FOREST ROADS SYSTEM IN MOUNTAIN RELIEF: INDICATOR EVALUATION OF WATER-EROSION RISK

2017 ◽  
Vol 20 (1) ◽  
Author(s):  
Paweł B. Dąbek ◽  
◽  
Romuald Żmuda ◽  
Tomasz Kowalczyk ◽  
Jolanta Dąbrowska ◽  
...  
Keyword(s):  
Water Erosion ◽  
Forest Roads ◽  
Erosion Risk ◽  
Indicator Evaluation

scholarly journals Analysis of Ownership Data from Consolidated Land Threatened by Water Erosion in the Vlára Basin, Slovakia

2020 ◽  
Vol 13 (1) ◽  
pp. 51
Author(s):  
Alexandra Pagáč Mokrá ◽  
Jakub Pagáč ◽  
Zlatica Muchová ◽  
František Petrovič
Keyword(s):  
Soil Erosion ◽  
Soil Loss ◽  
Agricultural Land ◽  
Water Erosion ◽  
Land Consolidation ◽  
Land Fragmentation ◽  
Erosion Risk ◽  
Definition Of ◽  
The Relationship ◽  
Soil Loss Equation

Water erosion is a phenomenon that significantly damages agricultural land. The current land fragmentation in Slovakia and the complete ambiguity of who owns it leads to a lack of responsibility to care for the land in its current condition, which could affect its sustainability in the future. The reason so much soil has eroded is obvious when looking at current land management, with large fields, a lack of windbreaks between them, and no barriers to prevent soil runoff. Land consolidation might be the solution. This paper seeks to evaluate redistributed land and, based on modeling by the Universal Soil Loss Equation (USLE) method, to assess the degree of soil erosion risk. Ownership data provided information on how many owners and what amount of area to consider, while taking into account new conditions regarding water erosion. The results indicate that 2488 plots of 1607 owners which represent 12% of the model area are still endangered by water erosion, even after the completion of the land consolidation project. The results also presented a way of evaluating the territory and aims to trigger a discussion regarding an unambiguous definition of responsibility in the relationship between owner and user.

Vegetation greening partly offsets the water erosion risk in China from 1999 to 2018

Geoderma ◽  
2021 ◽  
Vol 401 ◽  
pp. 115319
Author(s):  
Han Wang ◽  
Wenwu Zhao ◽  
Changjia Li ◽  
Paulo Pereira
Keyword(s):  
Water Erosion ◽  
Erosion Risk

scholarly journals Evaluation of water erosion risk of Badinska River catchment, Southwest Bulgaria

2017 ◽  
pp. 89-98
Author(s):  
Eli Pavlova-Traykova ◽  
Ivan Marinov ◽  
Petar Dimov
Keyword(s):  
High Water ◽  
Water Erosion ◽  
Main Stream ◽  
River Catchment ◽  
River Watershed ◽  
Erosion Risk ◽  
Actual Risk ◽  
Methodical Approach ◽  
Water Formation

This investigation has been carried out at Badinska River watershed - one of the most famous torrents in Bulgaria. The purpose of the survey is tos analyse the main erosion factors and erosion potential of territories, with a view to assess soil erosion risk and opportunity of high water formation from watershed. A methodical approach for determination and mapping of the territories in terms of the class of erosion risk with the use of GIS is applied. Assessments are made according to the ?Methodology for preparing the national long term programme for protection against erosion and flooding in forestlands?. The total assessment for Badinska river watershed is ?low to moderate? potential risk and ?very low to low? actual erosion risk. About of 5% of the forest stock territory is with ?moderate? and ?moderate to high? actual risk, and the biggest part of this territory (about 63%) is in the main stream watershed above the Yaloviko tributary.

Evaluation of Water Erosion Risk in Tunisian Semi Arid Area

2017 ◽  
pp. 215-249 ◽  
Author(s):  
Olfa Hajji ◽  
Sahar Abidi ◽  
Taoufik Hermassi ◽  
Ikram Mekni
Keyword(s):  
Water Erosion ◽  
Arid Area ◽  
Erosion Risk ◽  
Semi Arid

Does vegetation greening partly offset increasing rainfall pressure? Risk assessment of the water erosion tendency in China over the past 20 years.

2020 ◽  
Author(s):  
Han Wang ◽  
Wenwu Zhao ◽  
Yanxu Liu
Keyword(s):  
Climate Change ◽  
Risk Mitigation ◽  
Regional Climate ◽  
Regional Climate Change ◽  
Water Erosion ◽  
Rainfall Erosivity ◽  
Vegetation Growth ◽  
Erosion Risk ◽  
State Water ◽  
State Area

<p>Soil water erosion is a severe environmental issue which seriously damaging the sustainability of agriculture. Regional climate change could aggravate the threat of erosion, whereas vegetation greening in China (an increasing trend in vegetation cover) could act as a mitigation to the threat. On the basis of the Revised Universal Soil Loss Equation, we proposed a framework for performing an assessment of water erosion risk in China during 1998-2018. A contribution index was constructed to describe the influences of rainfall erosivity and cover management on water erosion risk changes in China during 1998-2018. The research objective was to explore the spatial pattern of water erosion risk change in China in recent decades and to identify the factor that has the largest contribution to the risk change. Results showed that: (a) The area with decreasing water erosion risk in China accounted for 34.97%, and the area with significant decreasing trends accounted for 20.04% of the middle and highly risky state areas. (b) The region that rainfall erosivity contributed more than cover management for absolute value accounted for 76.54%, whereas the contribution of cover management was increasing. (c) Vegetation greening can partly offset the stress caused by climate change. Water erosion risk in China decreased more than increased in risky state area. The pixels with cover management contribute more than rainfall erosivity was concentrated within the area where risk is decreasing, indicating a great contribution of vegetation greening to the risk mitigation. Consequently, enhancing the vegetation growth in the highly risky state water erosion region could reduce the erosion threat in China.</p>

scholarly journals REVIEW AND COMPARISON OF WATER EROSION INTENSITY IN THE WESTERN BALKAN AND EU COUNTRIES

2017 ◽  
Vol 36 (1) ◽  
Author(s):  
Ivan Blinkov
Keyword(s):  
Methodological Approach ◽  
Secondary Data ◽  
Water Erosion ◽  
European Level ◽  
Recent Period ◽  
Erosion Risk ◽  
Balkan Countries ◽  
Gis Environment ◽  
National Databases ◽  
Erosion Intensity

