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DAILY NEWS ANALYSIS

  • 17 December, 2021

  • 5 Min Read

Biodiversity in the time of flood

GS-III: Biodiversity in the time of deluge

Context

Floods impact the poorest strata of society the most, causing a loss of lives, livelihood options, and assets. There is a need for the assessment of floods from a ‘sustainable development’ perspective.

Causes for floods

  • The root cause of such floods in the high precipitation levels.
  • Anthropogenic factors like unscientific development and over-exploitation of nature aggravate the damages.
  • The global climate has been changing in an unpredictable manner. As per an IPCC report, the Global Green House Gases emissions grew by 70% between 1970 and 2004. Global warming has critical effects on the hydrological cycle.
  • In Kerala, a structural transformation and changing patterns of land use are affecting its environment. A loss in a wetland area will naturally impact the ability to handle floods.

Impact of floods

  • The changing precipitation alters the hydrological systems, resulting in floods and droughts in different regions.
  • Floods wash away topsoil and substantial biodiversity of the area, resulting in a reduced river-water flow, death of earthworms and spread of viral and bacterial diseases among crops.

Way ahead

  • Adequate precautions through dam management and timely public alerts.
  • In construction, it is important to make appropriate decisions on the type and size of the structure, location, materials, and permissible damage it will cause to nature.
  • We need to account for the damage done to natural ecosystems while estimating losses suffered due to natural disasters.

Source: The Hindu


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