NCERT · Class 10 · Social Science · Geography: Forest and Wildlife ResourcesAnalyze the major factors responsible for the depletion of flora and fauna in India. How has human activity contributed to this environmental degradation?

Introduction to Flora and Fauna Depletion\nIndia is one of the richest countries in the world in terms of its vast array of biological diversity. However, this immense biodiversity is under severe threat. The depletion of flora and fauna is not a recent phenomenon; it has accelerated dramatically over the past few decades due to various anthropogenic and natural factors.

Major Factors Responsible for Depletion

1. Agricultural Expansion:

   • Post-independence, agricultural expansion has been one of the major drivers of deforestation. Between 1951 and 1980, according to the Forest Survey of India, over 26,200 sq. km of forest land was converted into agricultural land all over India.
   • Substantial parts of tribal belts, especially in the northeastern and central India, have been deforested or degraded by shifting cultivation (jhum), a type of slash-and-burn agriculture.

2. Large-Scale Development Projects:

   • River valley projects have had a massive impact on forests. For example, the Sardar Sarovar Project in the Narmada valley has inundated thousands of hectares of forests.
   • Mining is another major factor behind deforestation. The Buxa Tiger Reserve in West Bengal is seriously threatened by dolomite mining. Mining has disturbed the natural habitat of many species and blocked the migration routes of several animals, including the Indian elephant.

3. Grazing and Fuelwood Collection:

   • Large-scale cattle grazing and the indiscriminate cutting of trees for firewood have put immense pressure on forest ecosystems. Instead of allowing natural regeneration, excessive biotic interference damages saplings and degrades soil quality.

4. Poaching and Illegal Hunting:

   • Hunting and poaching for commercial trade of animal skins, tusks, horns, bones, and live pets have pushed many species to the brink of extinction. Unchecked human greed and illegal wildlife trafficking remain a major challenge.

5. Environmental Pollution and Forest Fires:

   • Air pollution, water contamination, and frequent forest fires, often sparked by human negligence, destroy vast tracts of habitats, killing millions of microorganisms, insects, birds, and animals.

Socio-Economic and Cultural Dimensions\nUnequal access, inequitable consumption of forest resources, and sharing of environmental benefits among different social groups have heavily impacted the poor who depend directly on forests. Population growth has further increased the demand for land and resources, aggravating ecological distress.

Conclusion\nThe rapid degradation of flora and fauna undermines ecological security. Protecting our remaining forest resources requires stringent law enforcement, sustainable development practices, and active community participation.