Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

damen, m. c. j.

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Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856641294

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: IX Seiten, Seiten 551-956

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A,. A. Balkema

Identifier (digital):: 856641294

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,2)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Damen, M. C. J.

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: 8 Geo-information systems. Chairman: J. J. Nossin

Write comment:: Wegen zu enger Bindung kommt es teilweise im Original zu Textverlust.

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Evaluation of regional land resources using geographic information systems based on linear quadtrees. James Hogg, Mark Gahegan & Neil Stuart

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Structure type:: Chapter

917 Symposium on Remote Sensing for Resources Development and Environmental Management / Enschede / August 1986 Evaluation of regional land resources using geographic information systems based on linear quadtrees James Hogg, Mark Gahegan & Neil Stuart School of Geography, University of Leeds, UK ABSTRACT: Evaluation of regional land resources involves the integration and analysis of geographic data which comes from a variety of different sources and in many different forms. This paper describes results of a pilot study using a computerised geographic informations system (GIS) based on linear quadtrees to integrate and analyse geographic data for evaluation of regional land resources near Matlock in the Peak District of Derbyshire, England. Results are presented which show the response to queries involving set logic operations on binary raster images and are discussed in relation to methods of regional land resources evaluation. The paper concludes that GIS based on linear quadtrees provide a flexible, powerful analytical tool for geographical research involving integration of geographic data from various sources, including remote sensing. RESUME: L' evaluation des ressources regionales d'i terrain comprend l'intégration et l'analyse de données géographiques provenant de différentes sources et se présentant sous des formes differentes. Cette recherche décrit les résultats d'une étude-pilote utilisant un système d'information géographique sur ordinateur, de façon a établir une évaluation des resources régionales d'un terrain situé près de Matlock, dans le Peak District du Derbyshire, en Angleterre. La recherche conclut que le Système d'informations Géographiques est bases sur des "quadtrees" linéaires, et fournit un outil d'analyse flexible et efficace pour la recherche géographique concernant l'intégration de données géographiques provenant de sources diverses, y compris les images satellites. INTRODUCTION Evaluation of land resources involves the study of geographic data from many different sources and in many different forms. Geographic data can be efficiently integrated and analysed using computerised geographic information systems (GIS). These are data base management systems which allow users to store, retrieve, manipulate, analyse and display geographic data at their request. The concept of GIS has evolved over the past two decades (Tomlinson 1984). Its origin lies in the computerised data banks which were created to store locational data such as the coordinates of points for specific applications in surveying and mapping. It has now broadened and expanded rapidly to embrace sophisticated computerised systems for modelling and decision-making in land management (Dangermond, 1984; Estes et. al. 1985). The purpose of this paper is to describe the characteristics of a pilot GIS that we are developing and to demonstrate its use for land resources evaluation in an area near Matlock in the Peak District National Park, Derbyshire. Results are presented and discussed in relation to traditional methods of land resources evaluation and the need to integrate geographic data from different sources, with various levels of resolution and accuracies. In order to place the current work in context, we begin by outlining recent changes in the approach to land resources evaluation and trends in the development of integrated GIS. Then we describe a quadtree data model for encoding images and present and discuss results. LAND RESOURCES EVALUATION Land resources evaluation is concerned with making assessments about man's potential use of land for purposes such as agriculture, forestry, recreation, urban planning or engineering (Christian and Stewart, 1968). It involves analysis of the capabilities and constraints imposed by the physical characteristics of a region and is usually conducted in support of some decision-making process in land management. It is carried out by scientists from many different fields of study but, in many cases, they adopt a similar approach, though of course the level of detail and specific requirements and methods usually differ (Mitchell, 1973). Moreover they draw typically upon a common core of information about the land. The extent of this common core is usually substantial - all require basic information about topography, geology, soils, climate and land use. While there are usually minor differences in specific requirements, the major difference often lies in the level of detail required. In conducting land resources evaluations, land is usually characterised by a distinctive assemblage of attributes and interlinking processes in space and time (Townshend, 1983). The attributes include topography, soils, water, climate, vegetation, and fauna as well as the

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