Principles of Soil Conservation and Management

Author: Humberto Blanco-Canqui
Publisher: Springer Science & Business Media
ISBN: 1402087098
Format: PDF, ePub, Docs
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“Principles of Soil Management and Conservation” comprehensively reviews the state-of-knowledge on soil erosion and management. It discusses in detail soil conservation topics in relation to soil productivity, environment quality, and agronomic production. It addresses the implications of soil erosion with emphasis on global hotspots and synthesizes available from developed and developing countries. It also critically reviews information on no-till management, organic farming, crop residue management for industrial uses, conservation buffers (e.g., grass buffers, agroforestry systems), and the problem of hypoxia in the Gulf of Mexico and in other regions. This book uniquely addresses the global issues including carbon sequestration, net emissions of CO2, and erosion as a sink or source of C under different scenarios of soil management. It also deliberates the implications of the projected global warming on soil erosion and vice versa. The concern about global food security in relation to soil erosion and strategies for confronting the remaining problems in soil management and conservation are specifically addressed. This volume is suitable for both undergraduate and graduate students interested in understanding the principles of soil conservation and management. The book is also useful for practitioners, extension agents, soil conservationists, and policymakers as an important reference material.

Principles of Sustainable Soil Management in Agroecosystems

Author: Rattan Lal
Publisher: CRC Press
ISBN: 1466513462
Format: PDF, ePub, Docs
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With the use of high-level soil management technology, Africa could feed several billion people, yet food production has generally stagnated since the 1960s. No matter how powerful the seed technology, the seedling emerging from it can flourish only in a healthy soil. Accordingly, crop yields in Africa, South Asia, and the Caribbean could be doubled or tripled through adoption of technologies based on laws of sustainable soil management. Principles of Sustainable Soil Management in Agroecosystems describes the application of these laws to enhance ecosystem services while restoring degraded soils and promoting sustainable use. With chapters contributed by world-class soil scientists, ecologists, and social scientists, this book outlines critical changes in management of agricultural soils necessary to achieve food security and meet the food demands of the present and projected future population. These changes include conversion to no-till and conservation agriculture; adoption of strategies of integrated nutrient management, water harvesting, and use of drip sub-irrigation; complex cropping/farming systems such as cover cropping and agroforestry; and use of nano-enhanced fertilizers. The book is based on the premise that it is not possible to extract more from a soil than what is put into it without degrading its quality. The strategy is to replace what is removed, respond wisely to what is changed, and be pro-active to what may happen because of natural and anthropogenic perturbations. The chapters, which exemplify these ideas, cover a range of topics including organic farming, soil fertility, crop-symbiotic soil microbiota, human-driven soil degradation, soil degradation and restoration, carbon sink capacity of soils, soil renewal and sustainability, and the marginality principle.

Laborhandbuch f r die Untersuchung von Wasser Abwasser und Boden

Author: Hans Hermann Rump
Publisher: Wiley-VCH
ISBN: 9783527288885
Format: PDF, Docs
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Das bewährte Laborhandbuch jetzt in der dritten Auflage! Es wurde umfassend überarbeitet und auf den neuesten Stand gebracht. Neu sind jetzt insbesondere: - Methoden zur Bestimmung von AOX, TOC und DOC - Leuchtbakterienabwassertest - erweiterte Darstellung der Probenvorbereitung für die Bodenuntersuchung - ausführliche Darstellung von Umweltschutzmaßnahmen im Labor Wie bisher lassen sich alle beschriebenen Untersuchungsmethoden direkt praktisch anwenden. Ergänzende Literatur ist dafür nicht erforderlich. Alle Methoden sind erprobt und entsprechen dem Stand der Technik. Die Beschreibung der Analyseverfahren enthält auch Maßnahmen zur Arbeitssicherheit und zum Umweltschutz. "Man kann das Buch jedem Auszubildenden und Studenten empfehlen, [...] aber auch dem Praktiker, für den das kurz gefaßte Laborhandbuch eine wertvolle Hilfe bei der täglichen Arbeit bedeutet." Fresenius Zeitschrift für Analytische Chemie

Soil Physics

Author: T. J. Marshall
Publisher: Cambridge University Press
ISBN: 9780521457668
Format: PDF, ePub, Docs
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Now in its third edition, this textbook gives a comprehensive account of soil physics with emphasis on field applications for students and research workers engaged in water resources studies, soil sciences, and plant sciences. The authors have added chapters on soil erosion, conservation, and the role of soil in affecting water quality to this new edition. The book gives an account of how water influences the structure and strength of soil; how plants absorb water from soils; how water from rain and irrigation enters the soil and flows through it to contribute to stream flow and flow in artificial drains; how soluble salts and chemical pollutants are transported; how soils are eroded by water and wind; and how the evaporation rate from the land surface is influenced by soil water supply, the nature of the plant cover and the evaporative power of the atmosphere. This book will be useful to students and research workers in environmental sciences, hydrology, agriculture, soil science, and civil engineering.

Der stumme Fr hling

Author: Rachel Carson
Publisher: C.H.Beck
ISBN: 3406704220
Format: PDF, Docs
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Der stumme Frühling erschien erstmals 1962. Der Titel bezieht sich auf das eingangs erzählte Märchen von der blühenden Stadt, in der sich eine seltsame, schleichende Seuche ausbreitet … Das spannend geschriebene Sachbuch wirkte bei seinem Erscheinen wie ein Alarmsignal und avancierte rasch zur Bibel der damals entstehendenÖkologie-Bewegung. ZumerstenMal wurde hier in eindringlichem Appell die Fragwürdigkeit des chemischen Pflanzenschutzes dargelegt. An einer Fülle von Tatsachen machte Rachel Carson seine schädlichen Auswirkungen auf die Natur und die Menschen deutlich. Ihre Warnungen haben seither nichts von ihrer Aktualität verloren.