variability on streamflow characteristics of a 12-km watershed near Tianshui City, Gansu Province in northwestern China. Stati...
متن کاملDistribution map of the different lithologic units in loess plateau of eastern Golestan by using remote sensing technique; Aghband research area
Introduction: Along with the climate, Soil is an essential natural resource. Although soil studies in Iran have been started more than 50 years ago, the soil map of the country has not been fully prepared yet, and only 20-25% of the lands have been mapped already. Many soil maps of Iran need to be updated, but the common methods in soil mapping are costly and time-consuming. Hence, using data o...
متن کاملRainfall Characteristics of the Liudaogou Catchment on the Northern Loess Plateau of China
The objectives of this study were to understand the rainfall characteristics of thewind-water erosion crisscross region on the northern Loess Plateau, China, to provide basisfor the studies on mitigation of soil erosion, estimation on surface water resources andlocal hydrological circle, etc. The Liudaogou Catchment with representative climatic andhydrologic conditions of wind-water erosion cri...
متن کامل