نتایج جستجو برای: universal soil loss equation
تعداد نتایج: 939866 فیلتر نتایج به سال:
Abstract Context Olive groves are key features of Iberian Mediterranean landscapes. With the intensification olive grove production, some negative environmental impacts on soils must be considered to achieve farm sustainability. Objectives To estimate, theoretically and empirically, soil erosion in Alentejo (Portugal) considering different planting densities managements (i.e. conventional, inte...
One of the main factors of water erosion is the natural characteristics of the soil called "erodibility" or"detachability". The present study aims to analyze the variations of soil erodibility factor in different plains and thefactors related to it. Erodibility is one the key factors in some models of erosion and sediment such as Universal SoilLoss Equation (USLE), Revised USLE (RUSLE), and Mod...
As one of the most important causes water quality deterioration, NPS (non-point source) pollution has become an urgent environmental and livelihood issue. To date, there have been only a few studies focusing on conforming to estimation, sources are mainly concentrated in nitrogen phosphorus nutrients. Unlike that consider intensity loads, risk for China’s Fuxian Lake Basin was evaluated this st...
Soil erosion is a global problem that negatively affects the quality of environment, availability natural resources, as well safety inhabitants. threatens functioning urban areas, which was reason for choosing territory Master Plan Belgrade (Serbia) research area. The calculation soil loss analyzed using G2 model. model belongs to group empirical models and based on synthesis equation from Revi...
As one of the key tools for regulating human-ecosystem relations, environmental conservation policies can promote ecological rehabilitation across a variety of spatiotemporal scales. However, quantifying the ecological effects of such policies at the regional level is difficult. A case study was conducted at the regional level in the ecologically vulnerable region of the Loess Plateau, China, t...
The ongoing diversification of agricultural lands in Hawaii to replace sugarcane and pineapple plantations is a major challenge. It presents an interesting case study for global concerns with land degradation-land use interaction. The important question posed by this paper is: will “diversified” crops have a different impact on the natural resource base and environmental quality from earlier cr...
The assessment of sustainability in cropping system is an important issue for natural resources management and environmental protection. Incorporating the geographical information system (GIS) and remote sensing (RS) technologies, an initial idea of the crop sustainability assessing system was thus proposed, based on ecosystem services value (ESV) assessing criterions. The system is basically c...
Purpose Excess phosphorus from fertilizer application and mobilised soil phosphorus from erosion are partially lost to the aquatic environment where they might cause eutrophication. Phosphorus emissions vary spatially and it is the goal of this study to broaden the scope of the existing inventory to the global scale and to increase the spatial resolution by accounting for relevant environmental...
Waduk Cengklik adalah waduk yang terletak di Desa Ngargorejo, Kecamatan Ngemplak, Kabupaten Boyolali, Provinsi Jawa Tengah. sendiri memiliki fungsi utama sebagai pemasok air irigasi pada 3 kecamatan yaitu Sambi, dan Nogosari. Oleh karena setiap tahunnya cengklik mengalami penurunan tampungan menyebabkan kurangnya pasokan ke pertanian terutama saat musim kemarau. Hal ini disebabkan oleh besarnya...
Accurate predictions of sediment yield from distributed models of runoff and sediment yield depends in part of how well matched the model structure is to input data spatial representation. This study investigated how model structure and input data representation affect sediment predictions made using the Soil and Water Assessment Tool (SWAT). The study focused on the integration of two specific...
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