What was a direct impact of irrigation?

What was a direct impact of irrigation?

Direct Environmental Impact Of Irrigation Increased evaporation in irrigated areas can cause instability in the atmosphere, as well as increase levels of rainfall downwind of the irrigation.

What did the development of irrigation lead to?

Irrigation led to the existence of artisans and other specialists because it allowed for a greater amount of agricultural production. In other words, it allowed people to produce more crops using a given amount of land. Irrigation allows for more intensive farming.

What is a result of irrigation?

The expansion and intensification of agriculture made possible by irrigation has the potential for causing: increased erosion; pollution of surface water and groundwater from agricultural biocides; deterioration of water quality; increased nutrient levels in the irrigation and drainage water resulting in algal blooms.

What are the direct and indirect benefits of irrigation?

In general, the direct benefits of irrigation in terms of increased agricultural output accrue in proportion to landholdings, with large benefits accruing to large landholders. However, indirect employment benefits accrue primarily to those who sell labour, in particular the landless.

What is the environmental impact of irrigation?

There are many positive impacts of irrigation on the environment. Among the negative impacts which appear in the mentioned spheres prevalent impacts is the danger of waterlogging and salinization of soils and waters, rise in groundwater table, spread of water born diseases, pollution of waters and many others.

How does irrigation affect water?

Humans alter that hydrological cycle through water use demand-irrigation being a large use-and cause changes in water supply by affecting evaporation and runoff. “Pumping surface water for irrigation depletes surface water but enhances groundwater. Pumping groundwater for irrigation has the opposite effect.

When was irrigation developed?

The earliest archeological evidence of irrigation in farming dates to about 6000 B.C. in the Middle East’s Jordan Valley (1). It is widely believed that irrigation was being practiced in Egypt at about the same time (6), and the earliest pictorial representation of irrigation is from Egypt around 3100 B.C. (1).

Was the development of irrigation a positive or negative change?

What is direct irrigation?

In direct irrigation system, water is directly diverted from the river into the canal by the construction of diversion weir or barrage across the river without attempting to store water. This method is practiced where the river has the adequate perennial supply to feed the canal system at the times of crops periods.

Which of these is an indirect benifit of irrigation?

The indirect benefits include income and employment effects in the agro-industry and non-farm sector of the regional economy and lower prices for food grains benefiting in particular low income consumers.

How does the irrigation system affect the environment?

Direct Environmental Impact Of Irrigation. Because irrigation systems deal with redirecting water from rivers, lakes, and underground sources, they have a direct impact on the surrounding environment. Some of these impacts include: increased groundwater level in irrigated areas, decreased water flow downstream of sourced rivers and streams,

What was the history of irrigation in India?

Of India), on its web site briefly explains the history of irrigation development in India which can be traced back to prehistoric times. Vedas, Ancient Indian writers and ancient Indian scriptures have made references to wells, canals, tanks and dams.

What is the purpose of an irrigation scheme?

Irrigation, sometimes referred to as an irrigation scheme, is the act of redirecting water for a specific purpose. This purpose is usually to water agricultural crops, to maintain landscapes, or to provide much needed water during a drought.

Where does the water for irrigation come from?

Modern irrigation systems use reservoir s, tanks, and wells to supply water for crops. Reservoirs include aquifer s, basins that collect snowmelt, lake s, and basins created by dams. Canals or pipeline s carry the water from reservoirs to fields.