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The Study of Native Plants Water Consumption Characteristic in Gurbantunggut Desert

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Abstract:

The plants' sap flow can characterize water transpiration and consumption, reflect water transmission situation and then determine the vegetation ecological water requirement. This paper takes Haloxylon ammodendron and Tamarix as the research object, adopts thermal diffusion method[1], studies vegetation trunk fluid flow characteristics and the relationship between the meteorological factors. The results show that: (1) Haloxylon ammodendron and Tamarix's sap flux density are showed obvious diurnal variation rule, there is a "nap" phenomenon. Haloxylon ammodendron's liquid sap flux density of monthly mean performance is July > June >August, and Tamarix is July > August >June. (2) Haloxylon ammodendron's flow start time in cloudy is delayed about 1 ~ 1.5 h or so than in sunny day, and Tamarix is about 0.5 h delay. (3) Haloxylon ammodendron and Tamarix's fluid sap flux density in each month are significantly related to meteorological factors, through the regression analysis, Haloxylon ammodendron and Tamarix's trunk liquid sap flux density can make a regression model with meteorological factors.

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Periodical:

Applied Mechanics and Materials (Volumes 295-298)

Pages:

189-197

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.295-298.189

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Online since:

February 2013

Authors:

Wen Xin Yang, Xin Lin He, Guang Yang, Shuang Dui Xu, Si Chen

Keywords:

Desert Vegetation, Gurbantunggut Desert, Liquid Sap Flux Densit, Meteorological Factor

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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