Notes and Study material for Exams
River System of Himachal Pradesh The Himalaya houses a vast reservoir of moisture both in the form of ice, fresh water, and underground water. The rivers draining Himalayas sustain life in the Northern part of Indian sub-continent. There are five main rivers which flow through Himachal Pradesh. Four out of these five rivers found mention … Read more
Irrigation and Hydropower of Himachal Pradesh Irrigation is the application of controlled amounts of water to Plants at needed intervals. It helps grow agricultural crops, maintain landscapes, and revegetate disturbed soils in dry areas and during periods of inadequate rainfall. Types of irrigation Surface irrigation- Itis the oldest form of irrigation and has been in … Read more
FOOD CHAIN- A food chain starts with producers and ends with top carnivores. The sequence of eaten and being eaten, produces transfer of food energy and it is known as food chain. Grazing food chain-The consumers which start the food chain, utilising the plant or plant part as their food, constitute the grazing food chain. … Read more
Eco-System-An ecosystem is defined as a structural and functional unit of Biosphere consisting of community of living beings and the physical Environment, both interacting and exchanging materials between them. It includes Plants, trees, animals, fish, birds, micro-organisms, water, Soil, and people. When an ecosystem is healthy (i.e. sustainable) it means that all the Elements live … Read more
Fisheries. Education and awareness. Education and awareness are essential for conserving biodiversity. People need to understand the importance of biodiversity and the threats it faces in order to take action to protect it. Policy and regulation. Policy and regulation can also play a role in conserving biodiversity. Governments can pass laws that protect biodiversity and … Read more
Distribution of natural Resources World Distribution of forest reserves Forests cover 31 percent of the world’s land surface, just over 4 billion hectares. (One hectare = 2.47 acres.) This is down from the pre-industrial area of 5.9 billion hectares. According to data from the U.N. Food and agriculture Organization, deforestation was at its highest rate … Read more
Agro-ECOLOGY and its relevance to man The term Agroecology can be used in multiple ways, as a science, as a movement and as a practice. Broadly stated, it is the study of the role of agriculture in the world. Agroecology provides an interdisciplinary framework with which to study the activity of agriculture. In this framework, … Read more
Fresh water Ecosystems– The salt content of fresh bodies is very low, always less than 5 ppt (parts per thousand). E.g lakes, ponds, pools, springs, streams, and rivers Marine ecosystems – the water bodies containing salt concentration equal to or above that of sea water (i.e., 35 ppt or above). E.g shallow seas and … Read more
found where rainfall is about 25-75 cm per year, not enough to support a forest, but more than that of a true desert. vegetation formations that are generally found in temperate climates. In India, they are found mainly in the high Himalayas. The rest of India’s grasslands aremainly composed of steppes and savannas. Steppe … Read more