干旱区研究

干旱区研究 ›› 2025, Vol. 42 ›› Issue (8): 1426-1436.doi: 10.13866/j.azr.2025.08.07 cstr: 32277.14.AZR.20250807

• 植物生态 • 上一篇    下一篇

乌兰布和沙漠地区多枝柽柳蒸腾耗水特征及其与环境因子的关系

袁子喧1,3(), 辛智鸣1,2,3, 程一本1(), 于涛1, 刘昱萱1   

  1. 1.北京林业大学水土保持学院， 北京 100083
    2.中国林业科学研究院沙漠林业实验中心， 国家林业和草原局防沙治沙工程技术研究中心， 内蒙古 磴口 015200
    3.内蒙古磴口荒漠生态系统定位观测研究站， 内蒙古 磴口 015200
  • 收稿日期:2025-01-17 修回日期:2025-06-10 出版日期:2025-08-15 发布日期:2025-11-24
  • 通讯作者: 程一本. E-mail: chengyiben@bjfu.edu.cn
  • 作者简介:袁子喧（2003-），女，硕士研究生，主要从事退化生态系统修复与管理研究. E-mail: Yzx0124@bjfu.edu.cn
  • 基金资助:
    中国林业科学研究院基本科研业务费专项资金(CAFYBB2024ZA020);阿拉善盟科技计划项目(AMKJ2023-17);国家重点研发计划(2023YFF130420103);国家重点研发计划(2023YFF1305201);国家自然科学基金(U2243202);北京林业大学热点追踪项目(2023BLRD04)

Transpiration and water consumption characteristics of Tamarix ramosissima in the Ulan Buh Desert and their relationship with environmental factors

YUAN Zixuan1,3(), XIN Zhiming1,2,3, CHENG Yiben1(), YU Tao1, LIU Yuxuan1   

  1. 1. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
    2. Experimental Center of Desert Forestry, Chinese Academy of Forestry, Engineering Technology Research Center of Desertification Control, National Forestry and Grassland Administration, Dengkou 015200, Inner Mongolia, China
    3. Inner Mongolia Dengkou Desert Ecosystem Observation Research Station, Dengkou 015200, Inner Mongolia, China
  • Received:2025-01-17 Revised:2025-06-10 Published:2025-08-15 Online:2025-11-24

RichHTML

5

PDF (PC)

4

赞

摘要： 为明确乌兰布和沙漠地区有限水资源条件下多枝柽柳（Tamarix ramosissima）的蒸腾耗水动态特征及其与环境因子的关系，本研究利用包裹式液流仪对乌兰布和沙漠地区人工种植的多枝柽柳树干液流量进行监测，同时对气象和土壤水分等环境因子同步进行监测。结果表明：（1） 生长季内，多枝柽柳的树干液流量呈现先升高后降低的趋势，累计树干液流量为50.96 kg，日平均树干液流量为380.27 g，且具有明显的季节性变化特征。（2） 不同天气条件下，多枝柽柳的树干液流量日变化情况存在明显差异。晴天时的树干液流量大于阴天时的树干液流量，雨天时多枝柽柳的树干液流速率在降雨时段明显下降。连续典型晴天时，多枝柽柳存在明显的夜间蒸腾现象，白天的树干液流量为夜间树干液流量的8.6倍左右。（3） 整体来看，多枝柽柳的树干液流量与地下100 cm深处的土壤含水量、饱和水汽压差和光合有效辐射存在统计显著的强正相关关系，但相关系数提示实际关联强度可能较低，这可能是柽柳对当地干旱环境已较为适应，表现出较强的生态适应性。研究结果可为干旱沙区生态水资源补给的高效利用和固沙植被的梯度配置及生态可持续管理提供数据支持。

关键词: 多枝柽柳, 树干液流, 环境因子, 荒漠化防治, 乌兰布和沙漠

Abstract:

To clarify the dynamic characteristics of transpiration and water consumption of Tamarix ramosissima under the condition of limited water resources in the Ulan Buh Desert area and their relationship with environmental factors, this study monitored the sap flow rate of T. ramosissima planted in the Ulan Buh Desert area and simultaneously monitored environmental factors such as meteorological factors and soil moisture. The following results were obtained: (1) During the growing season, the sap flow rate of T. ramosissima first increased and then decreased. The cumulative sap flow rate was 50.96 kg, and the average daily sap flow rate was 380.27 g, with noticeable seasonal variation characteristics. (2) Obvious differences were detected in the diurnal variation of T. ramosissima under different weather conditions. The sap flow rate was higher on sunny days than on cloudy days. On rainy days, the sap flow rate of T. ramosissima decreased significantly during the rainfall period. On consecutive typical sunny days, T. ramosissima exhibited obvious transpiration phenomenon at night, and the liquid flow rate during the day was approximately 8.60 times the liquid flow rate at night. (3) Overall, there is a statistically significant strong positive correlation between the sap flow rate of T. ramosissima and the soil water content at 100 cm depth, vapor pressure deficit, and photosynthetically active radiation; however, the correlation coefficient suggests that the actual association strength may be relatively low. This might be because T. ramosissima has adapted relatively well to the local arid environment and shows strong ecological adaptability. These results can provide data support for the efficient utilization of ecological water resource replenishment in arid sandy areas, the gradient configuration of sand-fixing vegetation and ecological sustainable management.

Key words: Tamarix ramosissima, sap flow, environmental factors, desertification control, Ulan Buh Desert