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Economic instruments for water management | Instrumentos económicos para la gestión del agua Texto completo
2013
Echeverría, Jaime | Cantillo, Bernal
Problems related to water management in Costa Rica have an economic origin. Partly, as a consequence of a natural condition of water richness, as well as the concept of public service with fees that don´t promote neither investment nor efficiency of water resource use. Solutions must be targeted toward the economic conditions generating pollution, little efficiency, and lesser infiltration area. Water social cost regarding its use and pollution must be recognized and paid. The water user fee and pollution fee represent a step forward. A higher application of this kind of instruments will generate profit-benefit to the economy and might encourage the protection of the environment and natural resources. | Los problemas relacionados con la gestión del agua en Costa Rica tienen un origen económico. Parte se debe a una condición natural de riqueza hídrica, parte a un concepto de servicio público al costo con contención de las tarifas que no fomentan la inversión ni la eficiencia en el aprovechamiento. Las soluciones deben atacar las condiciones económicas que generan contaminación, poca eficiencia y menor área de infiltración. El costo social del uso y contaminación del agua debe ser reconocido y pagado. Los cánones de aprovechamiento y vertidos son un buen avance. Una mayor aplicación de este tipo de instrumentos generará beneficios a la economía y ayudará a salvaguardar el ambiente y los recursos naturales.
Mostrar más [+] Menos [-][Water, an urban development resource] | El agua, un recurso del desarrollo urbano
2003
Tura i Camafreita, M.
[Water and crops productivity] | El agua y la productividad de los cultivos
1998
Fereres Castiel, E. (Universidad de Cordoba (Espana). Escuela Tecnica Superior de Ingenieros Agronomos y de Montes)
Saving water with pressurized irrigation systems | [Ahorro de agua con riego presurizado]
1997
Thompson, Thomas L.
Instruccion sobre conservacion de suelos y agua | Teaching soil and water conservation
1967
[Water uptake in swine farms] | Consumo de agua en las explotaciones porcinas
Quiles, A. E-mail:[email protected] | Hevia, M.L.(Universidad de Murcia (España). Facultad de Veterinaria)
[Synthesis of environmental sustainability report: AGUA [Actions for Management and Use of Water] Programme] | Síntesis del informe de sostenibilidad ambiental: Programa AGUA [Actuaciones para la Gestión y Utilización del Agua]
Anón.
CUSTO DA ÁGUA EM PENAFORTE-CE - ÁGUA SUBTERRÂNEA X ÁGUA SUPERFICIAL - Texto completo
2000
Antônio Ferreira Neto | Luilson Tarcisio Leal e Sá | Osvaldo Pereira Sobrinho | José Murilo Pontes Santos
O presente trabalho em questão apresenta os custo dos recursos hídricos em Penaforte-CE e vantagens de se construir um poço no sedimento ao invés de um açude, comparando-se os custos dos metros cúbicos d’água disponíveis nestes mananciais, quando ambos recebem o mesmo investimento, nas mesmas condições de tempo e de financiamento e considerando-se, também, para cada manancial o devido custeio de operação. Desta forma, verificou-se que o custo do metro cúbico d’água do poço é apenas 11% em relação ao do açude. Além do mais, o poço apresenta as seguintes vantagens: oferta d’água permanente, independentemente de haver inverno; água sem maiores riscos de poluição / contaminação; maior volume de oferta; garantia de 100%; menor custo de tratamento, quando for o caso; economia com tratamento de doenças causadas por veiculação hídrica; e preservação das características ambientais, sem necessidade de uso de maiores áreas.
Mostrar más [+] Menos [-]Revue: Gestion de l’eau souterraine et interaction eau souterraine/eau de surface dans le contexte de la politique sud-africaine de l′eau Revisión: Gestión de agua subterránea e interacción agua subterránea/agua superficial en el contexto de la política del agua de Sudáfrica Revisão: Gestão da água subterrânea e da interacção água subterrânea/água superficial no contexto da política Sul-Africana para a água | Review: Groundwater management and groundwater/surface-water interaction in the context of South African water policy Texto completo
2012
Levy, Jonathan | Xu, Yongxin
Groundwater/surface-water interaction is receiving increasing focus in Africa due to its importance to ecologic systems and sustainability. In South Africa’s 1998 National Water Act (NWA), water-use licenses, including groundwater, are granted only after defining the Reserve, the amount of water needed to supply basic human needs and preserve some ecological integrity. Accurate quantification of groundwater contributions to ecosystems for successful implementation of the NWA proves challenging; many of South Africa’s aquifers are in heterogeneous and anisotropic fractured-rock settings. This paper reviews the current conceptualizations and investigative approaches regarding groundwater/surface-water interactions in the context of South African policies. Some selected pitfall experiences are emphasized. The most common approach in South Africa is estimation of average annual fluxes at the scale of fourth-order catchments (∼500 km2) with baseflow separation techniques and then subtracting the groundwater discharge rate from the recharge rate. This approach might be a good start, but it ignores spatial and temporal variability, potentially missing local impacts associated with production-well placement. As South Africa’s NWA has already been emulated in many countries including Zambia, Zimbabwe and Kenya, the successes and failures of the South African experience dealing with the groundwater/surface-water interaction will be analyzed to guide future policy directions.
Mostrar más [+] Menos [-]El viñedo en Castilla-La Mancha ante el siglo XXI
1998
Montero Riquelme, Francisco José | Brasa Ramos, Antonio
