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Heat waves pushed 57 million hectares of tropical forests beyond photosynthesis limits: Study

A new study reveals that heat waves have pushed 57 million hectares of tropical forests beyond their photosynthesis limits, threatening carbon sequestration and biodiversity. This area could nearly double to 160 million hectares by 2100 — larger than South Africa — if warming continues. The findings highlight accelerating climate impacts on critical ecosystems, with implications for global carbon budgets and climate mitigation targets under the Paris Agreement.

Source: Down To Earth. This summary and analysis are AI-written from that report and are not individually fact-checked — confirm names, dates and figures with the source before you rely on them.

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Key points

Exam-ready takeaways

57 million hectares of tropical forests exceeded photosynthesis temperature limits due to heat waves

Projected to reach 160 million hectares by 2100 — area larger than South Africa (122 million hectares)

Study published in Down To Earth (downtoearth.org.in), a leading Indian environmental science publication

Photosynthesis breakdown reduces carbon uptake, weakening forests' role as carbon sinks

Findings relevant to IPCC assessments, UNFCCC global stocktake, and India's forest cover targets under NDC

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