The Study in Sap Flow Characteristics and Photosynthetic Characteristics of Haloxylon Ammodendron and Tamarix in the Gurbantunggute Desert

Abstract:

According to the sap flow characteristics and photosynthetic characteristics of Haloxylon ammodendron and Tamarix, we measured the sap flow with the method of thermal diffusion. To monitor photosynthesis with application the instrument CI-340, and the result shows that: (1)The daily net photosynthetic rate change of Haloxylon ammodendron is a typical double peak type, and Tamarixs is a single peak type; (2)The daily transpiration variation of Haloxylon ammodendron is similar to net photosynthetic rate change rule, it has a phenomenon which we called noon break, Tamarixs isnt obvious, it presents volatile changes slightly; (3)The daily sap flow of Haloxylon ammodendron is a typical double peak type, Tamarixs isnt obvious, it presents volatile changes slightly, and at sometimes the sap flow of branches is greater than the breasts. The results provide some supports for ecological water demand of the plants. It has some significance for ecological environment construction of the Gurbantunggute Desert.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 390-395
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.390
• Online since: February 2014
• Authors: Shuang Dui Xu, Xin Lin He, Guang Yang, Jiang Chun Chen, Wen Xin Yang, Si Chen, Cui Wang
• Keywords: Daily Net Photosynthetic Rate, Daily Sap Flow, Daily Transpiration Rate, Desert Vegetation

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DOI: 10.1093/treephys/3.4.309