您好,欢迎您查看分析测试百科网,请问有什么帮助您的?

稍后再说 立即咨询
咨询列表
北京博伦经纬科技发展有限公司
X
头像

客服中心

如果企业客服不在线,也可拨打400电话联系。或者发布求购信息

400-6699-1171000
发布求购 实验百科采购-随时微信沟通
扫码关注
实验采购百科

北京博伦经纬科技发展有限公司

400-6699-117转1000
热门搜索:
分析测试百科网 > 博伦气象 > 茎流计/茎流仪 > HPV 植物茎流传感器/植物液流计

HPV 植物茎流传感器/植物液流计

参考报价: 面议 型号: HPV
品牌: 博伦气象 产地: 澳大利亚
关注度: 33 信息完整度:
样本: 典型用户: 暂无
供应商性质一般经销商产地类别进口
价格范围1万-2万
咨询留言 在线咨询

400-6699-1171000

HPV 茎流量传感器/Sap Flow Sensor

HPV茎流量传感器是一款校准型、低成本的热脉冲液流传感器,输出校准液流量、热速、茎水含量、茎温等数据,功耗低,内置加热控制,同时改善了传统的加热方式,其原理采用热脉冲速率法(HPV),测量范围:-200~+1000cm/hr(热流速度)或-100~+2000cm3/cm2/hr (茎流通量密度),可广泛用于于茎流量监测、植物茎流蒸发计算、植物茎流蒸腾量、植物灌溉等

植物茎流是树木内部的“水”运动,而蒸腾是从叶片通过光合作用蒸发流出的水分。树液流量和蒸腾量之间有很强的关联性,通常理解是同一回事。但是,严格地说,它们是不同的,这体现在它们是如何被测量的。

SAP流量以L/hr(或每天、每周等)为单位进行测量。蒸腾量以每小时、每天、每星期等毫米(mm)为单位测量。

 

蒸散量=蒸腾量+蒸发量

 

蒸腾量以毫米为测量单位,可与降雨量以毫米计作比较。随着时间的推移,降雨量(水输入)应与蒸腾量(输出)相匹配。如果蒸腾作用更高,通常是树木作物的蒸腾作用,那么这种差异必须通过灌溉来弥补。

    蒸发量(evaporation),蒸发量是指在一定时段内,由土壤或水中的水分经蒸发而散布到空中的量。

1mm(降雨量)=1㎡地面1kg水

1mm(蒸腾量)=1㎡叶面积的1升树液流量(水)

 

例如:在果园和葡萄园等有管理的树木作物系统中,蒸发量与蒸腾量相比非常小。因此,为了简化测量,通常忽略蒸发量,将蒸腾量取为平均蒸散量(ETo)。


 

技术指标

测量范围:-200~+1000cm/hr(热流速度)

分辨率:0.001cm/hr

准确度:±0.1cm/hr

探针尺寸:φ1.3mm*L30mm

温度位置:外10mm,内20mm

针距:6mm

探针材质:316不锈钢


温度范围:-30~+70℃

响应时间:200ms

加热电阻:39Ω,400J/m

电源:12V DC

电流:空闲5mA, 测量<270mA

信号输出:SDI-12

线缆:5m,Max 60m


茎流量传感器参考文献:
1. Kim, H.K.; Park, J.; Hwang, I. Investigating water transport through the xylem network in vascular plants.
J. Exp. Bot. 2014, 65, 1895–1904. [CrossRef] [PubMed]

2. Steppe, K.; Vandegehuchte, M.W.; Tognetti, R.; Mencuccini, M. Sap flow as a key trait in the understanding of plant hydraulic functioning. Tree Physiol. 2015, 35, 341–345. [CrossRef] [PubMed]

3. Vandegehuchte, M.W.; Steppe, K. Sap-flux density measurement methods: Working principles and
applicability. Funct. Plant Biol. 2013, 40, 213–223. [CrossRef]

4. Marshall, D.C. Measurement of sap flow in conifers by heat transport. Plant Physiol. 1958 , 33, 385–396.
[CrossRef] [PubMed]

5. Cohen, Y.; Fuchs, M.; Green, G.C. Improvement of the heat pulse method for determining sap flow in trees. Plant Cell Environ. 1981, 4, 391–397. [CrossRef]

6. Green, S.R.; Clothier, B.; Jardine, B. Theory and practical application of heat pulse to measure sap flow.
Agron. J. 2003, 95, 1371–1379. [CrossRef]

7. Burgess, S.S.O.; Adams, M.A.; Turner, N.C.; Beverly, C.R.; Ong, C.K.; Khan, A.A.H.; Bleby, T.M. An improved heat-pulse method to measure low and reverse rates of sap flow in woody plants. Tree Physiol. 2001 , 21, 589–598. [CrossRef]

8. Forster, M.A. How reliable are heat pulse velocity methods for estimating tree transpiration? Forests 2017 , 8, 350. [CrossRef]

9. Bleby, T.M.; McElrone, A.J.; Burgess, S.S.O. Limitations of the HRM: Great at low flow rates, but no yet up to speed? In Proceedings of the 7th International Workshop on Sap Flow: Book of Abstracts, Seville, Spain, 22–24 October 2008.

