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Author: China International Famine Relief Commission
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Book Description
Author: China International Famine Relief Commission
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Book Description
Author: Yitzchak Gutterman
Publisher: Springer Science & Business Media
ISBN: 3642756980
Category : Science
Languages : en
Pages : 262
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Book Description
During germination, the most resistant stage of the life cycle - the seed - changes to the most sensitive stage, namely the seedling. Therefore, in desert plant species seed dispersal and subsequent germination in the optimum time an place place are particularly critical parameters. Discussed here are the ways and means by which desert plants have adapted through the course of evolution to their extreme environment. Two such strategies which have evolved are a) plants with relatively large and protected seeds which germinate when the chance of seedling survival is high and the risk relatively low or b) those with an opportunistic strategy: minute seeds which germinate after low rainfall under high risk for seedling survival if additional rain does not follow. Most species adopt a combination of the two mechanisms. Species have adapted both genotypically and phenotypically, both aspects of which are also discussed in this thorough text. The reader is provided with a good understanding of the complex influences on each seed traced through from initial development to germination stage regarding germination preparation and subsequent survival.
Author: H. Lieth
Publisher: Springer Science & Business Media
ISBN: 364251863X
Category : Science
Languages : en
Pages : 443
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Book Description
The pulse of life with the seasons is a classic theme of biology, equally cap turing every man's curiosity about early and late milestones of every year's cycle and the critical physiologist's inquiry into life's subtle signals and responses. Natural historians of ancient and renaissance time as well as today have charted the commonsense facts behind inspired traditions of poetry and practical rules for growing food and fiber. This volume brings together several ways of organizing the basic principles of phenology. These find order in the otherwise overwhelming mass of detail that captures our fleeting attention, like the daily newspaper, and then tends to fade into the overstuffed archives of history. Is this order so obvious and understandable that there is no longer any scien tific challenge to "phenology" as a tradition? Or does apparent simplicity mask a complex and ultimately baffling obstacle to the understanding of seasonality in even those few indicator plants and animals we know best, not to men tion the less known species or races making up the rest of each major land scape unit or ecosystem? Denying both these hasty opinions, we think that this volume well illustrates a range of questions and answers-from soundly established (but not trivial) doctrine to exciting inquiry about how ecosystems are organized.
Author: National Research Council
Publisher: National Academies Press
ISBN: 030904684X
Category : Technology & Engineering
Languages : en
Pages : 231
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Book Description
This volume describes one of the most extensive grassland ecosystems and the efforts of Chinese scientists to understand it. Leading Chinese scientists attribute the decline in China's grasslands to overgrazing and excessive cultivation of marginal areas and discuss measures to limit the damage. The book gives its view on the Chinese approach to the study of grasslands and the relevance of this activity in China to global scientific concerns.
Author: Rozman
Publisher: Simon and Schuster
ISBN: 9780029273609
Category : History
Languages : en
Pages : 584
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Book Description
In the Modernization of China, an interdisciplinary team of scholars collaborate closely to provide the first systematic, integrated analysis of China in transformation--from an agrarian-based to an urbanized and industrialized society. Moving from the legacy of the Ming and Ch'ing dynasties to the reforms and revolutions of the 20th century, the authors seek reasons for China's inability to achieve rapid, steady growth during a 200 year-long struggle to modernize. They examine the changing shape of Chinese society: the role of the state in local politics; military affairs; economics; the development of the educational system; changes in family; population, and settlement patterns; science and technology; world views and foreign relations. And they make frequent comparisons between China's experience with growth and that of two other latecomers to modernization, Japan and Russia. The result is a book that brings much-needed clarity and perspective to our understanding of China, and the way a great civilization attempts to meet the challenge of modernity.
Author: De-Yuan Hong
Publisher: Cambridge University Press
ISBN: 1316195155
Category : Science
Languages : en
Pages : 490
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Book Description
The flora of China is astonishing in its diversity. With 32,500 species of vascular plants, over fifty per cent of which are endemic, it has more botanical variety than anywhere else in the world and provides unbroken connections to all its landscapes - from tropical to subtropical, temperate and boreal forests. This book tells the story of the plants of China: from the evolution of the flora through time to the survey of the bioclimatic zones, soundly based on chapters with information on climate, physical geography and soils. The history of botany and its study are also examined, with chapters dedicated to forestry, medicinal plants and ornamentals, with the changing flora, aliens, extinction and conservation also discussed. An essential read for years to come, The Plants of China shows that an understanding of the flora of China is crucial to interpreting plant evolution and fossil history elsewhere in the world.
Author:
Publisher:
ISBN:
Category : Germplasm resources, Plant
Languages : en
Pages : 496
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Book Description
Author: Raoudha Abdellaoui
Publisher: Frontiers Media SA
ISBN: 2832529305
Category : Science
Languages : en
Pages : 225
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Book Description
Author: Fanghao Wan
Publisher: Springer
ISBN: 9402409483
Category : Science
Languages : en
Pages : 369
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Book Description
The book discusses invasive-species problems in agriculture, forests and aquatic ecosystems, highlighting the invasive mechanisms and management of the selected invasive species. Biological invasion has become a serious global ecological and economic problem that deserves particular attention from both government officials and scientists. This volume focuses on three key scientific areas: 1) population establishment and spreading mechanisms of the selected invasive species; 2) ecology adaptation, population growth, expansion and evolution of invasive species; and 3) impact of bio-invasion on the ecosystem structure and function at community and ecosystem levels. The presented research will result in techniques for better management of invasive species.
Author: Wenhua Li
Publisher: Taylor & Francis
ISBN: 9789231037849
Category : Political Science
Languages : en
Pages : 464
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Book Description
Concepts, principles, history, classification, structure and function analysis of various models in the same production sector and in different sectors, at different scales, in mountain and dryland ecosystems. The book is aimed primarily at young post-graduate scientists in the disciplines or at agronomy, forestry, animal husbandry, land use management and ecology experts.
