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Q.Analyze any five measures for establishing ecological balance in the 'Indira Gandhi Canal Command Area'.

CBSECBSE Class XII Board 2024Subjective· 5mImportance★★★★★
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Establishing ecological balance in the Indira Gandhi Canal Command Area involves afforestation, scientific water management, crop diversification, pasture development, and reclamation of degraded lands.

The Indira Gandhi Canal, a monumental engineering feat, transformed vast stretches of the Thar Desert in Rajasthan into a productive agricultural landscape. While bringing immense benefits in terms of food security and economic development, such large-scale human intervention in a fragile arid ecosystem inherently poses challenges to ecological balance. Maintaining this balance is crucial for the long-term sustainability of the region, ensuring that the benefits are not undermined by environmental degradation. Ecological balance, in this context, refers to the harmonious coexistence of human activities with natural processes, preventing the degradation of land, water resources, and biodiversity.

Here are five key measures adopted for establishing and maintaining ecological balance in the Indira Gandhi Canal Command Area:

  1. Afforestation and Shelterbelt Plantation:

    The arid nature of the region makes it highly susceptible to wind erosion and dust storms. Extensive afforestation and the creation of shelterbelts are vital measures. This involves planting trees along canal banks, roadsides, farm boundaries, and in block plantations. These green belts act as windbreaks, significantly reducing wind velocity and preventing soil erosion. They also help stabilize sand dunes, improve the microclimate by increasing humidity and reducing temperature extremes, and provide much-needed fuelwood and fodder for the local population, while enhancing biodiversity.

  2. Scientific Water Management and Efficient Irrigation Techniques:

    One of the most significant ecological challenges in canal command areas, especially in arid zones, is the risk of waterlogging and salinization due to over-irrigation and poor drainage. To counter this, scientific water management practices are essential. This includes promoting efficient irrigation techniques such as drip and sprinkler irrigation, which deliver water directly to plant roots, minimizing wastage. Lining canals to prevent seepage and constructing proper drainage systems are also crucial to prevent the accumulation of excess water in the soil, thereby averting waterlogging and the subsequent rise of salts to the surface, which renders land infertile.

    Important

    Waterlogging and salinization are major threats to agricultural productivity in irrigated arid regions, making efficient water management indispensable.

  3. Crop Diversification and Promotion of Water-Efficient Crops:

    Initially, the availability of canal water often leads to the cultivation of water-intensive crops that may not be ideally suited to the region's long-term water availability or soil characteristics. To achieve ecological balance, there is a strong emphasis on crop diversification. This involves encouraging farmers to cultivate a mix of crops, including those that are water-efficient and suitable for the local agro-climatic conditions, such as millets, pulses, and oilseeds. Such practices reduce the overall water demand, improve soil health through crop rotation, and enhance the resilience of the agricultural system against environmental stresses.

  4. Development of Pasture Lands: …

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