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Global ecosystem water use efficiency UPSC NOTE


  • Global ecosystem water use efficiency refers to the ratio between the amount of carbon assimilated by plants through photosynthesis and the amount of water lost through evapotranspiration. 

  • It's a critical indicator of how efficiently ecosystems utilize water to produce carbon-rich biomass, impacting their overall productivity and health.

  • Global ecosystem water use efficiency, the carbon assimilation to water evapotranspiration ratio, has experienced a halt in its increase since 2001.

  • This phenomenon is due to a rising vapour pressure deficit.

  • The stalled water use efficiency increase has led to the suppression of global ecosystem photosynthesis.

  • Photosynthesis is a crucial process for the health of ecosystems.

  • The study emphasizes that this trend highlights a way in which the negative effects of climate warming can undermine reliance on nature-based climate solutions.

  • Nature-based climate solutions are vital strategies to achieve carbon neutrality.

  • The disruption in ecosystem photosynthesis could impact the effectiveness of these solutions.

  • Carbon neutrality, also referred to as climate neutrality, is a state in which the net release of carbon dioxide (CO2) into the atmosphere is balanced by an equivalent amount of carbon removal or reduction. 

  • It is a critical concept in addressing climate change and achieving sustainability.



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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Global ecosystem water use efficiency UPSC NOTE
Global ecosystem water use efficiency UPSC NOTE
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
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