Which one of the following is the main cause of land degradation in Punjab?

Intensive cultivation

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Over irrigation

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Deforestation

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Overgrazing

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Solution

The correct option is B
Over irrigation

The correct answer is option (b). Over irrigation is the main cause of land degradation in Punjab. The potential direct negative environmental impacts of the use of groundwater for irrigation arise from over-extraction (withdrawing water in excess of the recharge rate). This can result in the lowering of the water table, land subsidence, decreased water quality and saltwater intrusion in coastal areas.

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