scholarly journals MODELLING OF SOIL EROSION PROCESSES AND RUNOFF FOR SUSTAINABLE WATERSHED MANAGEMENT: CASE STUDY OUED EL ABID WATERSHED, MOROCCO

2019 ◽  
Vol 65 (4) ◽  
Author(s):  
Sabri EL MOUATASSIME ◽  
Ahmed BOUKDIR ◽  
Ismail KARAOUI ◽  
Goran SKATARIC ◽  
Marina NACKA ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Watershed Management ◽  
Erosion Processes ◽  
Management Case Study

Dynamics of Soil Erosion as Influenced by Watershed Management Practices: A Case Study of the Agula Watershed in the Semi-Arid Highlands of Northern Ethiopia

2016 ◽  
Vol 58 (5) ◽  
pp. 889-905 ◽  
Author(s):  
Ayele Almaw Fenta ◽  
Hiroshi Yasuda ◽  
Katsuyuki Shimizu ◽  
Nigussie Haregeweyn ◽  
Aklilu Negussie
Keyword(s):  
Soil Erosion ◽  
Watershed Management ◽  
Management Practices ◽  
Northern Ethiopia ◽  
Semi Arid

scholarly journals RECONSTRUCTING THE LANDSCAPE OF THE PAST IN THE AGRICULTURAL TERRACES OF THE CITY OF AVDAT

2019 ◽  
Vol XLII-2/W15 ◽  
pp. 117-124
Author(s):  
R. Arav ◽  
S. Filin ◽  
Y. Avni
Keyword(s):  
Soil Erosion ◽  
World Heritage ◽  
Arid Environments ◽  
Agricultural Terraces ◽  
Change Mechanism ◽  
Erosion Processes ◽  
Anthropogenic Intervention ◽  
The City

<p><strong>Abstract.</strong> Large areas in the arid Southern Levant are dotted with ancient agricultural terraces and runoff harvesting installations. In the Negev Highlands, Israel, they were constructed in the 3rd&amp;ndash;4th centuries CE, maintained for 6&amp;ndash;7 centuries, and then abandoned after the 10th century. Their design pattern and foundations provide a rare insight to the prevailing environmental conditions during the middle Holocene, while their 600&amp;ndash;700 years cultivation tells the story of their maitainance and desert agriculture in these regions. From their abandonment onwards, they documented more than 1000 years of land degradation and soil erosion till present time. In this paper, we follow a complete cycle of desert agriculture of two sites near the UNESCO world-heritage town of Avdat. We reconstruct the landscape at the period pre-dating the first anthropogenic intervention, through the centuries of cultivation, and into a millennium of abandonment until the present erosion phase. We use high-resolution 3-D data to document the erosion and environmental dynamics during these two millennia, and to compute rates of siltation and erosion. Long-term measures of such kind are unique, as it is rare to find a millennium-scale documentation of soil erosion processes. Their study improves our understanding of the long-term environmental change mechanism acting in arid environments. The detailed analysis of these installations also offers insights into methods for soil conservation, for sustainable desert inhabitation, and for strategies to protect world-heritage installations. As the globe-wide struggle to combat soil erosion becomes urgent, this case study becomes even more relevant.</p>

scholarly journals Interpretation of soil erosion in a Polish loess area using OSL, 137Cs, 210Pbex, dendrochronology and micromorphology – case study: Biedrzykowice site (s Poland)

2019 ◽  
Vol 46 (1) ◽  
pp. 57-78 ◽  
Author(s):  
Grzegorz Poręba ◽  
Zbigniew Śnieszko ◽  
Piotr Moska ◽  
Przemysław Mroczek ◽  
Ireneusz Malik
Keyword(s):  
World War Ii ◽  
Soil Erosion ◽  
Middle Ages ◽  
Agricultural Field ◽  
World War ◽  
Field Range ◽  
Loess Area ◽  
Erosion Processes ◽  
The Mean

Abstract Loess areas used for agriculture are susceptible to soil erosion. The intensive process of soil erosion in Polish loess areas began with the onset of the Neolithic and has continued intermittently until today. This work presents the results of soil erosion from simultaneous use of the 137Cs and 210Pbex methods on an agricultural field located on loess slope. Moreover, to establish the age of accumulated sediment connected with water slope erosion, OSL dating, selected physicochemical and micromorphological analyses were applied. The reference values of the 137Cs and 210Pbex fallout for the studied site (Biedrzykowice, the Proszowice Plateau, Małopolska Upland) equal 2627 (45% connected with Chernobyl) and 4835 Bq·m–2, respectively. The results of the 137Cs and 210Pbex inventories measured for the agricultural field range from 730 to 7911 and from 1615 to 11136 Bq·m–2, respectively. The mean soil erosion is about 2.1 kg·m–2·a–1 (about 1.4 mm·a–1). The accumulation of the colluvial sediments started in the Neolithic and drastically increased in the Middle Ages. The examined gully catchment in Biedrzykowice has probably developed quite rapidly as a result of increased erosion. This resulted in the abandonment of this area as farmland and, consequently, in the minimization of water erosion on the slope due to the entrance of woody vegetation in this area. Erosion processes were highly intensified during the last 70 years as a result of deforestation after World War II and intensive agricultural reuse of this area after a break, as indicated by isotope measurements and dendrochronology.

