, 9 tweets, 7 min read Read on Twitter
Takeaways from the #IPCC Special Report on #ClimateChange & Land (#SRCCL). A thread.

1) We use a lot of land (much unsustainably)

Humans directly affect ~72% of "global ice-free land surface" & all is impacted by climate change (e.g. through warming & more intense extremes

2) A two-way interaction

Our use of land drives #ClimateChange ("agriculture, forestry and other land use" are ~23% of global man-made GHG emissions) & climate change adds stresses so worsens existing risks (e.g. biodiversity & degradation from extremes events)

3) As well as being an emission source, land is a sink

Photosynthesis draws down carbon dioxide from the atmosphere and fixes it in plants (and soils). Overall the land is a net sink of ~29% of total human-induced CO2 emissions.

4) The global food system contributes ~30% of human-induced GHG emissions

This is from land-use change (e.g. deforestation / natural ecosystem conversion), farming (e.g. fertiliser, ruminants), getting it to your plate (e.g. transport + refrigeration)

5) A lot of food emissions are unnecessary

25-30% of total food produced is not eaten (yet 821m are undernourished) & this contributes 8-10% of man-made GHG emissions. Inefficiencies in our consumption & food distribution means pressure to produce more food.

6) There is a triple challenge

We need to limit #ClimateChange, restore nature and ensure food security (an important part of sustainable development). Because the land is finite and can be used for different purposes, competition can arise...

7) Sustainable land management is needed...

Win-win-wins - actions that are good for #ClimateChange adaptation and mitigation can also protect nature and improve food security - BUT, if done at the wrong scale or in the wrong way will see negative trade-offs.

8) ...and we need to fix the food system

Farm better and improve consumption patterns (healthy lower-GHG emissions diets / cut food loss and waste).

Its important that the #IPCC report on #ClimateChange & land reflects the underlying science - governments must now respond to the findings & raise ambition of climate pledges:

We need to transform the way we use land & cut fossil fuels to secure a climate-safe future
9/9 #SRCCL
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