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A TDR Array Probe for Monitoring Near-Surface Soil Moisture Distribution

文献类型：期刊论文

作者Sheng, Wenyi1,2; Zhou, Rong2; Sadeghi, Morteza2; Babaeian, Ebrahim4; Robinson, David A.3; Tuller, Markus4; Jones, Scott B.2
刊名VADOSE ZONE JOURNAL
出版日期2017-04-01
卷号16期号:4页码:1-8
DOI10.2136/vzj2016.11.0112
文献子类Article
英文摘要Near-surface soil conditions (i.e., moisture and temperature) moderate mass and energy exchange at the soil-atmosphere interface. While remote sensing offers an effective means for mapping near-surface moisture content across large areas, in situ measurements, targeting those specific remotely sensed soil depths, are poorly understood and high-resolution near-surface measurement capabilities are lacking. Time domain reflectometry (TDR) is a well-established, accurate measurement method for soil dielectric permittivity and moisture content. A TDR array was designed to provide centimeter-resolution measurements of near-surface soil moisture. The array consists of nine stainless steel TDR rods spaced 1 cm apart, acting as wave-guide pairs to form eight two-rod TDR probes in series. A critical aspect of the design was matching the spacing of the coaxial cable-TDR rod transition to avoid unwanted reflections in the waveforms. The accuracy of the TDR array permittivity measurement (+/- 1 permittivity unit) was similar to that of conventional TDR as verified in dielectric liquids. Electric field numerical simulations showed minimal influence of adjacent rods during a given rod-pair measurement. The evaporation rate determined by the TDR array compared well with mass balance data in a laboratory test. Near-surface soil moisture profile dynamics were monitored at centimeter-depth resolution using the TDR array in a field experiment where volumetric moisture content estimates (0-8 cm) were within 2% of conventional three-rod TDR probes averaging across 0 to 8 cm and from 1-to 3-cm depths.
WOS关键词TIME-DOMAIN REFLECTOMETRY ; MICROWAVE DIELECTRIC-SPECTROSCOPY ; WATER-CONTENT MEASUREMENTS ; STANDARDIZING CHARACTERIZATION ; ELECTRICAL-CONDUCTIVITY ; CONTENT SENSORS ; PERMITTIVITY ; CALIBRATION ; MODEL
WOS研究方向Environmental Sciences & Ecology ; Agriculture ; Water Resources
语种英语
WOS记录号WOS:000402313400004
资助机构National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Science Foundation (NSF)(1521469) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; National Natural Science Foundation of China (NSFC)(31401295) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; Utah Agricultural Experiment Station, Utah State University, Logan(8940) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296) ; China Scholarship Council(201404910296)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31865]  
专题合肥物质科学研究院_中科院合肥智能机械研究所
作者单位1.Chinese Acad Sci, Inst Intelligent Machines, Hefei 230031, Anhui, Peoples R China
2.Utah State Univ, Dept Plants Soils & Climate, Logan, UT 84322 USA
3.Environm Ctr Wales, Ctr Ecol & Hydrol, Deiniol Rd, Bangor, Gwynedd, Wales
4.Univ Arizona, Dept Soil Water & Environm Sci, Tucson, AZ 85719 USA
推荐引用方式
GB/T 7714		 Sheng, Wenyi,Zhou, Rong,Sadeghi, Morteza,et al. A TDR Array Probe for Monitoring Near-Surface Soil Moisture Distribution[J]. VADOSE ZONE JOURNAL,2017,16(4):1-8.
APA Sheng, Wenyi.,Zhou, Rong.,Sadeghi, Morteza.,Babaeian, Ebrahim.,Robinson, David A..,...&Jones, Scott B..(2017).A TDR Array Probe for Monitoring Near-Surface Soil Moisture Distribution.VADOSE ZONE JOURNAL,16(4),1-8.
MLA Sheng, Wenyi,et al."A TDR Array Probe for Monitoring Near-Surface Soil Moisture Distribution".VADOSE ZONE JOURNAL 16.4(2017):1-8.

入库方式： OAI收割

来源：合肥物质科学研究院

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