The south and southeast region of Europe is significantly prone to water erosion. In parts of the region, erosion has reached a stage of irreversibility and in some places erosion has practically ceased because there is no soil left. In the recent period several models and approaches in a GIS environment were developed using available database for erosion factors on the European level on which data about water erosion in Western Balkan countries is missing. Sci-entists in the Western Balkan countries faced with the erosion problem for years, developed own models or prepared various erosion risk maps using national databases. The aim of this study is to compare results of water erosion inten-sity in the Western Balkan countries using models on wider level (European maps) and national researches. The basic methodological approach in this paper is an analysis of secondary data, using the method of "content analysis" of various data sources. Inductive and deductive qualitative analyses were used and finally the method of "comparative analysis" is applied, too. Through the analysis of national researches it was estimated that erosion intensity in the WB countries is 656 m3/ha (similar to 6.56 t/ha) and the total amount of annual produced erosive material is 373.8·106 m3. The most erosive countries in Europe are Albania and Montenegro where mean annual intensity of erosion is > 10 t/ha. Macedonia together with Italy, Portugal, Slovenia and Romania is in the second group of countries, where ero-sion intensity is 5–10 t/ha.

scholarly journals Application of The Hierarchical Multicriteria Analysis Method to The Study of Water Erosion (South of Azilal, Morocco)

2021 ◽  
Vol 2 (1) ◽  
pp. 12-22
Author(s):  
Abdelouhed Farah ◽  
Ahmed Algouti ◽  
Abdellah Algouti ◽  
Mohamed Ifkirne
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
High Risk ◽  
Multicriteria Analysis ◽  
Water Erosion ◽  
Soil Conditions ◽  
Analysis Method ◽  
Erosion Risk ◽  
Risk Zones ◽  
Sensitivity Map

This study aims to apply the process of the analytical hierarchy in geographic information system to the study of water erosion in the southern part of the Azilal region, Morocco. This method is an important tool to be used in the planning and management of natural risks; it has allowed us to obtain a multi-factorial sensitivity map to water erosion. This sensitivity map of erosive soil conditions in the study area shows that 6% of the area is (less) exposed to erosion risk while 85% of the mapped area is moderately exposed to erosion risk and only 8% of the mapped area is highly exposed to water weathering factors.  Visually, the high-risk zones correspond to the area around ‘’Oued Lakhdar’’ and its tributaries.

scholarly journals Spatial distribution of water erosion risk in a watershed with eucalyptus and Atlantic Forest

2013 ◽  
Vol 37 (5) ◽  
pp. 427-434 ◽  
Author(s):  
Junior Cesar Avanzi ◽  
Marx Leandro Naves Silva ◽  
Nilton Curi ◽  
Lloyd Darrell Norton ◽  
Samuel Beskow ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Atlantic Forest ◽  
Soil Loss ◽  
Management Practices ◽  
Water Erosion ◽  
Native Forest ◽  
Erosion Risk ◽  
Erosion Rates ◽  
Soil Loss Tolerance ◽  
Loss Tolerance

The process of water erosion occurs in watersheds throughout the world and it is strongly affected by anthropogenic influences. Thus, the knowledge of these processes is extremely necessary for planning of conservation efforts. This study was performed in an experimental forested watershed in order to predict the average potential annual soil loss by water erosion using the Universal Soil Loss Equation (USLE) and a Geographic Information System (GIS), and then compared with soil loss tolerance. All the USLE factors were generated in a distributed approach employing a GIS tool. The layers were multiplied in the GIS framework in order to predict soil erosion rates. Results showed that the average soil loss was 6.2 Mg ha-1 yr-1. Relative to soil loss tolerance, 83% of the area had an erosion rate lesser than the tolerable value. According to soil loss classes, 49% of the watershed had erosion less than 2.5 Mg ha-1 yr-1. However, about 8.7% of the watershed had erosion rates greater than 15 Mg ha-1 yr-1, being mainly related to Plinthosol soil class and roads, thus requiring special attention for the improvement of sustainable management practices for such areas. Eucalyptus cultivation was found to have soil loss greater than Atlantic Forest. Thus, an effort should be made to bring the erosion rates closer to the native forest. Implementation of the USLE model in a GIS framework was found to be a simple and useful tool for predicting the spatial variation of soil erosion risk and identifying critical areas for conservation efforts.

scholarly journals Water erosion risk mapping using derived parameters from digital elevation model and remotely sensed data

2012 ◽  
Vol 15 (3) ◽  
pp. 157-169 ◽  
Author(s):  
Soufiane MAIMOUNI ◽  
Abderrazak EL-HARTI ◽  
Abderrazak BANNARI ◽  
El-Mostafa BACHAOUI
Keyword(s):  
Digital Elevation Model ◽  
Remotely Sensed ◽  
Water Erosion ◽  
Risk Mapping ◽  
Remotely Sensed Data ◽  
Erosion Risk ◽  
Digital Elevation ◽  
Elevation Model
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