River evolution at margins of the Tibetan Plateau may provide valuable information for understanding climatic change and tectonic movement of the past. Here we focus on the Huangshui River,a tributary of the Yellow Ri...River evolution at margins of the Tibetan Plateau may provide valuable information for understanding climatic change and tectonic movement of the past. Here we focus on the Huangshui River,a tributary of the Yellow River,crossing a series of tectonically subsided and uplifted areas that show diversity patterns of terrace formation.The distribution of fluvial terrace is studied by mapping and dating.Three terraces in Haiyan basin,four terraces in Huangyuan basin,19 terraces in Xi’ning basin,nine terraces in Ping’an basin,five terraces in Ledu basin and 12 terraces in Minhe basin are recognized.Magne-展开更多
The Merguellil catchment is a typical Mediterranean semi-arid basin which undergoes regular water shortage aggravated by current drought.During the last decades the continuous construction of small and large dams with...The Merguellil catchment is a typical Mediterranean semi-arid basin which undergoes regular water shortage aggravated by current drought.During the last decades the continuous construction of small and large dams within the watershed has altered its natural hydrologic regime.The work presented here attempts to simulate the actual water and nutrient balance using the Soil and Water Assessment Tool(SWAT)model. Two alternatives scenarios were further generated in order to improve the availability of water in terms of quantity and quality.The first one regards the removal of ponds and reservoirs from the upstream area.展开更多
The examination of macroelements and natural radionuclides in the bottom sediments of small lakes and soils in the catchment areas of the Baikal region allows for the study of the mechanism of inflow and the source of...The examination of macroelements and natural radionuclides in the bottom sediments of small lakes and soils in the catchment areas of the Baikal region allows for the study of the mechanism of inflow and the source of these materials.On the basis of the results of rentgenostructural analysis lake sediments are divided into four types:terrigenous,carbonate, terrigenous-carbonate and organogenic.Through the analysis of gamma-ray spectrometry and ato-展开更多
The Soil Conservation Monitorins Information System (SCMIS) presented in this paper is oriented to soil erosion control, resources exploitation, utilization, planning and management for a small watershed (about 10 sq....The Soil Conservation Monitorins Information System (SCMIS) presented in this paper is oriented to soil erosion control, resources exploitation, utilization, planning and management for a small watershed (about 10 sq. km.) on the Loess Plateau. It sums up Remote sensing (RS), Geographical Information System (GIS) and Expert System (ES) and consists of a integrated system. As a basic level information system of Loess Plateau, its perfection and psreading will bring about a great advance in resources exploitation and management of Loess Plateau.展开更多
文摘River evolution at margins of the Tibetan Plateau may provide valuable information for understanding climatic change and tectonic movement of the past. Here we focus on the Huangshui River,a tributary of the Yellow River,crossing a series of tectonically subsided and uplifted areas that show diversity patterns of terrace formation.The distribution of fluvial terrace is studied by mapping and dating.Three terraces in Haiyan basin,four terraces in Huangyuan basin,19 terraces in Xi’ning basin,nine terraces in Ping’an basin,five terraces in Ledu basin and 12 terraces in Minhe basin are recognized.Magne-
文摘The Merguellil catchment is a typical Mediterranean semi-arid basin which undergoes regular water shortage aggravated by current drought.During the last decades the continuous construction of small and large dams within the watershed has altered its natural hydrologic regime.The work presented here attempts to simulate the actual water and nutrient balance using the Soil and Water Assessment Tool(SWAT)model. Two alternatives scenarios were further generated in order to improve the availability of water in terms of quantity and quality.The first one regards the removal of ponds and reservoirs from the upstream area.
文摘The examination of macroelements and natural radionuclides in the bottom sediments of small lakes and soils in the catchment areas of the Baikal region allows for the study of the mechanism of inflow and the source of these materials.On the basis of the results of rentgenostructural analysis lake sediments are divided into four types:terrigenous,carbonate, terrigenous-carbonate and organogenic.Through the analysis of gamma-ray spectrometry and ato-
文摘The Soil Conservation Monitorins Information System (SCMIS) presented in this paper is oriented to soil erosion control, resources exploitation, utilization, planning and management for a small watershed (about 10 sq. km.) on the Loess Plateau. It sums up Remote sensing (RS), Geographical Information System (GIS) and Expert System (ES) and consists of a integrated system. As a basic level information system of Loess Plateau, its perfection and psreading will bring about a great advance in resources exploitation and management of Loess Plateau.
