The European Forestry Institute (EFI) published a study on the provision of forest ecosystem services, as a result from the NEWFOREX (New Ways to Value and Market Forest Externalities) EU FP7 project . The volumes can be downloaded here:

• The Provision of Forest Ecosystem Services: Volume I: Quantifying and valuing non-marketed ecosystem services. European Forestry Institute. What Science Can Tell Us 5, 2014
• The Provision of Forest Ecosystem Services: Volume II: Assessing cost of provision and designing economic instruments for ecosystem services. European Forestry Institute. What Science Can Tell Us 5, 2014

Source: EFI