北京山区侧柏林蒸散拆分研究

王渝淞; 贾国栋; 张永娥; 郑鹏飞; 朱栩辉; 孙乐乐; 余新晓

doi:10.13870/j.cnki.stbcxb.2019.02.042

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北京山区侧柏林蒸散拆分研究

更新时间：2025-03-12

- 北京山区侧柏林蒸散拆分研究
- Study on the Separation of Evapotranspiration of
- 水土保持学报 2019年33卷第2期页码：272-278
- 作者机构：
  
  北京林业大学水土保持与荒漠化防治教育部重点实验室,北京,100083
- 作者简介：
  
  [ "王渝淞(1994-),男,在读硕士研究生,主要从事森林水文和水土保持研究。E-mail:786501484@qq.com" ]
- 基金信息：
  
  国家自然科学基金项目（41430747，41877152）林果业生态环境功能提升协同创新中心项目（PXM2018_014207_000024）
- DOI：10.13870/j.cnki.stbcxb.2019.02.042
  中图分类号：
- 纸质出版：2019
- 稿件说明：
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王渝淞, 贾国栋, 张永娥, 等. 北京山区侧柏林蒸散拆分研究[J]. 水土保持学报, 2019,33(2):272-278.

WANG Yusong, JIA Guodong, ZHANG Yonge, et al. Study on the Separation of Evapotranspiration of[J]. 2019, 33(2): 272-278.
王渝淞, 贾国栋, 张永娥, 等. 北京山区侧柏林蒸散拆分研究[J]. 水土保持学报, 2019,33(2):272-278. DOI： 10.13870/j.cnki.stbcxb.2019.02.042.

WANG Yusong, JIA Guodong, ZHANG Yonge, et al. Study on the Separation of Evapotranspiration of[J]. 2019, 33(2): 272-278. DOI： 10.13870/j.cnki.stbcxb.2019.02.042.

摘要

以北京山区广泛分布的侧柏林为研究对象，分别采用水文学实测法（树干液流计结合大型蒸渗仪）和稳定同位素法对林分蒸散量进行定量拆分研究。结果表明：（1）在日尺度上，该林分的蒸散量和蒸腾量均显现为"单峰"型的变化曲线。林分总的蒸散量和蒸腾量均在正午前后达到最大值，分别为1.27，1.13 mm/h；（2）实测法和稳定同位素法对侧柏林蒸腾量占总蒸散量的计算结果分别为80.21%~89.63%和79.10%~98.71%。相比水文学实测法，稳定同位素法在小时尺度上误差为（3.97±3.53）%，而在日尺度上误差为（1.89±0.67）%。该林分蒸散主要来自于植被蒸腾，林木蒸腾耗水远大于土壤蒸发耗水。

Abstract

Taking the Platycladus orientalis forest distributed widely in Beijing mountain area as research object

the evapotranspiration of the stand was quantitatively separated by two methods

which were hydrological measurement method (sap flow sluice combined with large-scale lysimeter) and stable isotope. The results showed that:(1) On the daily scale

the evapotranspiration and transpiration of the stand both showed "single peak" type curves. The total evapotranspiration and transpiration of the stand reached the maximum values around noon

which was 1.27 mm/h and 1.13 mm/h

respectively. (2) The proportion of transpiration to total evapotranspiration calculated by the measured method and the stable isotope method was 80.21%~89.63% and 79.10%~98.71%

respectively. Compared with the measured values

the error of the stable isotope method was(3.97±3.53)% on the hourly scale

and was (1.89±0.67)% on the daily scale. The evapotranspiration of this stand was mainly from the transpiration of vegetation

and the water consumption of forest transpiration was far greater than that of soil evaporation.

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