Tile Drainage Essay
ABSTRACT
Water is an essential source which is required by all living organisms on earth. Hydrology is basically the study of movement, availability and quality of water. Environmental is affected due to hydrological alterations that are due to construction of dams /reservoirs, agricultural irrigation, tile drainage etc. Due to construction of dams Earth’s climate is changing and warm climate reservoirs are leading to the emission of methane gas which adds much to climate change than carbon. The impacts of irrigation relates to the quantity and quality of soil and water. Due to large scale irrigation, the groundwater level has continued to decrease and as a result lower ground water level has been observed. Tile drainage is the process of
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IMPACTS OF AGRICULTURAL IRRIGATION
3.1. INTRODUCTION
The nature of soil and water is greatly affected by the environmental factors. Due to irrigation, the natural and social condition of river basin has deteriorated.
3.2. DIRECT EFFECTS:
In the irrigation scheme, water is drawn from groundwater, lakes or rivers and is distributed over an area to be irrigated area and increased level in water table.
Atmospheric moisture has immediate affects due to irrigational methods such as atmospheric circulation which delivers rain to different parts . A key area of concern is the increase and decrease in irrigation which causes an alteration in downwind areas.
3.3. INDIRECT EFFECTS:
These are those effects which takes long time to develop and also they lasts for longer time. The passive effects of irrigation include:
WATER LOGGING
SOIL SALINATION
ECOLOGICAL IMBALANCE
SOCIO-ECONOMIC CONSEQUENCES
There is an immediate effect on the land due to water logging. The other two consequences takes longer time to occur but can affect largly. In many parts of our country irrigation schemes include use of water wells. Due to the use of water wells, there is an increase in water
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