A Comparison of the Nutrient Content of Rocky Mountain Douglas-fir and Ponderosa Pine Trees
Author: James Lindow Clayton
Publisher:
Published: 1980
Total Pages: 16
ISBN-13:
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Author: James Lindow Clayton
Publisher:
Published: 1980
Total Pages: 16
ISBN-13:
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Publisher:
Published: 1999
Total Pages: 38
ISBN-13:
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Publisher:
Published: 2007-09
Total Pages: 140
ISBN-13:
DOWNLOAD EBOOKBackpacker brings the outdoors straight to the reader's doorstep, inspiring and enabling them to go more places and enjoy nature more often. The authority on active adventure, Backpacker is the world's first GPS-enabled magazine, and the only magazine whose editors personally test the hiking trails, camping gear, and survival tips they publish. Backpacker's Editors' Choice Awards, an industry honor recognizing design, feature and product innovation, has become the gold standard against which all other outdoor-industry awards are measured.
Author: Brain F. Chabot
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 704
ISBN-13: 9400948301
DOWNLOAD EBOOKAlthough, as W.D. Billings notes in his chapter in this book. the development of physiological ecology can be traced back to the very beginnings of the study of ecology it is clear that the modern development of this field in North America is due in the large part to the efforts of Billings alone. The foundation that Billings laid in the late 1950s came from his own studies on deserts and subsequently arctic and alpine plants, and also from his enormous success in instilling enthusiasm for the field in the numerous students attracted to the plant ecology program at Duke University. Billings' own studies provided the model for subsequent work in this field. Physiological techniques. normally confined to the laboratory. were brought into the field to examine processes under natural environmental conditions. These field studies were accompanied by experiments under controlled conditions where the relative impact of various factors could be assessed and further where genetic as opposed to environmental influences could be separated. This blending of field and laboratory approaches promoted the design of experiments which were of direct relevance to understanding the distribution and abundance of plants in nature. Physiological mechanisms were studied and assessed in the context of the functioning of plants under natural conditions rather than as an end in itself.
Author: James H. Speer
Publisher: University of Arizona Press
Published: 2010
Total Pages: 360
ISBN-13: 0816526850
DOWNLOAD EBOOKThis comprehensive text addresses all of the subjects that a reader who is new to the field will need to know and will be a welcome reference for practitioners at all levels. It includes a history of the discipline, biological and ecological background, principles of the field, basic scientific information on the structure and growth of trees, the complete range of dendrochronology methods, and a full description of each of the relevant subdisciplines.
Author: Ralph D. Nyland
Publisher: Waveland Press
Published: 2016-05-13
Total Pages: 704
ISBN-13: 147863376X
DOWNLOAD EBOOKSilviculture: Concepts and Applications reflects a belief that all the tools of silviculture have a useful role in modern forestry. Through careful analysis and creative planning, foresters can address a wide array of commodity and nonmarket interests and opportunities while maintaining dynamic and resilient forests. A landowner’s needs, circumstances, and site conditions guide a silviculturist’s judgment and decision making in finding the best ways to integrate the biologic-ecologic, economic-financial, and managerial-administrative requirements at hand. The Third Edition of this influential text provides a foundational basis for rigorous discussion of techniques. The inclusion of numerous real-world examples and balanced coverage of past and current practices broadens the concept of silviculture and the ways that managers can use it to address both traditional and emerging interests in forests. A thorough discussion of new and proven interpretations increasingly directs the attention of foresters toward the role silviculture plays in creating, maintaining, rehabilitating, and restoring forests that can sustain an expanding variety of ecosystem services.
Author: K. W. G. Valentine
Publisher:
Published: 1986
Total Pages: 0
ISBN-13: 9780771882654
DOWNLOAD EBOOKAuthor: Frank A. Albini
Publisher:
Published: 1976
Total Pages: 100
ISBN-13:
DOWNLOAD EBOOKThis paper presents a brief survey of the research literature on wildfire behavior and effects and assembles formulae and graphical computation aids based on selected theoretical and empirical models. The uses of mathematical fire behavior models are discussed, and the general capabilities and limitations of currently available models are outlined.
Author: Henry H. Gibson
Publisher:
Published: 1913
Total Pages: 734
ISBN-13:
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