Subregiones fitoclimáticas de España PDF Download

Author: José Luis Allué Andrade
Publisher:
ISBN:
Category : Bioclimatology
Languages : es
Pages : 64

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Res. en español, francés e inglés.

Author: R.N. Kaul
Publisher: Springer Science & Business Media
ISBN: 9401033501
Category : Technology & Engineering
Languages : en
Pages : 444

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The increasing world population is already causing intensive pressure on the most productive areas of the earth's surface. Hopes of improved living standards, if realised, will increase the pressure still further. The need to make better use of less productive areas thus becomes an urgent priority for human endeavour. In this respect, the arid and semi-arid regions of the world, occupying about 11,000 million acres or 4,500 million hectares, roughly one third of the tota11and surface, pose a constant challenge to man's technological skill. Though the possibilities of economic use of the real deserts are inherently limited, there remain vast areas with less extreme conditions where sustained research is capable of yielding substantial gains in pro ductivity. The problem is so large that it can be solved only by the coordinated efforts of workers in many countries and many disciplines. Forestry has a special part to play, not only for its potential value for wood production but still more for the beneficial effects of shelter from desiccating winds which so commonly accompany arid conditions. Mr. KA UL is to be congratulated on his initiative to pool the results of research on afforestation in arid zones in many parts of the world, and to present them in a single volume in the form of separate monographs.

Author: John N. Owens
Publisher: EOLSS Publications
ISBN: 1905839383
Category :
Languages : en
Pages : 442

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Forests and Forest Plants is a component of Encyclopedia of Food and Agricultural Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. Forests are an essential part of Earth's life support systems. Forest resources are essential for humankind. They provide both vital goods and services. They provide food, fuel, shelter, soil and water protection, and filter the air we breathe. This publication on Forest and Forest Plants provides the user with such information as to create an awareness of the value of our forestlands and the products and environmental services they provide. The three volumes on Forests and Forest Plants are organized starting with first the necessity of : the World's Forest Resources – including classification and distribution of forest, urban forestry and agroforestry; Important Tree Species including trees in reclamation and arid zone forestry; Forests and Forest Products including wood and non word products; the Role of Forests in the Biosphere – preserving biological diversity, functions in the hydrological cycle, etc.; and Conservation and Breeding of Forest Trees – what is being done to improve our forest resources - silviculture, tree nurseries, and forest protection. The theme Forest and Forest Plants has led to the conclusion that there are substantial difficulties in matching environmental concerns and sustainability with an ever-increasing world population. Thus there is a tension between maximizing for food, wood and production on the one hand and implementing sustainable development and environmental protection on the other. These three volumes are aimed at the following five major target audiences: University and College Students Educators, Professional Practitioners, Research Personnel and Policy Analysts, Managers, and Decision Makers, NGOs and GOs.

Author: Bi-Cheng Dong
Publisher: Frontiers Media SA
ISBN: 2832514456
Category : Science
Languages : en
Pages : 138

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Author: Eugenio Martinez-Falero
Publisher: CRC Press
ISBN: 1466569255
Category : Mathematics
Languages : en
Pages : 625

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Forest management has evolved from a mercantilist view to a multi-functional one that integrates economic, social, and ecological aspects. However, the issue of sustainability is not yet resolved. Quantitative Techniques in Participatory Forest Management brings together global research in three areas of application: inventory of the forest variables that determine the main environmental indices, description and design of new environmental indices, and the application of sustainability indices for regional implementations. All these quantitative techniques create the basis for the development of scientific methodologies of participatory sustainable forest management.

Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 774

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Author: Ravindera Nath Kaul
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 458

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Author: Unesco
Publisher: paris : unesco
ISBN:
Category : Arid regions
Languages : en
Pages : 64

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Author:
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 488

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Author: Regional Winter Cereal Workshop
Publisher:
ISBN:
Category : Barley
Languages : en
Pages : 736

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