Potential Impacts of Climatic Variability on Indian Himalayan Region

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Kavita Tariyal and Dhanesh Mohan Bartwal

Department of Applied Sciences and Humanities, THDC Institute of Hydropower Engineering and Technology, Bhagirthipuram, Tehri Garhwal-249001, Uttarakhand, India

The Himalayan region represents enormous variability of climates, hydrological and ecological systems, plus a diversity of cultures and communities. It is an essentiality to the ecological security of the Indian landmass, through providing forest cover, feeding recurrent rivers that are the source of potable water, irrigation, and hydropower, conserving biodiversity, providing a rich foundation for high value agriculture, and spectacular landscapes for sustainable tourism. Increasing concentration of greenhouse gases in the troposphere and the consequential global warming is posing a great environmental threat to water and food security at universal level. Change in climate may affect exposures to air pollutants by affecting weather, anthropogenic emissions, and by changing the distribution and types of airborne allergens. This potential variability in climate will have a serious impact on several ecosystem services, such as cleaning water and removing carbon from the atmosphere. Various services of ecosystems viz. land and water resources, agriculture, biodiversity will experience a wide range of stresses together with pests and pathogens, invasive species, atmospheric pollution, acute events, wildfires and floods. Direct stresses posed due to climate change may get intensified through high temperatures, reduced water availability, and altered frequency of extreme events and severe storms. Climate change will potentially make a threat on the availability of, and access to, water resources. The Himalayan ecosystem is vulnerable to the impacts and consequences of a) changes on account of natural causes, b) climate change resulting from human-induced emissions and c) developmental paradigms of the modern society. Adaptation factors in the element of ‘sustainability’ into development initiatives and provides for additional measures and resources to safeguard environmental gains against climate impacts.

Keywords: Adaptation; Anthropogenic emissions; Climate impacts; Ecosystem services; Himalayan ecosystem; Sustainability; Water resources.