Maintenance of forest cover in headwater areas

Code: 
F02
Sector: 
Forest
The complete description of the NWRM: 
Summary: 

Headwaters are the source areas for rivers and streams, crucial for sustaining the structure, function, productivity and complexity of downstream ecosystems. They are vital to hydrologic cycling as they are one of the main areas where precipitation contributes to surface and groundwater. Headwaters are typically less intensively used than downstream areas. In many headwater areas, extensive agriculture, forests or other semi-natural land cover types predominate. Forests in headwater areas have a beneficial role for water quantity and quality. Creating or maintaining forest cover in headwater catchments is a widely used practice in many major cities including New York, Istanbul and Singapore, as these cities are reliant on headwater forests for drinking water provisioning. Forest soils generally have better infiltration capacity than other land cover types and may act as a “sponge”, slowly releasing rainfall. In areas of high relief, afforestation of headwater catchments can contribute to slope stabilization and may reduce the risks associated with landslides. On the other hand, afforestation of headwaters in dry areas may lead to reduction of water yield.

 

Possible benefits with level: 
Benefits Levelsort descending
BP1 - Store runoff High
BP2 - Slow runoff High
BP5 - Increase evapotranspiration High
BP6 - Increase infiltration and/or groundwater recharge High
BP7 - Increase soil water retention High
BP8 - Reduce pollutant sources High
BP9 - Intercept pollution pathways High
BP10 - Reduce erosion and/or sediment delivery High
BP14 - Create terrestrial habitats High
BP17 - Absorb and/or retain CO2 High
ES1 - Water storage High
ES3 - Natural biomass production High
ES5 - Climate change adaptation and mitigation High
ES6 - Groundwater/aquifer recharge High
ES7 - Flood risk reduction High
ES8 - Erosion/sediment control High
ES9 - Filtration of pollutants High
ES10 - Recreational opportunities High
ES11 - Aesthetic/cultural value High
PO8 - Prevent groundwater status deterioration High
PO9 - Take adequate and co-ordinated measures to reduce flood risks High
PO10 - Protection of important habitats High
PO11 - Better protection for ecosystems and more use of Green Infrastructure High
PO14 - Prevention of biodiversity loss High
BP15 - Enhance precipitation Low
PO1 - Improving status of biology quality elements 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
ES2 - Fish stocks and recruiting Low
BP11 - Improve soils Medium
BP12 - Create aquatic habitat Medium
BP13 - Create riparian habitat Medium
BP16 - Reduce peak temperature Medium
ES4 - Biodiversity preservation Medium
PO5 - Improving quantitative status Medium
PO6 - Improving chemical status Medium
PO7 - Prevent surface water status deterioration Medium
PO12 - More sustainable agriculture and forestry Medium
PO13 - Better management of fish stocks Medium
Last updated: 09 Jun 2015 | Top