BOREAS TE-9 NSA Leaf Chlorophyll Density PDF Download

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BOREAS TE-9 NSA Leaf Chlorophyll Density

BOREAS TE-9 NSA Leaf Chlorophyll Density PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 24

Book Description


BOREAS TE-9 NSA Leaf Chlorophyll Density

BOREAS TE-9 NSA Leaf Chlorophyll Density PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 24

Book Description


Boreas Te-9 Nsa Leaf Chlorophyll Density

Boreas Te-9 Nsa Leaf Chlorophyll Density PDF Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781724098764
Category :
Languages : en
Pages : 38

Book Description
The BOREAS TE-9 team collected several data sets related to chemical and photosynthetic properties of leaves in boreal forest tree species. These data were collected to help provide an explanation of potential seasonal and spatial changes of leaf pigment properties in boreal forest species at the NSA. At different dates (FFC-Winter, FFC-Thaw, IFC-1, IFC-2, and IMC-3), foliage samples were collected from the upper third of the canopy for five NSA sites (YJP, OJP, OBS, UBS, and OA) near Thompson, Manitoba. Subsamples of 100 needles for black spruce, 20 needles for jack pine, and single leaf for trembling aspen were cut into pieces and immersed in a 20-mL DMF aliquot in a Nalgene test tube. The extracted foliage materials were then oven-dried at 68 C for 48 hours and weighed. Extracted leaf dry weight was converted to a total leaf area basis to express the chlorophyll content in mg/sq cm of total leaf area. The data are provided in tabular ASCII files. The data files are available on a CD-ROM (see document number 20010000884), or from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC). Hall, Forrest G. (Editor) and Curd, Shelaine (Editor) and Margolis, Hank and Sy, Mikailou Goddard Space Flight Center NASA/TM-2000-209891/VOL155, NAS 1.15L209891/VOL155, Rept-2000-03136-0/VOL155

BOREAS TE-9 In Situ Diurnal Gas Exchange of NAS Boreal Forest Stands

BOREAS TE-9 In Situ Diurnal Gas Exchange of NAS Boreal Forest Stands PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 26

Book Description


Photon-Vegetation Interactions

Photon-Vegetation Interactions PDF Author: Ranga B. Myneni
Publisher: Springer Science & Business Media
ISBN: 3642753892
Category : Science
Languages : en
Pages : 571

Book Description
Photon-Vegetation Interactions deals with the interaction of electromagnetic radiation with vegetation canopies. The approach to the various aspects is mainly theoretical and consequently the subject is being treated as a special branch of mathematical physics. A major emphasis is on the development of theoretical methods for determining the reflection function of vegetation canopies in optical remote sensing. Furthermore, the coupling of the radiative transfer theory with leaf photosynthesis to evaluate the productivity of vegetation canopies is treated as well as the theory of photon transport in phototropic and other biological media.

Multispectral Image Analysis Using the Object-Oriented Paradigm

Multispectral Image Analysis Using the Object-Oriented Paradigm PDF Author: Kumar Navulur
Publisher: CRC Press
ISBN: 1420043072
Category : Technology & Engineering
Languages : en
Pages : 206

Book Description
Bringing a fresh new perspective to remote sensing, object-based image analysis is a paradigm shift from the traditional pixel-based approach. Featuring various practical examples to provide understanding of this new modus operandi, Multispectral Image Analysis Using the Object-Oriented Paradigm reviews the current image analysis methods and demonstrates advantages to improve information extraction from imagery. This reference describes traditional image analysis techniques, introduces object-oriented technology, and discusses the benefits of object-based versus pixel-based classification. It examines the creation of object primitives using image segmentation approaches and the use of various techniques for object classification. The author covers image enhancement methods, how to use ancillary data to constrain image segmentation, and concepts of semantic grouping of objects. He concludes by addressing accuracy assessment approaches. The accompanying downloadable resources present sample data that enable the use of different approaches to problem solving. Integrating remote sensing techniques and GIS analysis, Multispectral Image Analysis Using the Object-Oriented Paradigm distills new tools to extract information from remotely sensed data.

The Dictionary of Physical Geography

The Dictionary of Physical Geography PDF Author: David S. G. Thomas
Publisher: John Wiley & Sons
ISBN: 1118687434
Category : Science
Languages : en
Pages : 918

Book Description
The third edition of this comprehensive encyclopedic dictionary covers the whole field of physical geography and provides an essential reference for all students and lecturers in this field.

