Closed box system for determining whole tree gas exchange

Abstract

The invention relates to plant-atmosphere gas exchange determination technology, in particular to a closed box system for determining whole tree gas exchange, which solves the problems that the prior art has no mature observation system with reliable use, simple and convenient operation and commercialization directly applied to single plant level (whole tree) gas exchange observation and the like. The system comprises lifting equipment, a box body, a base and a gas analyzer, wherein the box body used for closing determined tree is connected with the lifting equipment and arranged on the base; a sensor of the gas analyzer is arranged in the box body; and the gas analyzer adopts Li-6400 portable photosynthetic apparatus of American LICOR Company, and during determination, the sensor (containing IRGA) needs to be sealed in the box body. The system can realize simultaneous observation of gas concentration of CO2 and H2O of the whole tree, automatically acquire and store data, and automatically monitor air temperature of the box body, relative air humidity, photosynthetic active radiation, atmospheric pressure and other environment factors, and is favorable for research and application of tree gas exchange.

Description

technical field [0001] The invention relates to a gas exchange measurement technology between plants and the atmosphere, in particular to a closed-circuit box-type system for measuring gas exchange of whole trees, which is a closed-circuit box-type system capable of gas exchange of whole trees. Background technique [0002] Since the industrial revolution, due to the intensification of human activities, the resource-consuming social development model has begun to expand viciously, leading to drastic changes in the processes of the earth's climate system and the earth's ecosystem. These include the increase in atmospheric CO due to the burning of fossil fuels 2 As the concentration of greenhouse gases continues to rise, the carbon cycle and carbon exchange are disturbed, and the carbon balance in nature is disrupted. There are also land cover changes and irrational use of water resources, which have a strong impact on the water cycle of terrestrial ecosystems. The interacti...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a closed-circuit box-type system for measuring the gas exchange of whole trees that is economical, practical, wide in scope of application, convenient to transform and simple to operate, and to solve the problem of mature observation systems that are not reliable in use, easy to operate, and commercialized in the prior art. The system is directly applied to the observation of gas exchange at the level of a single tree (that is, the whole tree), filling the gap in the gas exchange observation system of the whole tree

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