نتایج جستجو برای: watershed basin
تعداد نتایج: 71397 فیلتر نتایج به سال:
Abstract. This study aims to analyze the area and distribution of land cover in last 10 years Krueng Aceh evaluate alignment between regional spatial plan (RTRW) watershed. The results analysis were obtained through digital image processing derived from Landsat 7 ETM 2009 8 OLI 2020. shows that form primary forest has changed 2020, wherein had an 60,245.62 ha or 34.11% entire while 2020 it was ...
Small sediment dams are the key structures for controlling sediment flow and improving the course of waterways in watersheds. In Kermanshah province, the efficiency of these structures in sediment accumulation has been less studied and evaluated. This study aimed to investigate the efficiency of these structures in sediment retention and flood control in three watersheds of the province. For th...
Implementing watershed management without considering all aspects may lead to instability, exacerbating unfavorable conditions. Adopting an integrated management approach is necessary for any watershed system. An important consideration in decision making and planning process is to quantify ecological impacts of management using landscape ecology framework. In this regard, uncertainty quantific...
Application geographic information systems (GISs) and remote sensing integration to provide determination of runoff from watershed has performed increasingly attention in recent years. In this study, Natural Resources Conservation Service Curve Number (NRCS-CN) method was used to estimate Curve number according to the factors of hydrological soil group, land use, land treatment, drainage basin ...
[1] Topographically convex regions within a catchment basin represent varied degrees of hill-slopes. The nonnetwork space (M), the characterization of which we address in this letter, is akin to the space that is achieved by subtracting channelized portions contributed due to concave regions from the watershed space (X). This nonnetwork space is similar to non-channelized convex region within a...
Storm water detention has been widely used for on-site runoff release control. The required storm water detention volumes are often determined by the pre-selected release rates for various design events. When a low release rate is selected, the basin stores more storm water volume than required and it results in an insufficient base flow for the downstream habitats. When a high release is selec...
The relevance of the boundary concept to ecological processes has been recently questioned. Humans in the post-industrial era have created novel lateral transport fluxes that have not been sufficiently considered in watershed studies. We describe patterns of land-use change within the Potomac River basin and demonstrate how these changes have blurred traditional ecosystem boundaries by increasi...
We present ‘bAd Calculator’, a new software developed in Visual Basic programme which can be applied for analyses of various drainage basin parameters, directional aspects, etc. The graphical user interface of bAd Calculator can be used for several applications such as determination of bearing and azimuth of linear features and their representation in rose diagram. Various drainage basin parame...
The amounts and types of extractable hydrocarbon components in sediment cores from the Rochester Basin of eastern Lake Ontario provide a record of environmental changes that have accompanied the settlement and population growth of the surrounding land areas. Sediments deposited prior to the mid-1800s contain low concentrations of hydrocarbons that are dominated by land-plant wax components. Con...
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