Paper Infomation
Comparative Analysis on the Sap Flow Characteristics of Desert Vegetation in the Oasis and Edge of Desert in Manasi River Basin
Full Text(PDF, 229KB)
Author: Jiangchun Chen, Guang Yang, Shuangdui Xu, Dong Chen
Abstract: The desert vegetation is an important part for maintaining ecological stability in arid area. The research of typical vegetation in arid desert region of water transport process is important to keep the ecosystem in arid area. In this paper, we took the Haloxylon ammodendron and Tamarix chinensis as the research objects of the typical desert vegetation in arid area, and through the use of TDP stem flow gauge, the sap flow rate was monitored under the conditions of different groundwater table. We analyzed the diurnal variation of sap flow rate and temperature as well as the relationship between different growth periods of Haloxylon ammodendron and Tamarix SAP flow. The results show that (1) Different experimental sites of Haloxylon ammodendron and Tamarix the sap flow have different characteristics. In Oasis Area, the relationship to stem sap flow of Haloxylon ammodendron is in August >in July >in June >in September, and the relationship to Tamarix is in September >in August >in June >in July . In the 150 regiment of the edge of the desert: the relationship to stem sap flow of No.1 Haloxylon ammodendron is in June>in July> in May >in August while the No.2 is in May >in June >in July>in August. And the relationship of No.1 Tamarix is in August >in June >in July >in May while the No.2 is in July >in June> in May > in August. (2) Although the temperature has a certain influence on the sap flow rate, different experimental sites of Haloxylon ammodendron and Tamarix sap flow in response to air temperature is not the same. In Oasis Area, the sap flow rate has relation with the two times of temperature before 12:00 while sap flow of Tamarix velocity has power correlation with temperature after 12:00. On the edge of the desert area, the sap flow rate of Haloxylon has relation with the two times of temperature while sap flow of Tamarix velocity has relation with the two times of temperature after 12:00.
Keywords: Arid Area, Typical Desert Vegetation, Sap Flow, Temperature
References:
[1] Xianying Xu ,Baoping Sun ,Guodong Ding, et al. Dynamic change of typical sand fixing shrubs in arid desert area and its response to environmental factors [J]. Journal of ecology,2008, (3):895-905.
[2] J.Cermak•J.Kucera•N.Nadezhdina Sap flow measurements with some thermodynamic methods,flow integration within trees and scaling up from sample trees to entire forest stands[J].Trees.2004(18): 529-546.
[3] Steve Green,Brent Clothier and Bryan Jardine.Theory and Practical Application of Heat Pulse to Measure Sap Flow agronomy journal. 2003, 95(6):1371-1379.
[4] Huatian Wang, Luyi Ma, flow probe with thermal dissipation sap (TDP) determination of [J] water consumption of whole tree transpiration, Journal of plant ecology, 2002, 26 ( 6) : 661-667.
[5] Huizhen Sun, Xiaofeng Zhou, et al. Research on the application of thermal technology in the development of sap flow [J].2004，15（6）.
[6] Guangde Li, Liming Jia, JieKong Jun. Hole detection using sap flow heat technology research progress [J],Journal of Northwest Forestry College 2008, 23(3) : 94-100
[7] Ping Lu，Laerent URBAN, Zhao Ping. Dranier’s Thermal dissipation probe (TDP) Method for Measuring Sap Flow in Trees: Theory and Practice[J]. Acta Botanica Sinica.2004,46(6) : 631-646
[8] Manasi river basin management office. Manasi river water conservancy department in the Xinjiang Uygur Autonomous Region basin [R] Shihezi: Xinjiang records management everywhere in Manasi River Basin Management Office, 2006
[9] Granier A. Evaluation of transpiration in a Douglas fir stand by means of sap flow measurements. Tree Phsiology,1987,3: 309～320.
[10] Xiaoyou Zhang,Jiadong Gong. Study on the heat pulse technique of Haloxylon liquid flow [J],Northwest Journal of Botany,2004,24(12):2250-2254
[11] WULLSCHLEGER S D，HANSON P J，TODDD E. Transpiration from amulti-species deciduous forest as estimated by xylem sap flow techniques［J］.Forest Ecology and Management, 2001, 143: 205-213.