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Symposium on Remote Sensing for Resources Development and Environmental Management / Enschede / August 1986
Recording resources in rural areas
Richard K.Bullard
The National Remote Sensing Centre, Chelmsford, Essex, UK
ABSTRACT: In the developed and the developing countries of the world, land in rural areas is under continuing
pressure. Many of the European countries are attempting to replace the traditional and existing cadastre with
a Multi-Purpose Cadastre (MPC) in an attempt to more adequately record resources. With the advent of the
improved resolution of satellite imagery (2nd and 3rd. generation) the possibility of recording many of the
resources required for a MPC in rural areas will be considered as well as with more conventional imagery.
Many of the parcels of land in Europe are uneconomic and the need for reapportionment has become a major
activity of the land surveyor.
This paper will consider the applications of satellite imagery and aerial photography in conjunction with
the cadastre to determine the resources of individual parcels of land in rural areas with a view to their
improvement and future land use.
1 INTRODUCTION
Rural land has traditionally been under pressure, ever
since man has changed his life style from a nomad to a
pasturalist, and with his subsequent settlement into
communities. The village became the nucleus for the
future urban area.
In the context of this paper rural refers to that
part of a country, particularly in Europe, which has a
'low' population density and is largely given over to
agriculture, forestry, national parks, wilderness and
mountainous areas. Urban refers to that part of the
country which has a 'high' population density and is
given over to housing, industry, transportation, service
centres, energy plants, termini, etc. The 'low' and
'high' densities must be considered as variables in each
country, for example, in countries with large population
densities the respective density figures will be more
than in countries with less population density
Resources in the context of this paper refers to the
items that will be recorded and listed in a multi
purpose cadastre, that is those factors which have a
direct bearing on land.
To be able to record resources in rural areas it will
be necessary to relate them to a spatial dimension. In
those parts of Europe that have a numerical cadastre
the spatial dimension can be related to the parcel
boundaries and this provides a density of control which
fits well into the multi-purpose cadastre. In countries
that do not have defined cadastral boundaries the need
for densification of national control will have to be
undertaken.
Many of the land parcels in Europe are uneconomic and
in an attempt to consolidate and re-apportion them into
economic units there will be a need to establish the
resources that they contain.
The advent of the Digital Terrain Model (DTM) enables
the resources of the land parcel to be considered in
three-dimensions and such variable factors as aspect,
and sun's elevation may be taken into account when
changes are proposed into new property boundaries.
2 PRESSURE ON RURAL LAND
As described in the introduction, rural land is that
land which is less densly populated and is presently
used for agriculture etc. In most countries the rural
region forms the largest area which in developing
countries often contains the largest percentage of the
population. In developed countries the rural region
usually contains the smallest percentage of the total
population.
2.1 Population movement and increase
Even though there is a movement of population in rural
areas into the major urban areas, more so in developing
countries, there is a reverse move from urban to rural
areas now occuring in developed countries. It could
follow that there is more outward pressure in developed
countries. However, the developing countries have the
additional problem of population growth, sometimes
excessive, and although the movement here is presently
towards urban areas the total numbers are still on the
increase in rural areas.
2.2 Food production and agriculture
The need to increase the production of food in rural
areas for an increasing population, largely occuring in
developing countries, puts additional pressure on rural
land. With some of the agricultural techniques adapted
in devloping countries there is a trend for diminishing
return per unit area and in certain circumstances no
return at all. Examples are the short term benefits of
clearing tropical forests for agriculture, often after
only 2 years the land is no longer useable, This
cleared land will not revert back to forest because the
thin top soil has been eroded and only poor secondary
growth will occur.
2.3 Forestry
The increasing demand for timber, both for energy and
for manufacturing paper and wooden objects has involved
more land being allocated to forestry. In Europe
forests where not already established are planted on
poorer soils, in developing countries forests are being
indiscriminately cleared putting more pressure on
remaining forests in rural areas.
2.4 Housing
Vith expanding populations in developing countries
increasing amounts of land are allocated to housing.
Some of the housing will be built by squatters and even
when these people are moved away the sites remain
derelict until clearance takes place.
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