Joao S. Pereira – författare
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2 produkter
2 produkter
Del 166 - NATO Science Series E:
Biomass Production by Fast-Growing Trees
Inbunden, Engelska, 1989
1 606 kr
Skickas inom 10-15 vardagar
Even though most of the biomass of the planet is in forests, we live in a world where wood as a raw material and its products are increasingly scarce. This is particularly so in important areas such as the European Community, which is far from self-sufficient in terms of wood. In recent years the need to intensify forest production and, in some cases, to uti lize abandoned agricultural land for forestry has focussed world-wide attention on the economic importance of fast-growing tree plantations. These are usually managed as short "rotations" (growing cycles) of less than 15 years, often for the production of industrial raw materials or biomass for energy. Under the designation of fast-growing tree plantations, or short rotation silviculture, one may find ecosystems managed for different economic objectives, with different intensities of technical intervention and different levels of productivity. They may include any of a wide range of species grown under various environmental conditions. A common factor, however, is the greater possibility that exists, relative to conventional forestry, for manipulation of both the environment and the genetics of the trees.
Inbunden, Engelska, 2009
1 306 kr
Tillfälligt slut
This title offers scientific and practical information on cork oak woodlands and the cultural systems dependent on them. Cork oak has historically been an important species in the western Mediterranean - ecologically as a canopy or 'framework' tree in natural woodlands, and culturally as an economically valuable resource that underpins local economies. Both the natural woodlands and the derived cultural systems are experiencing rapid change, and whether or not they are resilient enough to adapt to that change is an open question. "Cork Oak Woodlands on the Edge" provides a synthesis of the most up-to-date, scientific, and practical information on the management of cork oak woodlands and the cultural systems that depend on cork oak. In addition, "Cork Oak Woodlands on the Edge" offers ten site profiles written by local experts that present an in-depth vision of cork oak woodlands across a range of biophysical, historical, and cultural contexts, with sixteen pages of full-colour photos that illustrate the tree, agro-silvopastoral systems, products, resident biodiversity, and more."Cork Oak Woodlands on the Edge" is an important book for anyone interested in the future of cork oak woodlands, or in the management of cultural landscapes and their associated land-use systems. In a changing world full of risks and surprises, it represents an excellent example of a multidisciplinary and holistic approach to studying, managing, and restoring an ecosystem, and will serve as a guide for other studies of this kind. Co-sponsored by the Society for Ecological Restoration International and Island Press, this series offers a foundation of practical knowledge and scientific insight that will help ecological restoration become the powerful reparative and healing tool that the world needs.