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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.
11

Outils de gestion de la pollution phytosanitaire diffuse au niveau d'un territoire : cas d'application zone humide Ramsar de la Merja Zerga au Maroc

Ayadi-Hajji, Habiba 12 December 2013 (has links) (PDF)
La pollution phytosanitaire diffuse est un enjeu majeur à l'interface de l'agriculture et l'environnement. Ses conséquences sur la santé humaine et l'environnement ont poussé la société à interroger les scientifiques sur les outils d'aide à la décision et d'évaluation adéquats. Dans cette perspective, ce travail interdisciplinaire entre géographie et agronomie porte sur la mise en place d'outils pour une gestion concertée de la pollution phytosanitaire diffuse au niveau d'un territoire: la Merja Zerga au Maroc. Dans le cadre d'une approche participative, ce travail est basé sur l'utilisation conjointe et interactive de plusieurs outils interdisciplinaires: les Systèmes d'Informations Géographiques (SIG), l'indicateur de fréquence de traitement (IFT), un indicateur de risque de toxicité sur la santé de l'applicateur (IRSA) et environnementale (IRTE), une plate-forme technico-économique et un jeu de simulation par lesquels sont exploitées les données issues de la recherche bibliographique, des relevés de terrain et d'enquêtes auprès des acteurs du territoire. Les résultats de l'analyse multi-échelle du territoire ont permis de mettre en exergue la construction de l'espace du territoire de la Merja Zerga, les conséquences des pratiques phytosanitaires sur la santé humaine de l'applicateur et l'environnement, l'iniquité spatiale et sociale en terme de propension à polluer. En dépassant la simple évaluation, cette approche basée sur des outils génériques, constitue une étape originale pour la mise en place de stratégies de gestion des pesticides sans nuire à la viabilité économique des exploitations agricoles.
12

Carbon Budgets of Created Riverine Wetlands in the Midwestern USA

Waletzko, Evan James 06 June 2014 (has links)
No description available.
13

South Africa’s response in fulfilling her obligations to meet the legal measures of wetland conservation and wise use

Lemine, Bramley Jemain January 2018 (has links)
Thesis (MTech (Environmental Management))--Cape Peninsula University of Technology, 2018. / South Africa is a signatory to the Convention on Wetlands of International Importance especially as Waterfowl Habitat of 1971 (referred to as the Ramsar Convention), which is an international convention making provision for protection and wise use of wetlands. Article 3 of the Ramsar Convention requires signatories to formulate and implement their planning to promote wise use of wetlands within their jurisdiction. “Wise use of wetlands” is defined as “the maintenance of their ecological character, achieved through the implementation of ecosystem approaches, within the context of sustainable development” (Birnie & Boyle, 2009: 674). The concept of wise use has been interpreted to mean sustainable development (de Klemm & Shine, 1999: 47; Birnie & Boyle, 2009: 49; Kiss & Shelton, 2007: 93; Birnie & Boyle, 2009: 674; Sands, 2003: 604), as it pertains to wetlands. Having said this, the National Environmental Management Act 107 of 1998 (NEMA) sets out principles of sustainable development that every organ of state must apply in the execution of their duties. Due to the wise use-sustainable development link, two NEMA principles have been considered to form the basis of this study, i.e. sections 2(4)(l) and 2(4)(r). The first principle places an obligation upon the state to ensure that there is intergovernmental coordination and harmonisation of policies, legislation and action relating to the environment (read to include a wetland); and the second principle is to ensure that specific attention in the management and planning are had to wetlands. Ironically, factors that are identified as hindering wise use include, but are not limited to: conflicting and incomplete sectoral law, absence of monitoring procedures, the absence of legal measures for environmental management of water quantity and quality. Therefore, an analysis will be undertaken to determine the extent to which South Africa’s legislative framework regulating wetland conservation is fulfilling the requirements for the promotion of wise use, through these two principles. Focus was had to environmental and related legislation, policies and regulations that promote and/or constrain wetland conservation and wise use. This study identifies the flaws within the law; and proposes streamlining and, where apposite, amendments to the existing legislative framework regulating wetlands in order for South Africa to fulfil her obligations.

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