Modeling Soil Erosion Vulnerability Using RUSLE: A Case Study Upstream of Nangal Reservoir, India

2020 ◽  
Vol 4 (1-2) ◽  
pp. 1-11
Author(s):  
Sunil Nehra ◽  
Koyel Sur ◽  
V. K. Verma
Keyword(s):  
Soil Erosion ◽  
Watershed Management ◽  
Management Practice ◽  
Action Plan ◽  
Landsat 8 ◽  
Strong Positive Correlation ◽  
Alos Palsar ◽  
Rusle Model

Simulation of soil erosion is an important phenomenon in watershed management studies because of the dynamic nature of soil. The present study demonstrates the capabilities of remote sensing coupled with GIS to extract soil erosion vulnerabilities using RUSLE model. Therefore this study understands spatial distribution of soil erosion at a macro-watershed scale. The input parameters for RUSLE model include the rainfall and erosivity (R) derived using the TRMM satellite precipitation product for a long term implementing regression model. The soil erodibility (K) factor is estimated using available soil map, and the topographic factor (LS) from 12m ALOS PALSAR DEM. The management practice information was extracted from the land use / cover map based on 30m multi spectral LANDSAT-8 of three season datasets. The RUSLE model predicted very low, low, moderate, high and very high erosion in 84.8%, 7.9%, 4.4%, 2.3% and 0.7% of reviewed area, respectively. The results were validated with ground infromation and NDVI, being the main identifiers of soil erosion. As presence of high vegetation indicates higher strength to hold the soil particles together and prevent soil erosion, correlation coefficient was generated to find accuracy of the results with NDVI of the area. The strong positive correlation (0.5) provided scientific support that prediction of soil erosion by RUSLE can be effectively used for watershed management and combating action plan for soil erosion.

Overcoming limited information through participatory watershed management: Case study in Amhara, Ethiopia

2008 ◽  
Vol 33 (1-2) ◽  
pp. 13-21 ◽  
Author(s):  
Benjamin M. Liu ◽  
Yitayew Abebe ◽  
Oloro V. McHugh ◽  
Amy S. Collick ◽  
Brhane Gebrekidan ◽  
...  
Keyword(s):  
Watershed Management ◽  
Limited Information ◽  
Management Case Study

scholarly journals GEOGRAPHIC INFORMATION SYSTEM : REPRESENTATION OF SPATIAL TECHNOLOGY FOR WATERSHED MANAGEMENT (Case Study : Watershed of Binanga Lumbua In Jeneponto Region South of Sulawesi)

GEOMATIKA ◽  
2017 ◽  
Vol 22 (1) ◽  
pp. 01
Author(s):  
Ismah Pudji Rahayu Ishak ◽  
Andi Idham Asman ◽  
Despry Nur Annisa Ahmad
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Watershed Management ◽  
Geographic Information ◽  
System Representation ◽  
Management Case Study ◽  
Spatial Technology

Permasalahan yang dialami DAS Binanga Lumbua dari hasil observasi singkat sebelumnya mengindikasikan bahwa DAS ini mengalami kekritisan. Hal tersebut terindikasi karena pada saat musim hujan, wilayah ini mengalami banjir akibat luapan dari DAS. Ketika musim kemarau, wilayah ini mengalami kekeringan dan benar-benar tandus. Salah satu hal yang dapat dilakukan dari adanya indikasi kekritisan pada DAS ini adalah dengan tetap menjaga keseimbangan ekosistem di DAS melalui upaya Pengelolaan DAS menggunakan teknologi spasial Sistem Informasi Geografis (SIG). Tujuan penelitian ini diarahkan untuk mengalisis tingkat kekritisan ekosistem lingkungan DAS Binanga Lumbua dan memberikan arahan pemanfaatan ruang untuk mengelolah lingkungan di DAS Binanga Lumbua berdasarkan pada zonasi tingkat kekritisan. Metode analisis yang digunakan adalah teknik analisis overlay dengan mengunakan teknologi spasial GIS. Kekritisan DAS dapat dilihat melalui pendekatan keberadaan air tanah yang berdasarkan pada parameter hidrogeomorfologi dan analisis ini menghasilkan peta tingkat kekritisan DAS. Dari peta tingkat kekritisan DAS inilah yang dijadikan dasar dalam menentukan langkah pengelolaan apa yang akan dilakukan di area DAS Binanga Lumbua ini. Diharapkan pula, penelitian ini bisa dijadikan sebagai langkah awal wilayah ini dalam mengatasi permasalahan lingkungan pada daerah aliran sungai setempat.

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