نتایج جستجو برای: in the universal soil loss equation usle

تعداد نتایج: 21291602  

Journal: :Mathematical and Computer Modelling 2011
Jingcheng Zhang Jihua Wang Xiaohe Gu Juhua Luo Wenjiang Huang Kun Wang

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...

2016
Laura Scherer Stephan Pfister

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1389

this study investigates the strategies native english and persian speakers employ for expressing gratitude in different situations. the strategies of persian efl learners are also compared with english strategies in order to find the differences that may exist between these two languages. social status and size of imposition of the favor are social variables which are investigated in detail for...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه قم 1389

چکیده : آرای صادره از دادگاه ها علاوه بر شیوه های عادی از طریق فوق العاده نیز قابل اعتراض و رسیدگی مجدد هستند. در مواقعی که رای دادگاه مخل به حقوق ثالث باشد وی می تواند به ان اعتراض کند. قلمرو شمول اعتراض ثالث به تصمیمات قضایی که از آن به رای تعبیر شده محدود می گردد. ولی در مورد قرارها که به اعدادی و نهایی تفکیک می شوند، چون هیچ رویه ثابت و مشخصی در این زمینه در دادگاهها وجود نداشته و همچنین ا...

Journal: :Jurnal Penelitian Fisika dan Terapannya (JUPITER) 2022

Penelitian ini dilakukan pada bulan Juli 2017 di sekitar Sub-DAS Batang Limun Kabupaten Sarolangun Provinsi Jambi. bertujuan untuk menghitung laju erosi dan menentukan tingkat bahaya yang terjadi disekitar Sub DAS Limun. Metode digunakan dalam penelitian adalah USLE (Universal Soil Loss Equation) dengan pendekatan Geographic Information System (GIS). Berdasarkan hasil menunjukkan bahwa dari sel...

Journal: :The Science of the total environment 2014
Panos Panagos Katrin Meusburger Cristiano Ballabio Pasqualle Borrelli Christine Alewell

The greatest obstacle to soil erosion modelling at larger spatial scales is the lack of data on soil characteristics. One key parameter for modelling soil erosion is the soil erodibility, expressed as the K-factor in the widely used soil erosion model, the Universal Soil Loss Equation (USLE) and its revised version (RUSLE). The K-factor, which expresses the susceptibility of a soil to erode, is...

Journal: :Land 2021

The P-factor for support practice of the Universal Soil Loss Equation (USLE) accounts soil conservation measures and leads to a significant reduction in modelled loss. However, practical application, is most neglected factor overall due high effort determining or lack input data. This study provides new method automatic derivation main cultivation direction from seed rows tramlines on agricultu...

Journal: :ISPRS international journal of geo-information 2021

In the current study processes of soil deterioration over past five decades was evaluated. Land degradation risk, status, and rate were assessed in Kafr El-Sheikh Governorate, Egypt, 2016 using OLI ETM (2002) remote sensing data, data from 1961.A quantitative produced based on comparative approach integrated weighted sum, overlay, fuzzy model. The parameters used depth, texture, pH, EC, OM, SAR...

Journal: :Dinamika Teknik Sipil 2022

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...

Journal: :Journal of agricultural studies 2022

Water erosion is one of the biggest environmental problems, causing a reduction in agricultural productivity and compromising quality quantity water resources. Therefore, development researches that help planning land use management aiming at sustainable agriculture necessity state Goiás. This work was carried out with objectives analyzing annual distribution rainfall erosivity, determining fac...

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