ELSS managment carbon cycle Flashcards
4 carbon cycle strategies
Afforestation
Farming practices
Wetland restoration
International agreements
positives of afforestation
-global impact when done on a large scale very effective
-tree takes in 21 of kg of carbon dioxide a year
Explain afforestation
Afforestation is planting tress in areas where there is not already trees. This Effects the carbon cycle because sequestion of carbon is increased, trees take in carbon by photosynthesis. A typical tree can absorb around 21 kilograms of carbon dioxide (CO2) per year. Trees made of organic matter.
negatives of afforestation
-trees are an economic resource
-can be hard for LIDC to do so may not be global
Examples and evidence of afforestation
-10% of carbon emissions come from Deforestation globally
-50mill put in UK woodlands scheme: from 2001-2021 aim to increase woodland cover from 14.5% to 16.5% by 2050 in England
-Internationally India China and Spain have positive afforestation rates coverage rate by 2025 is aimed to be 35%
-Enviro Amozania- 200,000ha planted which decreased 12.5 million tonnes of CO2
Explain farming practices
Implementing better farming practices to reduce CO2 emissions. e.g…
-reduce tilage means that less carbon is being lost from soil when its ploughed
-More polyculture growing: means more NPP as lots of different plants are growing at different rates
-Contour ploughing and terracing reduces leaching off organic matter
-Local feeds-stop exporting feeds do grow rotation
Positives of farming practices
-effective
evidence and examples of farming practices
-intensive farming releases 100 million tonnes of CO2 a year
negatives of farming practices
-local
-hard to implement
-these have lower yield and economically bad
needs knowledge and machinery
-Rn land emits 25% of greenhouse emissions or 11 gigatons if farming practices a used this can allow land to act ask a carbon sink and take in 3 gigatons from the atmosphere by 2050.
what is wetland restoration
This is restoring degraded wetlands to there natural physical characteristics. wetlands have lots of vegetation that store carbon . Draining of wetlands causes increased decomposition which releases carbon. Restoring wetlands restores its ability to store carbon. Trees in mangroves are carbon sinks.
Negatives of restoring wetlands
wetlands used for food so its hard to restore
restoring wetlands examples example and evidence
-east Cambridgeshire 400ha of farmland re flooded this saved 325,000 tonnes of carbon.
-RMSAR/EU habitats directive encourage wetland restoration and international level. Carbon sequestion potential is 24-144 co2/yr
-EU CAP helps to protect farmers
What are International agreements
They are agreements made between countries globally, aim to reduce growth of carbon emissions in ACs and LIDCS and Acs to reduce emissions
-Increase carbon trading which is the market-based mechanism designed to reduce greenhouse gas emissions, primarily carbon dioxide government sets a tax
-encourages planning for future
disadvantages of international agreements
-requires ratification from governments that can be hard to get
-investment in technologies
-altered by climatic factors and stages of economic development
International agreements examples and evidence
-Paris agreement in 2015 196 countries involved in working to limit climate change 1.5-2 degrees C
-Kyoto 1997-2001 legally binding targets Australia didn’t ratify mostly US. 36/38 countries complied to 5% reduction 1.2GT emission prevented.
