不同径级沙柳液流特征及其对环境因子的响应

doi:10.13304/j.nykjdb.2023.0818

中国农业科技导报 ›› 2025, Vol. 27 ›› Issue (4): 239-249.DOI: 10.13304/j.nykjdb.2023.0818

• 生物制造资源生态 • 上一篇

不同径级沙柳液流特征及其对环境因子的响应

刘文娟¹(), 张世纪¹, 陈宏伟², 杨建军³, 韩兆敏⁴, 裴志永¹()

^1.内蒙古农业大学能源与交通工程学院，呼和浩特 010018
^2.鄂尔多斯市林业和草原局，内蒙古鄂尔多斯 017000
^3.内蒙古鄂尔多斯市造林总场，内蒙古鄂尔多斯 014300
^4.内蒙古自治区林业和草原监测规划院，呼和浩特 010020

收稿日期:2023-11-08 接受日期:2024-02-02 出版日期:2025-04-15 发布日期:2025-04-15
通讯作者: 裴志永
作者简介:刘文娟 E-mail：liumux1998@126.com；
基金资助:
国家自然科学基金地区科学基金项目(52069018);内蒙古自治区科技重大专项(2020ZD0009)

Sap Flow Characteristics of Different Diameter Classes of Salix psammophila and Its Response to Environmental Factors

Wenjuan LIU¹(), Shiji ZHANG¹, Hongwei CHEN², Jianjun YANG³, Zhaomin HAN⁴, Zhiyong PEI¹()

^1.College of Energy and Transportion Engineering，Inner Mongolia Agricultural University，Hohhot 010018，China
^2.Ordos Forestry and Grassland Bureau，Inner Mongolia Ordos 017000，China
^3.Inner Mongolia Ordos City Afforestation Farm，Inner Mongolia Ordos 014300，China
^4.Inner Mongolia Autonomous Region Forestry and Grassland Monitoring Planning Institute，Hohhot 010020，China

Received:2023-11-08 Accepted:2024-02-02 Online:2025-04-15 Published:2025-04-15
Contact: Zhiyong PEI

摘要/Abstract

摘要：

为探究不同径级沙柳（Salix psammophila）的液流特征及其与环境因子的关系，采用植物液流仪（EMS62）对沙柳液流速率进行持续监测，同步采用小型气象站（HOBO U30）和水势传感器（TEROS 21）监测气象因子及土壤因子。结果表明，各径级沙柳液流速率的日变化均呈“单峰”型曲线。随着时间变化，>10 mm径级沙柳的液流速率呈先升后降趋势，≤10 mm径级沙柳的液流速率呈下降趋势，且液流启动与结束时间存在差异。晴天时沙柳的液流速率大于阴天，其中晴天液流的变化呈“单峰”型曲线；而雨天液流变化呈“单峰”或“双峰”型曲线。太阳辐射是影响沙柳液流变化的首要因子，且随着时间尺度的扩大，液流变化的解释率降低，影响因子的数量增多。综上，在生长季内，沙柳液流量随径级增大而增大，但不同径级液流变化存在差异。

关键词: 沙柳, 环境因子, 不同径级, 液流

Abstract:

To explore the sap flow characteristics of Salix psammophila with different diameter classes and its relationship with environmental factors， the sap flow rate of Salix psammophila was continuously monitored by plant sap flow meter （EMS62）， and the meteorological factors and soil factors were monitored simultaneously by small weather station （HOBO U30） and water potential sensor （TEROS 21）. The results showed that the diurnal variation of sap flow rate at each diameter class showed a ‘single peak’ curve. With the change of time， the flow rate of >10 mm diameter class increased first and then decreased， while the flow rate of ≤10 mm diameter class decreased continuously， and the start-up and end time of flow were different. The sap flow rate of Salix psammophila in sunny day was higher than that in rainy day. The change of sap flow in sunny days showed ‘single peak’ curve， and the change of sap flow in rainy days showed ‘single peak’ or ‘double peak’. Solar radiation was the primary factor affecting the change of Salix psammophila sap flow. With the expansion of time scale， the interpretation rate of sap flow change decreases， while the number of affected factors increased. In conclusion， during the growing season， the sap flow of Salix psammophila increased with the increase of diameter class， but there were differences in the sap flow changes of different diameter classes.

