UPSC Notes
What are Disasters? – Natural Hazards and Disasters

Disasters are sudden, unanticipated tragedies that may be caused by nature, such as tornadoes, hurricanes, earthquakes and floods. Humans also cause disasters by accidents such as explosions, transportation accidents and fires. Other human causes include war, terrorism and epidemics. Disasters ...

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Soil Conservation – Geography

Soil Conservation is a broad discipline that employs various practices to prevent the unsustainable use and deterioration of the soil’s resources. In its broader sense, Soil Conservation represents a sustainable management approach to ensure profitable agriculture as well as environmental ...

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Soil Erosion – Forest Conservation

Soil erosion is a part of soil degradation. It's when the topsoil and nutrients are lost either naturally, such as via wind erosion, or due to human actions, such as poor land management. Soil erosion is a gradual process that occurs when the impact of water or wind detaches and removes soil ...

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Soil Degradation – Geography

Soil degradation can be defined as the decline in soil fertility due to erosion and misuse. Natural processes such as land clearing, erosion, and desertification can lead to a loss of rich nutrients from the soil, resulting in lower levels of organic matter, microbial activity and biological ...

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Classification of Soils

Soils are naturally occurring soft matters forming the chief part of the superficial crust of the earth. They act as substratum or medium for growth of vegetation and constitute one of the most important natural resources for sustaining life on earth. The classification of soils help in ...

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Gulf of Mannar Biosphere Reserve

The Gulf of Mannar Biosphere Reserve is located at the nexus of where Indian subcontinent, the Indo-Burma Biodiversity Hotspot and the tropical marine ecosystems meet. One of the world’s richest regions from a marine biodiversity perspective. The biosphere reserve comprises 21 islands with ...

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Sunderbans Biosphere Reserve

Sunderban is the largest delta and mangrove forest in the world. The Indian Sunderban is bound on the west by river Muriganga and on the east by rivers Harinbhahga and Raimangal. Other major rivers flowing through this eco-system are Saptamukhi, Thakuran, Matla and Goasaba. Sunderban has ...

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Nanda Devi Biosphere Reserve

Nanda Devi Biosphere Reserve, located in the Himalayan Mountains in the northern part of the country, includes as core areas the Nanda Devi and Valley of Flowers National Parks, which are one World Heritage site. Nanda Devi National Park has remained more or less intact because of its ...

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Nilgiri Biosphere Reserve

The Nilgiri Biosphere Reserve boasts of many endemic species, rare and endangered flora and fauna, landscapes of outstanding scenic beauty with its expanses of grass-covered rolling hills, valleys, rivers, waterfalls and small forests. The Nilgiri Biosphere Reserve was the first biosphere ...

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Biosphere Reserves – Forest Conservation

Biosphere reserves are ‘learning places for sustainable development’. They are sites for testing interdisciplinary approaches to understanding and managing changes and interactions between social and ecological systems, including conflict prevention and management of biodiversity. Biosphere ...

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Wildlife Conservation in India

Wildlife Conservation in India, like wild animals everywhere, now faces the threat of human pressure. And for India, the ready exploitation of her natural resources by humans is a long standing challenge. From time immemorial until very recently, wild life faced the threat of hunting and poaching ...

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Farm Forestry – Forest Conservation

Farm forestry is a term applied to the process under which farmers grow trees on their farm lands for commercial and non-commercial purposes. The main objective of growing trees commercially on farms is to provide an additional revenue stream to farmers, while at the same time protecting the ...

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