Chin J Plan Ecolo ›› 1987, Vol. 11 ›› Issue (4): 318-323.

• Research Articles • Previous Articles     Next Articles

The Method and Instrument for the Measurement of the Photosynthesis, Respiration and Transpiration of the Plant Group under the Field Condition

Zu Yuan-gang, Chang Jie   

  • Published:1987-04-10
  • Contact: Sun Cheng-yong

Abstract: The design of an instrument for measurement of the photosynthesis, respiration and transpiration of plant groups under field conditions is shown. It is made of five components: 1. plant chamber, 2. environment control system, 3. gas passage system, 4. measuring system, and 5. power supply. It also has the necessary instruments for measuring environmental factors. Its practical operation on Northeast China’s Yangcao (Leymus chinensis) grassland (1983—1985) proved that all the design specifications had been met. A preliminary approach to the principle of design, measuring procedure and calculating method is also shown in this paper.