Relationships Between Soil Factors and Populus euphratica’s Sap Flow at Different Time Scales

doi:10.13304/j.nykjdb.2021.0388

Journal of Agricultural Science and Technology ›› 2022, Vol. 24 ›› Issue (6): 196-205.DOI: 10.13304/j.nykjdb.2021.0388

• BIO-MANUFACTURING & RESOURCE AND ECOLOGY • Previous Articles

Relationships Between Soil Factors and Populus euphratica’s Sap Flow at Different Time Scales

Yaru HUANG¹^,²(), Yingbin MA¹^,³, Yonghua LI⁴(), Xue DONG¹^,², Yuan LIU¹^,³, Meng YU¹^,³, Chunxia HAN¹^,², Kaimin JIAN⁵, Haifeng MA⁶

^1.Inner Mongolia Dengkou Desert Ecosystem National Observation Research Station，Experimental Center of Desert Forestry，Chinese Academy of Forestry，Inner Mongolia Dengkou 015200，China
^2.National Long-Term Scientific Research Base of comprehensive control in Ulan Buh Desert，National Forestry and Grassland Administration，Inner Mongolia Dengkou 015200，China
^3.Combat Desertification Engineering Technology Research Center，National Forestry and Grassland Administration，Inner Mongolia Dengkou 015200，China
^4.Institute of Ecological Conservation and Restoration，Beijing 100091，China
^5.Bayannur City Forestry and Grassland Business Development Center，Inner Mongolia Bayannur 015000，China
^6.Bayannur City Forestry and Grassland Resources Protection Center，Inner Mongolia Bayannur 015000，China

Received:2021-05-08 Accepted:2021-07-26 Online:2022-06-15 Published:2022-06-21
Contact: Yonghua LI

不同时间尺度胡杨液流速率与土壤因子的关系

黄雅茹¹^,²(), 马迎宾¹^,³, 李永华⁴(), 董雪¹^,², 刘源¹^,³, 于猛¹^,³, 韩春霞¹^,², 菅凯敏⁵, 马海峰⁶

^1.中国林业科学研究院沙漠林业实验中心，内蒙古磴口荒漠生态系统国家定位观测研究站，内蒙古磴口 015200
^2.乌兰布和沙漠综合治理国家长期科研基地，内蒙古磴口015200
^3.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
^4.中国林业科学研究院生态保护与修复研究所，北京 100091
^5.巴彦淖尔市林业和草原事业发展中心，内蒙古巴彦淖尔 015000
^6.巴彦淖尔市林业和草原资源保护中心，内蒙古巴彦淖尔 015000

通讯作者: 李永华
作者简介:黄雅茹 E-mail：hu_angyaru@126.com；
基金资助:
中央级公益性科研院所基本科研业务费专项(CAFYBB2020ZE005);国家自然科学基金项目(32001374)

Abstract

Abstract:

In order to reveal the influence of soil factors on the sap flow at different time scale of Populus euphratica in Kumtag Desert， the sap flow of Populus euphratica and soil factors， such as soil water content （SWC） and soil temperature （Ts）， were observed synchronously for 5 months. The results were followed， on the monthly scale，SWC_200cm was the main factor influencing the sap flow of Populus euphratica， which could explain 94.9% of sap flow changes. On the daily scale， Ts_200cm， SWC_50cm， SWC_20cm and SWC_200cm had greater influence on the sap flow changes of Populus euphratica， which 93.2% of the sap flow changes of Populus euphratica was explained by these 4 factors， and Ts_200cm was the main influence factor， which could explain 90.3% of the sap flow changes of Populus euphratica. On the hourly scale，Ts_200cm was the biggest influence factor on the sap flow velocity， which could explain 51.6% of the sap flow change. With the expansion of time scale， the number of factors affecting the flow rate changed from more to less， and the reliability changed from small to large. It showed that， based on the soil water content and soil temperature， the predicting of hourly sap flow rate in Populus euphratica required more parameters and had the less reliability， while the predicting of monthly sap flow rate required fewer parameters and had the more reliable. It was more appropriate to predict the sap flow rate of Populus euphratica at a monthly scale.

Key words: Populus euphratica, sap flow, Kumtag Desert, soil factors

摘要：

为揭示土壤因子对胡杨液流的影响是否存在时间尺度差异，对库姆塔格沙漠东南部胡杨液流速率及20、50、100、150和200 cm土层的土壤含水量（soil water content，SWC）、土壤温度（soil temperature，Ts）进行持续 5个月的同步观测。结果表明，月尺度下，SWC_200cm是胡杨液流速率变化的主要影响因子，单独能解释94.9%的液流速率变化；日尺度下，Ts_200cm、SWC_50cm、SWC_20cm、SWC_200cm4个因子可以共同解释胡杨93.2%的液流速率变化，其中，Ts_200cm可以解释液流速率变化的90.3%，对胡杨液流速率影响最大；小时尺度下，Ts_200cm对胡杨液流的影响最大，可以解释液流速率变化的51.6%。随着时间尺度的扩大，对液流速率变化的影响因子由多变少，可靠性由小变大。由此表明，根据土壤含水量及土壤温度预测小时尺度胡杨液流速率需要较多的参数，且可靠性较小；而预测月尺度液流速率需要较少的参数，且可靠性较大。因此，预测月尺度胡杨液流速率更为合适。

关键词: 胡杨, 液流, 库姆塔格沙漠, 土壤因子

CLC Number:

S792

Yaru HUANG, Yingbin MA, Yonghua LI, Xue DONG, Yuan LIU, Meng YU, Chunxia HAN, Kaimin JIAN, Haifeng MA. Relationships Between Soil Factors and Populus euphratica’s Sap Flow at Different Time Scales[J]. Journal of Agricultural Science and Technology, 2022, 24(6): 196-205.

