نتایج جستجو برای: in the universal soil loss equation usle
تعداد نتایج: 21291602 فیلتر نتایج به سال:
a novel ultra wideband microstrip bandpass filter using radial stub loaded resonator and interdigital coupled lines is presented in this paper. the radial stub loaded resonator and decagonal patch form a resonator named m to create tuneable multiple notches in the passband for suppression wlan interference. to realize sharp roll-off, two adjustable transmission nulls are located at the lower an...
abstract nowadays, industries cannot play a crucial role in national and international competitions. the tourism industry is no exception. tourism industry development as the most important economic sector and income generation is one of the key challenges of economic development in the world. therefore, countries were successful that take advantage of the capabilities of tourism sector using ...
drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...
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...
risk assessment of soil erosion, one of the most important land degradation problems worldwide, is very essential for land and water resources management, and development of soil conservation methods. in the present study, the temporal changes of soil erosion risk were assessed from 1987 to 2010, based on the revised universal soil loss equation (rusle) using remote sensing (rs) and geographic ...
Um problema comum a muitos municípios brasileiros é presença de erosão do solo, o que pode levar perdas materiais e até vidas. O principal fator interveniente nesse fenômeno maior ou menor resistência solo ação das águas resulta na erodibilidade, definido como um atributo representa sua vulnerabilidade à remoção partículas. Vários modelos matemáticos têm sido elaborados desenvolvidos para estim...
Runoff from agricultural fields during the nongrowing season is a significant factor leading to phosphorous loading and diminishing water quality in Lake Simcoe, Ontario. Cover crops offer potential alleviate loss by minimizing soil erosional processes uptaking excess phosphorous; however, recent research suggests that its adoption remains relatively low. More concern lies with lack of cover cr...
the soil erodibility factor varies spatially according to variations of some soil properties on the surface. this study was carried out to compare spatial variability of the soil erodibility factor as estimated and measured using the usle. the study was conducted in an agricultural zone with an area of in 900 km2 in hashtrood, northwestern iran. in the study area, 36 square grids with a dimensi...
Erosion is a serious problem in watershed management. The Saba water catchment area at the Titab Dam Buleleng Regency, Bali Province. existence of accompanied by development activities surrounding community, both tourism, economic and daily activities. Unfortunately, this activity future will have negative impact on condition dam so that it poses risk. This study aims to determine amount sedime...
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