Photosynthesis Chamber Source/Platform Document

Summary:

Photosynthesis chambers were used in the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment (FIFE), which was conducted from 1987 to 1989, and in the Boreal Ecosystem-Atmosphere Study (BOREAS), which was conducted from 1993 to 1996.

Table of Contents:

• 1 Source/Platform or Data Collection Environment Overview
• 2 Data Acquisition and Processing
• 3 References
• 4 Glossary of Terms
• 5 List of Acronyms
• 6 Document Information

1. Source/Platform or Data Collection Environment Overview:

Source/Platform or Data Collection Environment Long Name, Source/Platform Acronym:

Photosynthesis chamber

Source/Platform Introduction:

A photosynthesis chamber is a transparent airtight enclosure that is used along with a gas exchange system and sensing devices to measure plant functions, such as photosynthetic respiration, stomatal conductance, canopy resistance, and leaf photosynthetic rate, especially in response to changes in light and carbon dioxide concentrations. Photosynthesis chambers can be equipped with environmental control equipment (which allow researchers to vary such things as light, temperature, relative humidity, and gas concentrations).

Mission Objectives:

Photosynthesis chambers provide a controlled environment that supports the study of leaf and plant functions. The specific objectives of a photosynthesis chamber vary according to the needs of the particular study.

Parameters:

The size of a photosynthesis chamber can vary significantly according to the needs of a particular project (for example, a 0.25-L chamber for a single-leaf study or a 1.8-m by 0.8-m chamber for a whole-canopy study). Photosynthesis chambers can be equipped with instruments to control the enclosed environment and to collect data. Measurements of intact leaves or plants can be made in the field with the use of a portable, battery-operated gas exchange system that can be carried to the plants' location.

Coverage Information:

Coverage is project-specific.

List of Sensors/Instruments:

Photosynthesis chambers can be equipped with a number of devices, including an infrared gas analyzer, a CO₂ gas analyzer, a gas exchange system, quantum sensors, and an infrared thermometer.

2. Data Acquisition and Processing:

Specific methods of acquiring and processing data vary from study to study, depending in part upon the instruments used.

3. References:

Information is available at the following World Wide Web sites:

The Boreal Ecosystem-Atmosphere Study (BOREAS)
(http://www-eosdis.ornl.gov/BOREAS/boreas_home_page.html)

First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment (FIFE)
(http://www-eosdis.ornl.gov/FIFE/FIFE_Home.html)

Disclaimer: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

4. Glossary of Terms:

A glossary is available at http://harp.gsfc.nasa.gov/v0ims/glossary.of.terms.html. For additional terms, see http://cdiac.esd.ornl.gov/cdiac/glossary.html.

5. List of Acronyms:

BOREAS

Boreal Ecosystem-Atmosphere Study

FIFE

First ISLSCP Field Experiment

ISLSCP

International Satellite Land Surface Climatology Project

ORNL

Oak Ridge National Laboratory

URL

Uniform Resource Locator

A more complete list of acronyms is available at http://harp.gsfc.nasa.gov/v0ims/acronyms.html. For additional terms, see http://cdiac.esd.ornl.gov/cdiac/pns/acronyms.html.

6. Document Information:

Document Revision Date:

June 8, 1998

Document Review Date:

June 8, 1998

Document ID:

ORNL-source494

Document Curator:

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Document URL:

http://daac.ornl.gov/source_documents/photosynthesis_chamber.html

Revision Date: Thursday, 31-Jul-2008 22:51:38 EDT
URL: http://daac.ornl.gov/source_documents/photosynthesis_chamber.html