| The variation characteristics of Jujube tree sap flow at different time scales |
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| DOI：10.7606/j.issn.1000-7601.2016.03.15 |
| Key Words: jujube tree trunk sap flow different directions different depth radial distribution |
| Author Name | Affiliation | | MA Jian-peng | Research Center of Soil and Water Conservation and Ecological Environment, CAS&ME, Yangling, Shaanxi 712100, China；University of Chinese Academy of Sciences, Beijing 100049, China | | WANG You-ke | Research Center of Soil and Water Conservation and Ecological Environment, CAS&ME, Yangling, Shaanxi 712100, China；College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | CHEN Dian-yu | College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | JIN Shan-shan | Research Center of Soil and Water Conservation and Ecological Environment, CAS&ME, Yangling, Shaanxi 712100, China；University of Chinese Academy of Sciences, Beijing 100049, China | | SHE Tan | College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In order to explore the variation characteristics of jujube tree trunk sap flow at different depths and different directions, to improve the research precision of transpiration consumption of jujube trees in Loess Hilly Region, we utilized thermal dissipation probe (TDP) to study the trunk sap flow velocity of jujube trees at different directions and different depths respectively in the jujube experiment demonstration base of Yuanzhi mountain in Mizhi County of Shaanxi Province. The results showed that: (1) The difference of monitored results exited between different directions of the probe. The different research time scale, the monitored results in each direction was significant difference. The size of the significant difference expressed as: hourly scale>daily scale>monthly scale. (2) The monitored results at different probe depths existed difference, and with the different time scale, the significant difference was different between different probe depthes. The size of the significant difference expressed as: hourly scale>daily scale>monthly scale. (3) The water consumption in growth stage calculated by the monitored value of TDP installed at the north and the depth of 20 mm was more accuracy. |
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