Cycles of Soils

Author: F. J. Stevenson

Publisher: John Wiley & Sons

ISBN: 0471320714

Category: Technology & Engineering

Page: 448

View: 165

An updated edition of the classic work on the inorganic chemistry of soils. * With its companion volume, Humus Chemistry, forms a complete, advanced-level treatment of both organic and inorganic aspects of soil chemistry. * Revised to keep pace with the latest developments in the field. * Provides more in-depth treatment of all topics.
Soil Processes and the Carbon Cycle

Author: Rattan Lal

Publisher: CRC Press

ISBN: 9781351415767

Category: Technology & Engineering

Page: 624

View: 702

World soils contain about 1500 gigatons of organic carbon. This large carbon reserve can increase atmospheric concentrations of CO2 by soil misuse or mismanagement, or it can reverse the 'greenhouse' effect by judicious land use and proper soil management. Soil Processes and the Carbon Cycle describes soil processes and their effects on the global carbon cycle while relating soil properties to soil quality and potential and actual carbon reserves in the soil. In addition, this book deals with modeling the carbon cycle in soil, and with methods of soil carbon determinations.
Soil Fertility Decline in the Tropics

Author: Alfred E. Hartemink

Publisher: CABI

ISBN: 0851998496

Category: Technology & Engineering

Page: 360

View: 378

Wide coverage of soils and perennial cropping systems in the tropicsSynthesis of decades of researchChallenges assumptions on the benefits of plantations for soil fertilityIt is generally assumed that soil fertility decline is widespread in the tropics and that this is largely associated with annual cropping and subsistence farming. In contrast, perennial plant cover (as in plantation agriculture) provides better protection for the soil.This book reviews these concepts, focusing on soil chemical changes under different land-use systems in the tropics. These include perennial crops, annual crops and forest plantations. Two case studies, on sisal plantations in Tanzania and sugar cane in Papua New Guinea, are presented for detailed analysis. The author demonstrates that soil fertility decline is also a problem on plantations.
The Changing Carbon Cycle

Author: John R. Trabalka

Publisher: Springer Science & Business Media

ISBN: 9781475719154

Category: Science

Page: 592

View: 345

The United States Government, cognizant of its responsibilities to future generations, has been sponsoring research for nine years into the causes, effects, and potential impacts of increased concentrations of carbon dioxide (C0 ) in the atmosphere. Agencies such as the National Science Foun 2 dation, National Oceanic and Atmospheric Administration, and the U.S. Department of Energy (DOE) cooperatively spent about $100 million from FY 1978 through FY 1984 directly on the study of CO • The DOE, as the 2 lead government agency for coordinating the government' s research ef forts, has been responsible for about 60% of these research efforts. William James succinctly defined our purpose when he stated science must be based upon " ... irreducible and stubborn facts." Scientific knowledge can and will reduce the present significant uncertainty sur rounding our understanding of the causes, effects, and potential impacts of increasing atmospheric CO2• We have come far during the past seven years in resolving some underlyinig doubts and in narrowing the ranges of disagreement. Basic concepts have become less murky. Yet, much more must be accomplished; more irreducible and stubborn facts are needed to reduce the uncertainties so that we can improve our knowledge base. Uncertainty can never be reduced to zero. However, with a much improved knowledge base, we will be able to learn, under stand, and be in a position to make decisions.
Greenhouse Gas Sinks

Author: Dave Reay

Publisher: CABI

ISBN: 9781845931902

Category: Science

Page: 290

View: 589

In this first comprehensive handbook of the earth's sinks for greenhouse gases, leading researchers from around the world provide an expert synthesis of current understanding and uncertainties. It will be a valuable resource for students, researchers and practitioners in conservation, ecology and environmental studies.
Building Cities to LAST

Author: Jassen Callender

Publisher: Routledge

ISBN: 9781000510690

Category: Architecture

Page: 278

View: 459

Building Cities to LAST presents the myriad issues of sustainable urbanism in a clear and concise system, and supports holistic thinking about sustainable development in urban environments by providing four broad measures of urban sustainability that differ radically from other, less long-lived patterns: these are Lifecycle, Aesthetics, Scale, and Technology (LAST). This framework for understanding the relationship between these four measures and the essential types of infrastructure—grouped according to the basic human needs of Food, Shelter, Mobility, and Water—is laid out in a simple and easy-to-understand format. These broad measures and infrastructures address the city as a whole and as a recognizable pattern of human activity and, in turn, increase the ability of cities—and the human race—to LAST. This book will find wide readership particularly among students and young practitioners in architecture, urban planning, and landscape architecture.