Identifying effective approaches for monitoring national natural capital for policy use

In order to effectively manage natural resources at national scales national decision makers require data
on the natural capital which supports the delivery of Ecosystem Services (ES). Key data sources used for
the provision of national natural capital metrics include Satellite Remote Sensing (SRS), which provides
information on land cover at an increasing range of resolutions, and field survey, which can provide very
high resolution data on ecosystem components, but is constrained in its potential coverage by resource
requirements.

Here we combine spatially representative field data from a historic national survey of Great Britain
(Countryside Survey (CS)) with concurrent low resolution SRS data land cover map within modelling
frameworks to produce national natural capital metrics.

We present three examples of natural capital metrics; top soil carbon, headwater stream quality and
nectar species plant richness which show how highly resolved, but spatially representative field data
can be used to significantly enhance the potential of low resolution SRS land cover data for providing
national spatial data on natural capital metrics which have been linked to Ecosystem Services (ES). We
discuss the role of such metrics in evaluations of ecosystem service provision and areas of further development
to improve their utility for stakeholders.