干旱绿洲农田无核白葡萄树蒸散发的分割研究

王尚涛; 赵楠; 张扬; 张琨; 朱高峰

引用本文:	王尚涛,赵楠,张扬,等.干旱绿洲农田无核白葡萄树蒸散发的分割研究[J].灌溉排水学报,0,():-.
	Wang Shang-tao,Zhao Nan,Zhang Yang,et al.干旱绿洲农田无核白葡萄树蒸散发的分割研究[J].灌溉排水学报,0,():-.

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干旱绿洲农田无核白葡萄树蒸散发的分割研究
王尚涛,赵楠,张扬,等
1.青海大学水利电力学院;2.兰州大学资源环境学院;3.中国科学院青藏高原研究所

摘要:

【目的】探究干旱绿洲区典型农田生态系统作物蒸腾蒸散特征及蒸腾占总蒸散的比值，为T/ET的研究提供数据支撑。【方法】联合运用树干液流(包裹式)、涡度相关法以及微气象观测系统于整个生长季(5—10月)对敦煌沙漠绿洲区无核白葡萄树(Vitis vinifera L.)的冠层蒸腾（Transpiration, T）和总蒸散（Evapotranspiration, ET）特征进行了连续测定; 并分析了不同生态系统及不同观测模拟手段下蒸散发的分割结果。【结果】生长季中，冠层蒸腾量从0.20 mm/d上升到生长中期的8.13 mm/d，然后逐渐下降至末期落叶时到达极小值，日均蒸腾量为3.32 mm/d。总蒸散发量由0.44 mm/d增加到9.97 mm/d，然后逐渐下降至末期到达极小值，日均总蒸散量为4.91mm/d。生长季冠层蒸腾量（T）占总蒸散量（ET）的值（T/ET）约为63.5%。【结论】生长季内，干旱绿洲区农田系统无核白葡萄树冠层蒸腾是总蒸散的主要水分通量。

关键词: 干旱绿洲区;无核白葡萄;树干液流;涡度相关;T/ET

DOI：

分类号:TV93

基金项目:国家自然基金面上项目(41871078)；国家重点研发计划重点专项(2018YFC0406602)；青海省重点研发与转化计划(2021-SF-134)。

Characteristics of Evapotranspiration and Transpiration of Grapevines (Vitis vinifera L.) of Farmland Ecosystem in an Arid Oasis Area

Wang Shang-tao¹, Zhao Nan^2,3,4, Zhang Yang^2,3,4, Zhang Kun⁵, Zhu Gao-feng^2,3,4

1.School of Water Resources and Electric Power,Qinghai University;2.Key Laboratory of Western China'3.'4.s Environmental Systems with the Ministry of Education,College of Earth and Environmental Sciences,Lanzhou University;5.Institute of Tibetan Plateau Research,Chinese Academy of Sciences

Abstract:

【Objective】Exploring the characteristics of transpiration and the ratio of transpiration to evapotranspiration in a farmland ecosystem in arid oasis area to provide certain support for T/ET research.【Method】Characteristics of Evapotranspiration (ET, mm/d) and Transpiration (T, mm/d) of grapevines (Vitis vinifera L.) in an arid oasis area was developed by combining with sap-flow, microclimatic station and eddy-covariance methods during the growth stage.T/ET at the ecosystem scale was also analyzed. 【Result】The results suggested that the value of transpiration increased from 0.20 mm/d to 8.13 mm/d in the middle growth period, and then gradually decreased to a minimum value at the end of leaf fall, with the average of 3.32 mm/d during the growing season. And then, the evapotranspiration increased from 0.44 mm/d to 9.97 mm/d, and then gradually decreased to a minimum value at the end of the period, value of 4.91mm/d. The range of T/ET was about 63.5%. 【Conclusion】transpiration is the domain water flux during the growth stages of grapevines (Vitis vinifera L.) in an arid oasis area.

Key words: Arid oasis area; Vitisvinifera L.; Sap flow; Eddy covariance; T/ET