Soil erodibility

Runoff reduction is the goal of soil and water conservation in agricultural watersheds. Through the runoff, many substances of soil such as sediment, nutrients have been eroded to end up in streams, rivers, and lakes. In decades, studies have revealed various mitigation, including structure and non–structure conservation ranging from field scale to watershed scale.

14p viironman 02-06-2023 5 3   Download

This study investigates the spatial pattern of soil erosion risk and map the annual soil loss rate in the Upper Beles watershed of the Blue Nile Basin, Ethiopia. The Revised Universal Soil Loss Equation (RUSLE) model, coupled with geographical information system (GIS), has been adopted for soil loss estimation.

9p thebadguys 15-01-2022 7 0   Download

Soil erosion strongly affects crop yield, undermines the long term productivity of farm land and sustainability of farming system, and poses a major threat to the livelihood of the farmers and rural communities. The United Nations Environmental Program reported that the productivity of soil has reduced and resulting in economically unfeasible cultivation on about 20 million hectare of land each year due to soil erosion and resulting degradation of land.

17p chauchaungayxua6 26-06-2020 19 2   Download

The paper summarizes research results of the use of different types of grasses; their use as important and effective vegetative hedge that when grown on the contour significantly reduces the flow of sediment from eroding sites and reduces runoff, both simultaneously, and at a low cost, compared to more traditional engineered practices. Various grasses have unique characteristics and capability to reduce run off, bind soil at slope over a wide range of site conditions.

9p cothumenhmong4 23-03-2020 12 1   Download

Agriculture is the driving force of economy of our country. There is growing awareness on health, food safety and environmental issues associated with the indiscriminate use of pesticides and fertilizers. The alternative form of production such as organic farming is the spectrum of production methods that is supportive of the environment and safety food. Based on the principle of organic agriculture on 7th of every month paid training programme on organic agriculture is organizing at this Department of Sustainable Organic Agriculture since 2015 onwards.

4p kequaidan2 11-12-2019 10 1   Download

Hydraulic properties of soils and soil erodibility are expected to vary after rainfall because of the impact energy of raindrops. Resistance both to rainfall detachment and to runoff detachment might differ after rainfall, and temporal changes in soil erodibility take place.

7p aquaman27 15-01-2019 17 2   Download

Choosing a particular textural fraction as an erodibility predictor is often confusing because various fractions of soil particles have been introduced as erodibility index by many researchers. Recently, advances in fractal theory have introduced a scaling parameter for characterizing soil fragments.

8p masterbarista 15-01-2019 21 1   Download

Soil erosion is a hazard traditionally associated with agriculture in tropical and semi-arid areas and is important for its long-term effects on soil productivity and sustainable agriculture. It is, however, a problem of wider significance occurring additionally on land devoted to forestry, transport and recreation. Erosion also leads to environmental damage through sedimentation, pollution and increased flooding. The costs associated with the movement and deposition of sediment in the landscape frequently outweigh those arising from the long-term loss of soil in eroding fields.

316p coeus75 29-01-2013 50 11   Download

Many of the Earth’s elements travel or cycle through the natural environment. This means that they are transported from the soil into nearby lakes and rivers, and then evaporate from the water into the air, to be transported by wind and eventually re-deposited to the surface where the cycle starts over again. Mercury cycles through the environment in this way (see Figure 5). An atom of mercury may begin its journey by being eroded from rocks on the shore of a lake or by being vented into the atmosphere as mercury vapour from a volcanic eruption. These are natural emissions.

90p yeurauxanh88 01-10-2012 59 4   Download