Carbon-Nitrogen-Sulfur: Human Interference in Grand Biospheric Cycles PDF

Vaclav Smil ist derzeit Distinguished Professor an der Fakultät für Umwelt an der Universität von Manitoba in Winnipeg, Kanada. Sein Aufbaustudium absolvierte er an der Fakultät für Naturwissenschaften der Universität Carolinum in Prag und am College of Earth and Mineral Sciences der Pennsylvania State University. Seine interdisziplinären Forschungsinteressen umfassen ein breites Gebiet von Energie-, Umwelt-, Lebensmittel-, Bevölkerungs-, Wirtschafts-, historischen und öffentlichen Politikstudien, und er hatte diese Ansätze auch auf Energie-, Lebensmittel- und Umweltangelegenheiten Chinas angewendet.

Er ist Fellow der Royal Society of Canada (Science Academy) und der erste Nichtamerikaner, der den American Association for the Advancement of Science Award for Public Understanding of Science and Technology erhielt. Er war ein eingeladener Redner bei mehr als 250 Konferenzen und Workshops in den USA, Kanada, Europa, Asien und Afrika, hielt Vorträge an vielen Universitäten in Nordamerika, Europa und Ostasien und arbeitete als Berater für viele US-, EU- und internationale Institutionen. Seine Frau Eva ist Ärztin und sein Sohn David ist organischer Synthesechemiker.

Carbon-Nitrogen-Sulfur: Human Interference in Grand Biospheric Cycles pdf von Vaclav Smil

ica, I considered myself an old hand: when I started to study the environment of the North Bohemian region in 1963, the ecosystemic changes and health effects result­ ing from extremely high concentrations and deposition of sulfurous and nitrogenous air pollutants and particulate matter could not be ignored. When I returned to the area in 1966 to work there for nearly three years as a consultant in energy and environmental affairs, I came to realize the difficulties of efficiently controlling the problem. Hiking on the crest of the Ore Mountains overlooking the valley, I saw much destruction and degradation of coniferous plantings-but I was also repeatedly surprised by the contrast of the withering tops and stunted dried-out growth of spruces and firs with the magnificent beech trees and the healthy understory of shrubs and wild flowers. I recall this impressive lesson of ecosystemic vulnerability and resistance every time I read sweeping generalizations about the environmental effects of acid deposition. At the same time, in the second half of the 1960s, I was introduced by a friend, an engineer working in analytical chemistry and biochemistry, to some of the mysteries of enzymes; this led me to nitrogenase, one of the most incredible sub­ stances on this planet, and to an interest in various aspects of the nitrogen cycle, which was further strengthened by my later work on the energy cost of crop production, involving inevitable comparisons between natural nitrogen fixation and Haber-Bosch ammonia synthesis.