10. Pearsall, K.R.; Williams, L.E.; Castorani, S.; Bleby, T.M.; McElrone, A.J. Evaluating the potential of a novel dual heat-pulse sensor to measure volumetric water use in grapevines under a range of flow conditions. Funct. Plant Biol. 2014, 41, 874–883. [CrossRef]

11. Clearwater, M.J.; Luo, Z.; Mazzeo, M.; Dichio, B. An external heat pulse method for measurement of sap flow through fruit pedicels, leaf petioles and other small-diameter stems. Plant Cell Environ. 2009 , 32, 1652–1663.[CrossRef]

12. Green, S.R.; Romero, R. Can we improve heat-pulse to measure low and reverse flows? Acta Hortic. 2012 , 951, 19–29. [CrossRef]

13. Green, S.; Clothier, B.; Perie, E. A re-analysis of heat pulse theory across a wide range of sap flows. Acta Hortic. 2009, 846, 95–104. [CrossRef]

14. Ferreira, M.I.; Green, S.; Concei??o, N.; Fernández, J. Assessing hydraulic redistribution with the
compensated average gradient heat-pulse method on rain-fed olive trees. Plant Soil 2018 , 425, 21–41.
[CrossRef]

15. Romero, R.; Muriel, J.L.; Garcia, I.; Green, S.R.; Clothier, B.E. Improving heat-pulse methods to extend the measurement range including reverse flows. Acta Hortic. 2012, 951, 31–38. [CrossRef]

16. Testi, L.; Villalobos, F. New approach for measuring low sap velocities in trees. Agric. Meteorol. 2009 , 149, 730–734. [CrossRef]

17. Vandegehuchte, M.W.; Steppe, K. Sapflow+: A four-needle heat-pulse sap flow sensor enabling nonempirical sap flux density and water content measurements. New Phytol. 2012, 196, 306–317. [CrossRef] [PubMed]

18. Kluitenberg, G.J.; Ham, J.M. Improved theory for calculating sap flow with the heat pulse method.
Agric. For. Meteorol. 2004, 126, 169–173. [CrossRef]

19. Vandegehuchte, M.W.; Steppe, K. Improving sap-flux density measurements by correctly determining
thermal diffusivity, differentiating between bound and unbound water. Tree Physiol. 2012 , 32, 930–942.
[CrossRef]

20. Looker, N.; Martin, J.; Jencso, K.; Hu, J. Contribution of sapwood traits to uncertainty in conifer sap flow as estimated with the heat-ratio method. Agric. For. Meteorol. 2016, 223, 60–71. [CrossRef]

21. Edwards, W.R.N.; Warwick, N.W.M. Transpiration from a kiwifruit vine as estimated by the heat pulse
technique and the Penman-Monteith equation. N. Z. J. Agric. Res. 1984, 27, 537–543. [CrossRef]

22. Becker, P.; Edwards, W.R.N. Corrected heat capacity of wood for sap flow calculations. Tree Physiol 1999 , 19, 767–768. [CrossRef]

23. Hogg, E.H.; Black, T.A.; den Hartog, G.; Neumann, H.H.; Zimmermann, R.; Hurdle, P.A.; Blanken, P.D.;
Nesic, Z.; Yang, P.C.; Staebler, R.M.; et al. A comparison of sap flow and eddy fluxes of water vapor from a
boreal deciduous forest. J. Geophys. Res. 1997, 102, 28929–28937. [CrossRef]

24. Barkas, W.W. Fibre saturation point of wood. Nature 1935, 135, 545. [CrossRef]

25. Kollmann, F.F.P.; Cote, W.A., Jr. Principles of Wood Science and Technology: Solid Wood; Springer: Berlin Heidelberg, Germany, 1968.

26. Swanson, R.H.; Whitfield, D.W.A. A numerical analysis of heat pulse velocity and theory. J. Exp. Bot. 1981 ,32, 221–239. [CrossRef]

27. Barrett, D.J.; Hatton, T.J.; Ash, J.E.; Ball, M.C. Evaluation of the heat pulse velocity technique for measurement of sap flow in rainforest and eucalypt forest species of south-eastern Australia. Plant Cell Environ. 1995 , 18, 463–469. [CrossRef]

28. Biosecurity Queensland. Environmental Weeds of Australia for Biosecurity Queensland Edition; Queensland Government: Brisbane, Australia, 2016.