黄雅茹, 马迎宾, 李永华, 董雪, 刘源, 于猛, 韩春霞, 菅凯敏, 马海峰. 不同时间尺度胡杨液流速率与土壤因子的关系[J]. 中国农业科技导报, 2022, 24(6): 196-205.

Figures/Tables 4

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时间尺度 Season	顺序Order	因子Factor	R²	回归方程 Regressions equation
月尺度 Monthly scale	1	SWC_200cm	0.949	Y=-55.216+1 172.110SWC_200cm
日尺度 Daily scale	1	Ts_200cm	0.903	Y=-11.162+1.028Ts_200cm
	2	SWC_50cm	0.918	Y=-24.772+1.414Ts_200cm+107.981SWC_50cm
	3	SWC_20cm	0.924	Y=-22.643+1.259Ts_200cm+83.181SWC_50cm+114.879SWC_20cm
	4	SWC_200cm	0.932	Y=8.676+1.907Ts_200cm+90.729SWC_50cm+159.142SWC_20cm-833.739SWC_200cm
小时尺度 Hourly scale	1	Ts_200cm	0.516	Y=-10.502+0.981Ts_200cm
	2	SWC_50cm	0.535	Y=-32.603+1.596Ts_200cm+176.443SWC_50cm
	3	SWC_100cm	0.564	Y=-67.732+1.801Ts_200cm+339.192SWC_50cm+145.386SWC_100cm
	4	Ts_20cm	0.641	Y=-94.494+1.436Ts_200cm+394.277SWC_50cm+433.601SWC_100cm-0.505Ts_20cm
	5	SWC_200cm	0.678	Y=71.097+4.768Ts_200cm+395.348SWC_50cm+512.750SWC_100cm-0.738Ts_20cm-4 355.887 SWC_200cm
	6	SWC_150cm	0.688	Y=4.809+2.978Ts_200cm+462.510SWC_50cm+362.028SWC_100cm-0.782Ts_20cm-4 499.741 SWC_200cm+869.738 SWC_150cm

时间尺度 Season	顺序Order	因子Factor	R²	回归方程 Regressions equation
月尺度 Monthly scale	1	SWC_200cm	0.949	Y=-55.216+1 172.110SWC_200cm
日尺度 Daily scale	1	Ts_200cm	0.903	Y=-11.162+1.028Ts_200cm
	2	SWC_50cm	0.918	Y=-24.772+1.414Ts_200cm+107.981SWC_50cm
	3	SWC_20cm	0.924	Y=-22.643+1.259Ts_200cm+83.181SWC_50cm+114.879SWC_20cm
	4	SWC_200cm	0.932	Y=8.676+1.907Ts_200cm+90.729SWC_50cm+159.142SWC_20cm-833.739SWC_200cm
小时尺度 Hourly scale	1	Ts_200cm	0.516	Y=-10.502+0.981Ts_200cm
	2	SWC_50cm	0.535	Y=-32.603+1.596Ts_200cm+176.443SWC_50cm
	3	SWC_100cm	0.564	Y=-67.732+1.801Ts_200cm+339.192SWC_50cm+145.386SWC_100cm
	4	Ts_20cm	0.641	Y=-94.494+1.436Ts_200cm+394.277SWC_50cm+433.601SWC_100cm-0.505Ts_20cm
	5	SWC_200cm	0.678	Y=71.097+4.768Ts_200cm+395.348SWC_50cm+512.750SWC_100cm-0.738Ts_20cm-4 355.887 SWC_200cm
	6	SWC_150cm	0.688	Y=4.809+2.978Ts_200cm+462.510SWC_50cm+362.028SWC_100cm-0.782Ts_20cm-4 499.741 SWC_200cm+869.738 SWC_150cm

[1]	WANG Mengmeng1, DANG Hongzhong2*, LI Gangtie1, FENG Jinchao2, YAN Jingqiuzi1, HU Yang1, LI Xing1, YANG Chao1. Sap Flux Density Characteristics of Apple Orchards and Their Relationship with Environmental Factors in Gully Region of Loess Plateau [J]. Journal of Agricultural Science and Technology, 2020, 22(7): 140-147.
[2]	HUANG Yaru1, LI Yonghua2*, XIN Zhiming1, MA Yingbin1, DONG Xue1, LI Xinle1, DUAN Ruibing1, LUO Fengmin1, BIAN Kai1. Sap Flow Variation Characteristics and Its Relationship with Meteorological Factors of artificial Haloxylon ammodendron(C. A. Mey.) Bunge in Summer in Ulan Buh Desert [J]. Journal of Agricultural Science and Technology, 2020, 22(7): 155-165.
[3]	MA Jing-min, MA Cong, WANG Jian-gang, YAOYan-bin\| GE Rong-deng . Evaluation of Environment and Quality of Flue-cured Tobacco in Lingshan Tobacco Areas [J]. , 2006, 8(5): 83-89.

Relationships Between Soil Factors and Populus euphratica’s Sap Flow at Different Time Scales

不同时间尺度胡杨液流速率与土壤因子的关系

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