Agroforestry-Based Degraded Land Restoration: An Indian Perspective
摘要
Land degradation is one of the primary issues in India that leads to the deterioration of the land’s quality for agricultural production and environmental protection. In India, there are approximately 147.75 million hectares (Mha) of degraded land, of which 93.68 Mha are caused by water erosion, 16.03 Mha by acidification, 14.29 Mha by waterlogging, 9.48 Mha by wind erosion, 5.89 Mha by salinity, and 8.38 Mha by other factors such as ice caps and barren mountains. Different chemical, physical, and biological processes, like shifting agriculture, deforestation, overgrazing, steep slope farming, excessive use of chemical fertilizers, and depletion of forest resources, can cause land degradation. These processes can be caused directly or indirectly by human actions. Land can still be used while preventing degradation thanks to agroforestry. Through the various service and production roles that woody perennials play in agricultural and livestock systems, agroforestry, the intentional integration of perennial plants has the potential to reduce the problem of land degradation. Agroforestry can reduce salt, boost soil fertility, decrease acidity, alkalinity, and desertification, among other things. In the end, it improves soil health, maintaining the land’s suitability for the long-term, sustainable production of a variety of goods. By restoring and boosting land productivity, the agroforestry tactic includes relay-cropping, the use of multipurpose tree species (MPTs), terracing and contour cultivation, alley and strip cropping are suitable to meet the needs of low-resource farmers. Agroforestry has the potential to reduce land degradation when farmers and the community are fully engaged in the planning, development, and execution stages of the project. The design of an agroforestry system must incorporate a variety of stakeholders in order to efficiently support sustainable land production, improve biodiversity, and improve ecosystem services at the plot and landscape scales. Additionally, best practices for diversifying agroforestry systems must be identified, and soil properties and land use in degraded landscapes must be better understood.