Targeted planting for 'catching' precipitation

Code: 
F04
Sector: 
Forest
The complete description of the NWRM: 
Summary: 

There is some evidence to suggest that loss of tree cover on Mediterranean hill slopes has altered weather patterns, which in turn have altered precipitation amount and timing. Modelling results suggest that Mediterranean precipitation regimes are very sensitive to variations in air temperature and moisture. Land use change and associated deforestation may have led to changes from and open monsoon-type regime with frequent summer storms over inland mountains to a regime dominated by closed vertical atmospheric recirculation where feedback mechanisms suppress storms over the coastal mountains and lead to increased summer time sea surface warming. This warming leads to torrential rains in autumn and winter. These rains can occur across the Mediterranean basin. This can be exacerbated by greenhouse heating associated with air pollutants.  Targeted afforestation in some parts of the Mediterranean may be one means of combating drought and desertification. However, caution should be taken when choosing areas for afforestation to avoid possible adverse effects, as there is some evidence that afforestation in dry environments, especially in montane areas, may decrease water yield and cause water deficit in the downstream rivers. Local tree species should be used to reduce risks to biodiversity.

Illustration(s): 
Possible benefits with level: 
Benefits Levelsort descending
BP15 - Enhance precipitation High
ES3 - Natural biomass production High
ES5 - Climate change adaptation and mitigation High
ES6 - Groundwater/aquifer recharge High
ES8 - Erosion/sediment control High
BP2 - Slow runoff High
BP1 - Store runoff High
ES1 - Water storage High
ES9 - Filtration of pollutants High
ES10 - Recreational opportunities High
ES11 - Aesthetic/cultural value High
PO5 - Improving quantitative status Low
PO7 - Prevent surface water status deterioration Low
PO8 - Prevent groundwater status deterioration Low
BP13 - Create riparian habitat Low
PO2 - Improving status of physico-chemical quality elements Low
PO3 - Improving status of hydromorphology quality elements Low
PO4 - Improving chemical status and priority substances Low
PO6 - Improving chemical status Low
PO10 - Protection of important habitats Low
BP5 - Increase evapotranspiration Medium
BP6 - Increase infiltration and/or groundwater recharge Medium
BP7 - Increase soil water retention Medium
BP10 - Reduce erosion and/or sediment delivery Medium
BP11 - Improve soils Medium
BP16 - Reduce peak temperature Medium
BP17 - Absorb and/or retain CO2 Medium
ES4 - Biodiversity preservation Medium
ES7 - Flood risk reduction Medium
PO14 - Prevention of biodiversity loss Medium
BP8 - Reduce pollutant sources Medium
BP9 - Intercept pollution pathways Medium
BP14 - Create terrestrial habitats Medium
PO1 - Improving status of biology quality elements Medium
PO9 - Take adequate and co-ordinated measures to reduce flood risks Medium
PO11 - Better protection for ecosystems and more use of Green Infrastructure Medium
PO12 - More sustainable agriculture and forestry Medium
Last updated: 09 Jun 2015 | Top