This book contains a selection of papers presented at the first International Symposium on Windbreak Technology, summarising the available worldwide literature on windbreaks and the response, both positive and negative, to wind protection. State-of-the-art information is presented on general design criteria, and principles of planting and establishment for a wide range of conditions and objectives. It provides descriptive information of tree and shrub species for arid, semi-arid, temperate and tropical areas, and their use in windbreaks.

The Great Depression of the 1930s set the stage for "the greatest afforestation program the world has known" when the Forest Service was given the task of planting shelterbelts from Texas to Canada in a zone a hundred miles wide. The venture, known as the Prairie States Forestry Project or the Shelterbelt Project, resulted in the planting of millions of trees between 1834 and 1942. Today, the millions of trees planted in the Depression stand as a monument to President Franklin D. Roosevelt, who originated the idea of the project, and to friends of environmental concern everywhere. Not all the trees are living, and many of the belts have been removed in the interest of technological advances in Plains' agriculture or the farmer's decision to increase his planting acreage. Conservationists and spokesmen in government have become alarmed by the destruction of the belts. The time has come to re-evaluate the importance of trees to the environment of the prairies and plains of mid-America, for recent droughts again created a need to plant trees to combat erosion and to make the region more hospitable to the people who live there and who provide the world with its bread.

This volume is a collection of 31 multi-authored, rigorously peer-reviewed chapters on different aspects of agroforestry, produced as a compendium on the occasion of the 1st World Congress of Agroforestry, June 2004. Its contenst include a tropical-temperate mix of topics, which is a rare feature of a publication of this nature. Several of the chapters are on topics that have not been discussed or described much in agroforestry literature. A third feature is that some of the authors, though well known in their own disciplinary areas, are somewhat new to agroforestry; the perceptions and outlooks of these scholars who are relatively uninfluenced by the past happenings in agroforestry gives a whole new dimension to agroforestry and broadens the scope of the subject. Finally, rather than just reviewing and summarizing past work, most chapters take the extra effort in attempting to outline the next steps. Agroforestry stands to gain enormously from the infusion of these new and different ideas and bold initiatives, thus making the title "New Vistas" quite justifiable.

Wind energy’s bestselling textbook- fully revised. This must-have second edition includes up-to-date data, diagrams, illustrations and thorough new material on: the fundamentals of wind turbine aerodynamics; wind turbine testing and modelling; wind turbine design standards; offshore wind energy; special purpose applications, such as energy storage and fuel production. Fifty additional homework problems and a new appendix on data processing make this comprehensive edition perfect for engineering students. This book offers a complete examination of one of the most promising sources of renewable energy and is a great introduction to this cross-disciplinary field for practising engineers. “provides a wealth of information and is an excellent reference book for people interested in the subject of wind energy.” (IEEE Power & Energy Magazine, November/December 2003) “deserves a place in the library of every university and college where renewable energy is taught.” (The International Journal of Electrical Engineering Education, Vol.41, No.2 April 2004) “a very comprehensive and well-organized treatment of the current status of wind power.” (Choice, Vol. 40, No. 4, December 2002)