Climate on the farm

-The Indian Express

IPCC report shows how land use affects climate change. It must not be used to target developing countries on global warming

A report released on Thursday by the Intergovernmental Panel on Climate Change (IPCC) has concluded that better management of the world’s farms and forests is necessary to tackle climate change. Land use has always been part of conversations on climate change and activities like afforestation have held an important place in the fight against global warming. But the discourse on combating global warming has given more thrust to curbing vehicular and industrial emissions. The IPCC report warns that clean energy, clean transport and reduction emissions alone will not cut global emissions enough to avoid dangerous warming beyond 2 degrees Celsius. It points out that the global food system is responsible for 21 to 37 per cent of the world’s GHG emissions.

About a quarter of the Earth’s ice-free land area is subjected to what the report describes as “human-induced degradation”. Rapid agricultural expansion has led to destruction of forests, wetlands and grasslands and other ecosystems. Soil erosion from agricultural fields, the report estimates, is 10 to 100 times higher than the soil formation rate. This has created spinoff effects. “When land is degraded, it becomes less productive, restricting what can be grown and reducing the soil’s ability to absorb carbon. This exacerbates climate change, while climate change in turn exacerbates land degradation,” says the report. Moreover, agriculture and allied activities like cattle rearing are major sources of methane and nitrous oxide, far more dangerous GHGs than carbon dioxide.

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The Indian Express, 10 August, 2019, https://indianexpress.com/article/opinion/editorials/climate-change-ipcc-report-global-warming-un-5893072/?fbclid=IwAR0s-M3BFHJqTHB4n6zkxhzI3Kvib4ffoeCreRWJSw93pis

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