992 resultados para Forests and forestry.


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The objective of this work was to evaluate the internal temperature (IT) of Girolando heifers in integrated crop, livestock (ICLS) and forestry (ICLFS) systems. Trial was carried out at experimental field of Embrapa Rondônia, Porto Velho, Rondônia, Brazil.

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An increase in plantation forestry has been linked to a reduction in streamflows in some catchments. Quantifying the relative contribution of this land-use change on streamflows can be complex when those changes occur during weather extremes such as drought. In this study, the Soil and Water Assessment Tool (SWAT) model was applied to two sub-catchments in south-eastern Australia which have seen the introduction and establishment of plantation land use in the past 15 years, coinciding with severe drought (1997–2009). The models were both manually and auto-calibrated and produced very good fits to observed streamflow data during both calibration (1980–1991) and validation (1992–2009) periods. Sensitivity analyses indicated that the models were most sensitive to soil and groundwater parameterisation. Analysis of drought conditions on streamflows showed significant declines from long-term average streamflows, while assessment of baseflow contributions by the models indicated a mix of over- and underestimation depending on catchment and season. The modelled introduction of plantation forestry did not significantly change streamflows for a scenario which did not include the land-use change, suggesting that the modelled land-use change in the catchments was not sufficiently extensive to have an impact on streamflows despite simulating actual rates of change. The SWAT models developed by this study will be invaluable as a basis for future use in regional climate-change studies and for the assessment of land management and land-use change impact on streamflows.

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592 s.

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The Ontario Forest Industries Association (OFIA) was founded in 1944. It is a provincial trade association that represents member companies who produce a wide range of products, including pulp, paper, paperboard, lumber, panelboard, plywood and veneer. The OFIA works with its member companies to address issues of common interest and concern, and communicates these issues to the appropriate government, industrial or business sector. The Ontario Forest Information Service represented the OFIA from 1951 to 1988 as the publishers of their industry periodicals. Bush News was the first periodical published by the Service for the OFIA and ran until 1964, when it was replaced by Ontario Logger. In 1968, the name was changed to The Logger. In 1970, this was replaced by The Forest Scene. This new periodical was a departure from the earlier versions, which had served primarily as an internal communication system for the industry. The Forest Scene adopted a new format and editorial approach, emphasizing outdoor activities, recreation, hunting and fishing, conservation, and forestry operations and methods, thus appealing to a much wider readership. The Forest Scene ceased publication in 1988.

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Una marca de vehicles anuncia que, amb la venda dels seus models, es compromet a plantar prou arbres per fixar el CO2 que els cotxes trauran pel tub d’escapament. Malgrat el que digui la publicitat, el càlcul de l’absorció del gas que fan els arbres resulta una qüestió no gens fàcil d’esbrinar

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En aquest estudi fem un repás dels diferents tipus de boscos de ribera de les comarques gironines, descrivim els processos fluvio-torrencials que motiven l'acció antrópica i, finalment analitzem el cas concret del riu Onyar

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This article makes a revision of the most eminent contributions in Geography in relation to the forest study, starting with principal Spanish geographical journals, congress transactions and other bibliography about forest questions. A selection of the most eminent bibliography has been made paying special attention to three main subjects: forest and forest science history, forest and landscape description, and forest management

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Aquest treball és un resum de la Memòria de Llicenciatura El Bosc, element clau d’un paisatge i d’una comunitat. La seva percepció per part dels pagesos de l’Alta Garrotxa. Assaig metodològic, llegida el 18 de desembre de 1981 a la Universitat Autònoma de Barcelona

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Es presenten unes reflexions sobre els boscos mediterranis i el foc des d’una perspectiva biogeogràfica que posa en relació la vegetació, els factors ambientals i l’acció humana

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Development in Papua New Guinea ... is research into village level issues of logging. In New Britain, nationals are offered royalties for cutting their rainforest. Information about ecology and biodiversity is usually late in coming, and such information to them does not appear to advance their development. This thesis offers the most specific method for dealing with small communities in Papua New Guinea, and confronts the issue of self development. It is posited that all other development must encourage self development in Papua New Guinea. Evidence brought here shows the need to make the Melanesian community central to development strategies.

To accomplish such a strategy, there is a need to consider Melanesian cultures. An explanation of world views ensues. The world views of people of the Pasismanua region, of New Britain's south coast, was compared broadly with Melanesian cultures and Melanesian development in a variety of circumstances. Consequently, the suggestions made are broadly applicable to situations where resources must be well monitored. There are many such situations in Pacific nations, which suggests that the thesis will be of usc to a wide research community.

Since research is grounded in ethnographic as well as other research, this kind of study generates many other research questions, and the research is designed to lead to other studies. Certain aspects of the design become disclosed when the research has progressed. As well, the background of an expatriate researcher is intrusive, and must be mitigated by some form of participation in the host culture. This is a central tenet of the thesis. This participation increases sensitivity to culture and yields a circumspect consideration of the colonial issue. Occupied for many years by colonial powers especially Australia, all New Guinea including West New Britain shows the effects of colonisation. It also shows evidence of the new colonialism of cash-cropping, and of the destruction of biodiversity. This becomes a central theme, as does the position of this researcher as a participant in a global economic culture encroaching on and invited by Papua New Guinea.

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Pós-graduação em Agronomia (Energia na Agricultura) - FCA

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Se evaluó el nivel de conocimiento de la nueva Ley de bosque nativo y fomento forestal que poseen los pequeños propietarios forestales en dos territorios de la Cordillera de Nahuelbuta, en Chile. Para ello, se aplicó una encuesta a 53 personas (10 de las viviendas), que abordó cinco temas centrales: (1) uso del bosque nativo, (2) participación en redes sociales y acceso a la información, (3) conocimiento general de la Ley, (4) conocimiento respecto a la administración y (5) fomento de la Ley. Los resultados mostraron que: (1) el bosque nativo es usado para obtener productos madereros y no madereros, (2) las redes sociales y especialmente la radio son fundamentales para la transferencia de información, (3) tanto el conocimiento general de la Ley como (4) el nivel de conocimiento respecto de la administración de la Ley es insuficiente, y (5) se desconocen los trámites que deben efectuarse para obtener los beneficios de la Ley. Se concluye que: (1) el nivel de conocimiento de la Ley es insuficiente, (2) es fundamental estimular el uso de los instrumentos de esta Ley en la totalidad del territorio, de modo de garantizar el uso sustentable del recurso, y (3) la difusión de los beneficios de la Ley debe considerar las formas de comunicación tradicionales, el nivel de educación y la cultura de los espacios rurales