Greenhouse Gas Emissions - Fluxes and Processes

Greenhouse Gas Emissions - Fluxes and Processes PDF Author: A. Tremblay
Publisher: Springer Science & Business Media
ISBN: 3540266437
Category : Science
Languages : en
Pages : 743

Book Description
In a time when an unquestionable link between anthropogenic emissions of greenhouse gases and climatic changes has finally been acknowledged and * widely documented through IPCC reports, the need for precise estimates of greenhouse gas (GHG) production rates and emissions from natural as well as managed ecosystems has risen to a critical level. Future agreements between nations concerning the reduction of their GHG emissions will - pend upon precise estimates of the present level of these emissions in both natural and managed terrestrial and aquatic environments. From this viewpoint, the present volume should prove to a benchmark contribution because it provides very carefully assessed values for GHG emissions or exchanges between critical climatic zones in aquatic en- ronments and the atmosphere. It also provides unique information on the biases of different measurement methods that may account for some of the contradictory results that have been published recently in the literature on this subject. Not only has a large array of current measurement methods been tested concurrently here, but a few new approaches have also been developed, notably laser measurements of atmospheric CO concentration 2 gradients. Another highly useful feature of this book is the addition of - nitoring and process studies as well as modeling.

Photosynthesis and Production in a Changing Environment

Photosynthesis and Production in a Changing Environment PDF Author: D.O. Hall
Publisher: Springer Science & Business Media
ISBN: 9401115664
Category : Science
Languages : en
Pages : 503

Book Description
The majority of the world's people depend research work should be carried out at the local and regional level by locally trained on plants for their livelihood since they grow them for food, fuel, timber, fodder and people. many other uses. A good understanding Following the success of our earlier book of the practical factors which govern the (Techniques in Bioproductivity and Photo synthesis; Pergamon Press, 1985), which productivity of plants through the process of photosynthesis is therefore of paramount was translated into four major languages, importance, especially in the light of cur the editors and contributors have exten rent concern about global climate change sively revised the content and widened the and the response of both crops and natural scope of the text,· so it now bears a title ecosystems. in line with current concern over global The origins of this book lie in a series of climate change. · In particular, we have training courses sponsored by the United added chapters on remote sensing, con Nations Environment Programme (Project trolled-environment studies, chlorophyll No. FP/6108-88-0l (2855); 'Environment fluorescence, metabolite partitioning and changes and the productivity of tropical the use of mass isotopes, all of which grasslands'), with additional support from techniques are increasing in their applica many international and national agencies. tion and importance to this subject area.

Permafrost Ecosystems

Permafrost Ecosystems PDF Author: Akira Osawa
Publisher: Springer Science & Business Media
ISBN: 1402096933
Category : Science
Languages : en
Pages : 507

Book Description
Drawing from a decade-long collaboration between Japan and Russia, this important volume presents the first major synthesis of current knowledge on the ecophysiology of the coniferous forests growing on permafrost at high latitudes. It presents ecological data for a region long inaccessible to most scientists, and raises important questions about the global carbon balance as these systems are affected by the changing climate. Making up around 20% of the entire boreal forests of the northern hemisphere, these ‘permafrost forest ecosystems’ are subject to particular constraints in terms of temperature, nutrient availability, and root space, creating exceptional ecosystem characteristics not known elsewhere. This authoritative text explores their diversity, structure, dynamics and physiology. It provides a comparison of these forests in relation to boreal forests elsewhere, and concludes with an assessment of the potential responses of this unique biome to climate change. The book will be invaluable to advanced students and researchers interested in boreal vegetation, forest ecology, silviculture and forest soils, as well as to researchers into climate change and the global carbon balance.

The radiation regime and architecture of plant stands

The radiation regime and architecture of plant stands PDF Author: J. Ross
Publisher: Springer Science & Business Media
ISBN: 9400986475
Category : Science
Languages : en
Pages : 411

Book Description
The solar radiant energy is in fact the only source of energy for the basic physical processes taking place in the atmosphere and on the earth's surface. When passing through the atmosphere and being reflected by the ground surface, solar radiation undergoes changes and conversions. Some of it is absorbed in the atmosphere and converted into other forms of energy, mainly into heat, and some is scattered by gases, by dust and by water vapour. Because of absorption and scattering in the atmosphere, solar radiation is changed by the time it reaches the earth's surface. That part of it which arrives as a beam of parallel rays is referred to as direct solar radiation, and that which is scattered in the atmosphere and reaches the earth's surface from all directions of the sky is called diffuse solar radiation. Both of them are reflected back into the atmosphere when they reach the earth's surface, and this third type of radiation is defined as reflected radiation. All of these radiations differ from solar radiation arriving at the upper level of the atmosphere in intensity as well as in spectral composition although they all fall within the spectral region of solar radiation. In atmospheric physics these types of radiation are known as short-wave radiation (SWR) as distinguished from long-wave or irifrared radiation (L WR) emitted by the atmosphere and the earth's surface.