29. Steppe, K.; de Pauw, D.J.W.; Doody, T.M.; Teskey, R.O. A comparison of sap flux density using thermal
dissipation, heat pulse velocity and heat field deformation methods. Agric. For. Meteorol. 2010 , 150, 1046–1056. [CrossRef]

30. López-Bernal, A.; Testi, L.; Villalobos, F.J. A single-probe heat pulse method for estimating sap velocity in trees. New Phytol. 2017, 216, 321–329. [CrossRef] [PubMed]

31. Forster, M.A. How significant is nocturnal sap flow? Tree Physiol. 2014, 34, 757–765. [CrossRef] [PubMed]

32. Cohen, Y.; Fuchs, M.; Falkenflug, V.; Moreshet, S. Calibrated heat pulse method for determining water uptake in cotton. Agron. J. 1988, 80, 398–402. [CrossRef]

33. Cohen, Y.; Takeuchi, S.; Nozaka, J.; Yano, T. Accuracy of sap flow measurement using heat balance and heat pulse methods. Agron. J. 1993, 85, 1080–1086. [CrossRef]

34. Lassoie, J.P.; Scott, D.R.M.; Fritschen, L.J. Transpiration studies in Douglas-fir using the heat pulse technique. For. Sci. 1977, 23, 377–390.

35. Wang, S.; Fan, J.; Wang, Q. Determining evapotranspiration of a Chinese Willow stand with three-needleheat-pulse probes. Soil Sci. Soc. Am. J. 2015, 79, 1545–1555. [CrossRef]

36. Bleby, T.M.; Burgess, S.S.O.; Adams, M.A. A validation, comparison and error analysis of two heat-pulse methods for measuring sap flow in Eucalyptus marginata saplings. Funct. Plant Biol. 2004 , 31, 645–658.[CrossRef]

37. Madurapperuma, W.S.; Bleby, T.M.; Burgess, S.S.O. Evaluation of sap flow methods to determine water use by cultivated palms. Environ. Exp. Bot. 2009, 66, 372–380. [CrossRef]

38. Green, S.R. Measurement and modelling the transpiration of fruit trees and grapevines for irrigation
scheduling. Acta Hortic. 2008, 792, 321–332. [CrossRef]

39. Intrigliolo, D.S.; Lakso, A.N.; Piccioni, R.M. Grapevine cv. ‘Riesling’ water use in the northeastern United
States. Irrig. Sci. 2009, 27, 253–262. [CrossRef]

40. Eliades, M.; Bruggeman, A.; Djuma, H.; Lubczynski, M. Tree water dynamics in a semi-arid, Pinus brutia
forest. Water 2018, 10, 1039. [CrossRef]

41. Zhao, C.Y.; Si, J.H.; Qi, F.; Yu, T.F.; Li, P.D. Comparative study of daytime and nighttime sap flow of Populus euphratica. Plant Growth Regul. 2017, 82, 353–362. [CrossRef]

42. Deng, Z.; Guan, H.; Hutson, J.; Forster, M.A.; Wang, Y.; Simmons, C.T. A vegetation focused soil-plant-atmospheric continuum model to study hydrodynamic soil-plant water relations. Water Resour. Res. 2017, 53, 4965–4983. [CrossRef]

43. Doronila, A.I.; Forster, M.A. Performance measurement via sap flow monitoring of three Eucalyptus species for mine site and dryland salinity phytoremediation. Int. J. Phytoremed. 2015, 17, 101–108. [CrossRef]

44. López-Bernal, á.; Alcántara, E.; Villalobos, F.J. Thermal properties of sapwood fruit trees as affected by
anatomy and water potential: Errors in sap flux density measurements based on heat pulse methods. Trees
2014, 28, 1623–1634. [CrossRef]


HPV 植物茎流传感器/植物液流计信息由北京博伦经纬科技发展有限公司为您提供,如您想了解更多关于HPV 植物茎流传感器/植物液流计报价、型号、参数等信息,欢迎来电或留言咨询。

注:该产品未在中华人民共和国食品药品监督管理部门申请医疗器械注册和备案,不可用于临床诊断或治疗等相关用途

HPV 植物茎流传感器/植物液流计 - 产品推荐

移动版: 资讯 直播 仪器谱

Copyright ©2007-2023 ANTPEDIA, All Rights Reserved

京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号