English Abstract The Ministry of Agriculture, Nature Management and
Fisheries is preparing the Second structure plan for the rural areas. One
of the policy topics to address is the need of greenbelts in the urban
fringe to provide recreational facilities for the urban population. Several
organisations have indicated that these recreational facilities are
inadequate. For this reason the Ministry considers to adapt the task for
greenbelts in the urban fringe of the First Structure plan for the rural
areas. The Nature Policy Assessment Office was asked to evaluate the need
for recreational facilities in the urban fringe. This report evaluates a
proposal to develop 60000 hectares new forests, hedges, line plantings and
public paths within 10 kilometre from the urban fringe. This proposal is
based on a method to compare the demand for recreational activities with the
actual recreational capacity. The demand was calculated for each
residential area as the capacity for the whole area within 10 kilometre from
that residential area. This 10-kilometre radius is chosen as it corresponds
with the length of a normal short bicycle trip or walking tour starting at
home.The evaluation of the proposal and the underlying methodology starts
with a description of the assumptions and restrictions of the proposal.
Next the calculation and comparison of demands and recreation capacity is
analysed. There are two uncertain parameters in the calculation with a
considerable impact on results: the estimation of the recreational capacity
of agricultural land and the radius of the area considered. Both parameters
were tested on their sensitivity. It is concluded that the method to
compare the demands with recreational capacity is adequate to estimate a
task for greenbelts in the urban fringe. Two adaptations however are
necessary: The method improves when a 5-km radius is considered in stead of
10-km. This 5-km radius fits better with the actual behaviour of people.
The future task for greenbelts in the urban fringes should be presented as a
range of values in stead of one value. This range indicates the uncertainty
in assessing the recreational capacity of agricultural land.Depending on
the policy restrictions chosen the deficit of greenbelts in the urban fringe
ranges from 20 000 to 120 000 hectares.
Rapport in het kort
Naast de jaarlijkse Natuurbalansen en de vierjaarlijkse
Natuurverkenningen van het Milieu- en Natuurplanbureau is er een toenemende
behoefte aan tussentijdse adviezen over actuele beleidsthema's. Een van die
thema's is groen in en om de stad. Het Ministerie van Landbouw,
Natuurbeheer en Visserij wil een goed onderbouwde taakstelling voor dit
beleidsthema in het Tweede structuurschema groene ruimte opnemen. Daarom
heeft het Ministerie aan het Milieu- en Natuurplanbureau gevraagd om de
vraag en het aanbod van groen in en om de stad te beoordelen. Dit rapport
is een achtergronddocument bij het briefadvies "Groen in en om de stad" van
het Milieu- en Natuurplanbureau aan het Ministerie. Het geeft een
beoordeling van de onderbouwing van een voorstel van de ANWB om 60000 ha
bos, kleine landschapselementen en paden aan te leggen binnen 10 kilometer
van de bebouwde kom.
