Haritima : The Environmental Society Of Hansraj College

Month: June 2021

Land Resources, Land Use Change, Land Degradation, Soil erosion and Desertification

Land Resources and Land Use Change Land resources include hills, valleys, plains, river basins, wetlands, etc. Land is a finite resource, but if utilized properly it can be considered as a renewable resource. It will be converted into non-renewable when immensely toxic industrial and nuclear wastes are disposed on it. Land is the most important …

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Types of ecosystems

ecosystems An ecosystem is a community of living organisms in conjunction with the non-living components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows. terrestrial ecosystems Natural terrestrial ecosystems exist in various types of forests, grasslands, semi-arid areas, deserts, and coasts; in intensively …

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ecological succession Ecological Succession: Change in the Biotic component in a subsequent period is Succession due to factors like weather, geography, climate, biodiversity, etc affecting directly. TYPES OF ECOLOGICAL SUCCESSION: 1.PRIMARY SUCCESSION It initiates in areas that are completely devoid of any succession previously. It’s a new succession. It takes millions of years to establish …



Recent studies conducted by Florida State University has revealed an interesting fact about Marine Sharks. The university concluded that sharks possess an internal navigation system similar to GPS that allows them to use Earth’s magnetic forces to travel long distances with accuracy. A group of researchers from Florida state university used 20 Bonnethead sharks as …


Sustainable Development

Stockholm Conference (1972) Indira Gandhi said that Poverty was the greatest Polluter.  Rich nations – Serious Environmental problems This meant that environmental problems were different in different nations.  Poor nations- Problems related to poverty As a response to the world’s growing social & environmental problems, The Earth Summit also known as the UN Conference on …

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Multidisciplinary Nature of Environmental Studies

Environmental Science is the study of the interaction of physical, chemical and biological components of human Biotic surroundings and  there effects on physical adaptation of  biological species. To put it straight any action taken by human and its effect on the surrounding and vice versa comes under the purview of Environmental Sciences. COMPONENTS: The subject …

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WHAT IS ECOLOGY? The term Ecology was coined by Earnst Haeckel in 1869. It is derived from the Greek words Oikos- home + logos- study. So ecology deals with the study of organisms in their natural home interacting with their surroundings. The surroundings or environment consists of other living organisms (biotic) and physical (abiotic) components. …


Definition, Scope and importance of EVS

Environment- “the sum total of water, air and land and the inter-relationships that exist among them and with the human beings, other living organisms and materials.” Defined by Environmental (Protection) Act,1986. The gambit of our surrounding, natural elements, biotic and abiotic constitutes, and physical factors responsible for supporting survival, growth, and constant development of living …

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