Determination of Potential Direct Beam Solar Irradiance
Author: Merrill R. Kaufmann
Publisher:
Published: 1982
Total Pages: 28
ISBN-13:
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Author: Merrill R. Kaufmann
Publisher:
Published: 1982
Total Pages: 28
ISBN-13:
DOWNLOAD EBOOKAlso about sunrise and sunset
Author:
Publisher:
Published: 1991
Total Pages: 538
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1983
Total Pages: 1368
ISBN-13:
DOWNLOAD EBOOKAuthor: Robert W. Pearcy
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 463
ISBN-13: 9401090130
DOWNLOAD EBOOKcapable of providing at least a relative measure of stomatal aperture were first used shortly thereafter (Darwin and Pertz, 1911). The Carnegie Institution of Washington's Desert Research Laboratory in Tucson from 1905 to 1927 was the first effort by plant physiologists and ecologists to conduct team research on the water relations of desert plants. Measurements by Stocker in the North African deserts and Indonesia (Stocker, 1928, 1935) and by Lundegardh (1922) in forest understories were pioneering attempts to understand the environmental controls on photosynthesis in the field. While these early physiological ecologists were keen observers and often posed hypotheses still relevant today they were strongly limited by the methods and technologies available to them. Their measurements provided only rough approximations of the actual plant responses. The available laboratory equip ment was either unsuited or much more difficult to operate under field than laboratory conditions. Laboratory physiologists distrusted the results and ecologists were largely not persuaded of its relevance. Consequently, it was not until the 1950s and 1960s that physiological ecology began its current resurgence. While the reasons for this are complicated, the development and application of more sophisticated instruments such as the infrared gas analyzer played a major role. In addition, the development of micrometeorology led to new methods of characterizing the plant environments.
Author: Virgil E. Scott
Publisher:
Published: 1983
Total Pages: 56
ISBN-13:
DOWNLOAD EBOOKAuthor: William F. Marion
Publisher:
Published: 1994
Total Pages:
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DOWNLOAD EBOOKAuthor: John Robert Jones
Publisher:
Published: 1971
Total Pages: 26
ISBN-13:
DOWNLOAD EBOOKThis prototype model consists of a temperature regime ordinate, a moisture regime ordinate, and a regression equation relating them to aspen site index in the Southern Rocky Mountains. Its construction required a close look at a number of problems and considerations, and some possible methods, in ecosystem modeling. Clonal variation in aspen hight growth prevented a good test of the model, however. The temperature regime ordinate is analogous to degree-days, and integrates elevation and latitude within subregions. The moisture regime ordinate integrates estimates of monthly precipitation, monthly mean temperatures, potential direct-beam insolation, water-holding capacity of the soil, and factors influencing runoff. Equations are provided for estimating mean monthly precipitation, based on topographic and other factors.
Author: Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Publisher:
Published: 1976
Total Pages: 264
ISBN-13:
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