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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Design and Implementation of Environmental Information Systems - Three case studies for managing climate and land-use change in Forestry and Agriculture

Thiele, Jan Christoph 08 February 2019 (has links)
No description available.
2

Making water information relevant on local to global scale – the role of Information Systems for Integrated Water Management

Hannerz, Fredrik January 2008 (has links)
<p>Relevant information is essential for finding solutions in Integrated Water Management (IWM). Complex water systems and a need for increasing integration of sectors, actors and scales in IWM require new methods for developing and managing such information. This thesis investigates the role of information within the IWM process, as well as the main challenges for development of representative, accessibleand harmonized information. Results show how information needs and the information production process for IWM may be systematized, and indicate a large potential for information system development for IWM. However, in order to reach the full potential, today’s limited and heterogeneous water information needs to become more comprehensive, transparent, interoperable, dynamic, scalable and openly accessible. Large pressures on water systems are found in coastal catchment areas that are unmonitored across the local to the global scale, indicating a large importance of these areas for nutrient and pollutant loading. The globally accessible runoff data from catchment areas that are rich in pressures from population, agriculture and general economic activity further exhibit a rapidly declining trend during recent years. Major water system changes may therefore pass unnoticed if analyzed on the basis of openly accessible runoff global data. Furthermore, large discrepancies are found between land cover databases, which may result in major uncertainties in quantification of water and evapotranspiration flows. Identified information challenges may be relatively easily overcome by making better use of available information, while other challenges such as development of consistent baselines of core data and a possible re-prioritization of water-environmental monitoring programs may be both difficult and costly.</p>
3

Making water information relevant on local to global scale – the role of Information Systems for Integrated Water Management

Hannerz, Fredrik January 2008 (has links)
Relevant information is essential for finding solutions in Integrated Water Management (IWM). Complex water systems and a need for increasing integration of sectors, actors and scales in IWM require new methods for developing and managing such information. This thesis investigates the role of information within the IWM process, as well as the main challenges for development of representative, accessibleand harmonized information. Results show how information needs and the information production process for IWM may be systematized, and indicate a large potential for information system development for IWM. However, in order to reach the full potential, today’s limited and heterogeneous water information needs to become more comprehensive, transparent, interoperable, dynamic, scalable and openly accessible. Large pressures on water systems are found in coastal catchment areas that are unmonitored across the local to the global scale, indicating a large importance of these areas for nutrient and pollutant loading. The globally accessible runoff data from catchment areas that are rich in pressures from population, agriculture and general economic activity further exhibit a rapidly declining trend during recent years. Major water system changes may therefore pass unnoticed if analyzed on the basis of openly accessible runoff global data. Furthermore, large discrepancies are found between land cover databases, which may result in major uncertainties in quantification of water and evapotranspiration flows. Identified information challenges may be relatively easily overcome by making better use of available information, while other challenges such as development of consistent baselines of core data and a possible re-prioritization of water-environmental monitoring programs may be both difficult and costly.
4

Disseny d'un sistema d'informació ambiental pel seu ús en els processos de gestió integrada de zones costaneres. Aplicació a la Costa Brava

Mora Crespo, Joan 28 October 2004 (has links)
El present estudi té com a principal objectiu el disseny d'un Sistema d'informació Ambiental(SIA). El principal instrument utilitzat per obtenir la informació amb aquest sistema d'informació són els indicadors. Concretament, el SIA ha estat desenvolupat per ser usat en els processos de gestió integrada de zones costaneres (ICZM), de manera que els indicadors empratsintenten ser representatius dels principals elements econòmics, socials i ambientals queinteractuen en les zones costaneres. El procés de disseny d'aquest Sistema d'InformacióAmbiental es pot dividir en diferents sub-objectius:- el primer consisteix en la recerca de tota la informació socio-econòmica i ambiental actual que es consideri necessària. A banda d'aquesta informació s'ha de generar aquella informació que es consideri important per a la gestió i per la comprensió de la situació actual dels sistemes naturals que es troben a la zona d'estudi.- el segon objectiu és la creació del sistema d'indicadors, dividits en: sectorials, de gestiói de condició. Cada indicador ha de tenir un protocol pel seu càlcul i la seva futurarepetició. Un cop mesurats es representaran gràficament per facil itar la sevainterpretació.- el darrer objectiu consisteix en l'anàlisi i en la síntesi dels resultats obtinguts del càlculdels indicadors. Per la síntesi s'utilitza una anàlisi de components principals que estradueix en un conjunt d'indicadors estratègics. Per l'anàlisi s'utilitza l'equació I.P.A.T.que ens ha de permetre relacionar els resultats obtinguts mitjançant els indicadors ambla sostenibilitat territorial de l'àrea d'estudi.- Finalment, de les conclusions s'han de despendre una sèrie de recomanacions per alsgestors i per l'empresa privada, amb la finalitat d'assolir una gestió més sostenible de lazona costanera.En el disseny del SIA i per tal d'assolir els diferents objectius, s'ha utilitzat el modelconceptual D-P.S.I.R. d'anàlisi dels conductors "drivers" (D), les pressions (P), els estats (S),els impactes (I) i les respostes (R). Aquest model està àmpliament reconegut per la OCDE i altres organitzacions internacionals, i és emprat en l'anàlisi de la problemàtica ambiental.

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