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Author: Hans Jenny Publisher: Springer Science & Business Media ISBN: 1461261120 Category : Technology & Engineering Languages : en Pages : 392
Book Description
change is simply described by the rate of income and rate of loss. Our home's energy budget, our firm's inventory, our nation's debt, and humanity's numbers all have accounts that change at rates that are equal to the inputs minus the outputs. Jenny's "system view" of the soil was carried into the fertile fields of Midwestern American prairies from the laboratories of Switzerland in the late 1920s. Jenny's rate equations provided the other paradigm or world view that, I recall, brought us to the threshold of systems ecology as it later evolved in the second half of the twentieth century. As if world renown in the specialties of pedology and soil chemistry were not enough for one lifetime, excerpts below remind us that Hans Jenny has also been a perceptive outdoor field ecologist since his early Alpine expeditions with Braun Blanquet in the mid 1920s. Jenny's ecosystem studies in the pygmy forest, a further classic example of a soil-plant system "run down" over hundreds of thousands of years since its origin, continue to occupy some of the vigorous retirement time near his farm in Mendocino County. But each specific, quantitative case study, and each research area conserved (with additional hard work) for further study by future generations, fits into Jenny's coherent world view. It is that view, and its legacies of discovery and of tangible landscape preserves, which we are privileged to share with their originator in this volume.
Author: Hans Jenny Publisher: Springer Science & Business Media ISBN: 1461261120 Category : Technology & Engineering Languages : en Pages : 392
Book Description
change is simply described by the rate of income and rate of loss. Our home's energy budget, our firm's inventory, our nation's debt, and humanity's numbers all have accounts that change at rates that are equal to the inputs minus the outputs. Jenny's "system view" of the soil was carried into the fertile fields of Midwestern American prairies from the laboratories of Switzerland in the late 1920s. Jenny's rate equations provided the other paradigm or world view that, I recall, brought us to the threshold of systems ecology as it later evolved in the second half of the twentieth century. As if world renown in the specialties of pedology and soil chemistry were not enough for one lifetime, excerpts below remind us that Hans Jenny has also been a perceptive outdoor field ecologist since his early Alpine expeditions with Braun Blanquet in the mid 1920s. Jenny's ecosystem studies in the pygmy forest, a further classic example of a soil-plant system "run down" over hundreds of thousands of years since its origin, continue to occupy some of the vigorous retirement time near his farm in Mendocino County. But each specific, quantitative case study, and each research area conserved (with additional hard work) for further study by future generations, fits into Jenny's coherent world view. It is that view, and its legacies of discovery and of tangible landscape preserves, which we are privileged to share with their originator in this volume.
Author: Vance T. Holliday Publisher: Oxford University Press ISBN: 0195149653 Category : Science Languages : en Pages : 465
Book Description
Soils, invaluable indicators of the nature and history of the physical and human landscape, have strongly influenced the cultural record left to archaeologists. In this book, the author addresses each of these issues in terms of fundamentals as well as in field case histories from all over the world.
Author: Delwyn G. Fredlund Publisher: John Wiley & Sons ISBN: 047185008X Category : Technology & Engineering Languages : en Pages : 542
Book Description
The principles and concepts for unsaturated soils are developed as extensions of saturated soils. Addresses problems where soils have a matric suction or where pore-water pressure is negative. Covers theory, measurement and use of the fundamental properties of unsaturated soils--permeability, shear strength and volume change. Includes a significant amount of case studies.
Author: Helmut Kohnke Publisher: Waveland Press ISBN: 1478609303 Category : Technology & Engineering Languages : en Pages : 173
Book Description
A concise, inexpensive treatment! Soil Science Simplified, 4/E was written to acquaint students with the basic concepts and scientific principles of soils without the burden of an extensive study. This useful, well-priced handbook includes discussions of soil classification, soil morphology, and soil and the environment. In addition, a chapter on soil surveys helps readers understand soil resources and apply the information presented in soil surveys to managing the soil environment. Outstanding features: 1) provides essential coverage of factors of soil formation; 2) outlines the most current principles of soil taxonomy; 3) provides an assortment of helpful tables, maps, and line drawings; 4) includes an expanded glossary.
Author: Albert Howard Publisher: University Press of Kentucky ISBN: 0813132096 Category : Nature Languages : en Pages : 357
Book Description
During his years as a scientist working for the British government in India, Sir Albert Howard conceived of and refined the principles of organic agriculture. Howard’s The Soil and Health became a seminal and inspirational text in the organic movement soon after its publication in 1945. The Soil and Health argues that industrial agriculture, emergent in Howard’s era and dominant today, disrupts the delicate balance of nature and irrevocably robs the soil of its fertility. Howard’s classic treatise links the burgeoning health crises facing crops, livestock, and humanity to this radical degradation of the Earth’s soil. His message—that we must respect and restore the health of the soil for the benefit of future generations—still resonates among those who are concerned about the effects of chemically enhanced agriculture.
Author: Hans Jenny Publisher: Courier Corporation ISBN: 0486681289 Category : Science Languages : en Pages : 322
Book Description
Masterpiece offers a detailed discussion of the nature of the earth's terrestrial environment, and a method of subdividing and studying it. 1941 edition.
Author: Pedro A. Sanchez Publisher: Cambridge University Press ISBN: 1107176050 Category : Business & Economics Languages : en Pages : 685
Book Description
Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
Author: Hans Jenny
Author: Hans Jenny
Author: Vance T. Holliday
Author: Delwyn G. Fredlund
Author: Helmut Kohnke
Author: United States. Great Plains Committee
Author: United States. Great Plains Committee
Author: Albert Howard
Author: Hans Jenny
Author: Pedro A. Sanchez
Author: H.W. Wilson Company