Key words: Salix psammophila, environmental factor, different diameter classes, sap flow

中图分类号:

S718

刘文娟, 张世纪, 陈宏伟, 杨建军, 韩兆敏, 裴志永. 不同径级沙柳液流特征及其对环境因子的响应[J]. 中国农业科技导报, 2025, 27(4): 239-249.

Wenjuan LIU, Shiji ZHANG, Hongwei CHEN, Jianjun YANG, Zhaomin HAN, Zhiyong PEI. Sap Flow Characteristics of Different Diameter Classes of Salix psammophila and Its Response to Environmental Factors[J]. Journal of Agricultural Science and Technology, 2025, 27(4): 239-249.

图/表 10

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天气 Weather	径级 Diameter class/mm	回归方程Regression equation	决定系数R²
晴天 Sunny day	6<SD≤8	Y=5.996+0.012R+1.148Vw-0.354Ta+0.794Ts+2.091VPD+0.057RH+0.365SWP	0.793
	8<SD≤10	Y=11.647+0.022R+2.053Vw+2.264VPD+0.076RH	0.888
	10<SD≤12	Y=24.653+0.025R+0.49SWP	0.884
	SD>12	Y=22.4+0.041R+4.898Vw-0.609Ta+1.186Ts+0.842SWP	0.868
雨天 Rainy day	6<SD≤8	Y=-6.452+0.006R-0.246SWP+0.278RH+7.816VPD-0.3Ta-0.231Vw+0.222Ts	0.710
	8<SD≤10	Y=2.308+0.012R+6.522VPD+0.187RH-0.583Vw-0.237SWP	0.814
	10<SD≤12	Y=-8.19+0.012R+16.092VPD+0.386RH-0.495Ta	0.888
	SD>12	Y=-20.393+0.018R+30.075VPD+0.812RH-1.284Ta	0.761

天气 Weather	径级 Diameter class/mm	回归方程Regression equation	决定系数R²
晴天 Sunny day	6<SD≤8	Y=5.996+0.012R+1.148Vw-0.354Ta+0.794Ts+2.091VPD+0.057RH+0.365SWP	0.793
	8<SD≤10	Y=11.647+0.022R+2.053Vw+2.264VPD+0.076RH	0.888
	10<SD≤12	Y=24.653+0.025R+0.49SWP	0.884
	SD>12	Y=22.4+0.041R+4.898Vw-0.609Ta+1.186Ts+0.842SWP	0.868
雨天 Rainy day	6<SD≤8	Y=-6.452+0.006R-0.246SWP+0.278RH+7.816VPD-0.3Ta-0.231Vw+0.222Ts	0.710
	8<SD≤10	Y=2.308+0.012R+6.522VPD+0.187RH-0.583Vw-0.237SWP	0.814
	10<SD≤12	Y=-8.19+0.012R+16.092VPD+0.386RH-0.495Ta	0.888
	SD>12	Y=-20.393+0.018R+30.075VPD+0.812RH-1.284Ta	0.761

径级 Diameter class/mm	风速 Vw/（m·s^-1）	空气温度 Ta/℃	相对湿度 RH/%	饱和水汽压差VPD	太阳辐射 R/（W·m^-2）	土壤水势 SWP/KPa	土壤温度 Ts/℃
6<SD≤8	0.801^**	0.785^**	-0.632^**	0.748^**	0.917^**	0.110	-0.200
8<SD≤10	0.807^**	0.806^**	-0.623^**	0.743^**	0.931^**	0121	-0.191
10<SD≤12	0.840^**	0.812^**	-0.653^**	0.776^**	0.945^**	0.120	-0.199
SD>12	0.809^**	0.796^**	-0.604^**	0.736^**	0.931^**	0.105	-0.181

径级 Diameter class/mm	风速 Vw/（m·s^-1）	空气温度 Ta/℃	相对湿度 RH/%	饱和水汽压差VPD	太阳辐射 R/（W·m^-2）	土壤水势 SWP/KPa	土壤温度 Ts/℃
6<SD≤8	0.801^**	0.785^**	-0.632^**	0.748^**	0.917^**	0.110	-0.200
8<SD≤10	0.807^**	0.806^**	-0.623^**	0.743^**	0.931^**	0121	-0.191
10<SD≤12	0.840^**	0.812^**	-0.653^**	0.776^**	0.945^**	0.120	-0.199
SD>12	0.809^**	0.796^**	-0.604^**	0.736^**	0.931^**	0.105	-0.181

径级 Diameter class/mm	风速 Vw/（m·s^-1）	空气温度 Ta/℃	相对湿度 RH/%	饱和水汽压差VPD	太阳辐射 R/（W·m^-2）	土壤水势 SWP/KPa	土壤温度 Ts/℃
6<SD≤8	0.504^**	0.142	-0.822^**	0.742^**	0.558^**	0.303^**	-0.409^**
8<SD≤10	0.455^**	0.343^**	-0.795^**	0.778^**	0.689^**	0.210^*	-0.224^*
10<SD≤12	0.237^**	0.548^**	-0.340^**	0.521^**	0.457^**	0.220^*	0.129
SD>12	0.358^**	0.555^**	-0.480^**	0.638^**	0.518^**	0.260^*	0.051

不同径级沙柳液流特征及其对环境因子的响应

Sap Flow Characteristics of Different Diameter Classes of Salix psammophila and Its Response to Environmental Factors

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参考文献 31

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Metrics

时间尺度 Time-scale	径级 Diameter class/mm	进入顺序Access order	因子Factor	回归方程Regression equation	决定系数R²
日变化 Daily variation	6<SD≤8	1	R	Y=1.958+0.039R	0.841
	6<SD≤8	2	Ta	Y=-6.615+0.033R+0.456Ta	0.856
	8<SD≤10	1	R	Y=1.665+0.049R	0.867
	8<SD≤10	2	Ta	Y=-10.399+0.041R+0.641Ta	0.886
	10<SD≤12	1	R	Y=2.240+0.052R	0.892
	10<SD≤12	2	Ta	Y=-9.573+0.043R+0.628Ta	0.909
	SD>12	1	R	Y=4.639+0.074R	0.867
	SD>12	2	Ta	Y=-11.369+0.062R+0.851Ta	0.882
月变化 Monthly variation	6<SD≤8	1	RH	Y=31.383-0.140RH	0.676
	6<SD≤8	2	Ta	Y=31.543-0.136RH+0.046SWP	0.701
	8<SD≤10	1	RH	Y=33.387-0.129RH	0.633
		2	Ta	Y=27.506-0.124RH+0.247Ta	0.690
		3	VPD	Y=39.673-0.378RH-0.840Ta-9.224VPD	0.763
		4	Ts	Y=44.430-0.367RH+1.220Ta-10.100VPD-0.617Ts	0.794
		5	R	Y=40.225-0.330RH+1.080Ta-9.069VPD-0.497Ts+0.005R	0.805
	10<SD≤12	1	Ta	Y=12.820+0.580Ta	0.300
		2	R	Y=10.368+0.518Ta+0.014R	0.442
		3	Ts	Y=16.756+0.791Ta+0.009R-0.524Ts	0.474
	SD>12	1	VPD	Y=33.798+5.281VPD	0.406
		2	RH	Y=12.612+12.088VPD+0.227RH	0.508
		3	R	Y=3.063+12.181VPD+0.290RH+0.021R	0.586
		4	Ts	Y=3.385+16.029VPD+0.428RH+0.020R-0.600Ts	0.607

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