Wang Guodong,Zhang Yiping,Zhang Junchang,et al.Research on the Temperature Hysteretic Effect of Soil Water Potential[J].Research of Soil and Water Conservation,1996,3(03):125-130.
土壤水势温度滞后效应的研究
- Title:
- Research on the Temperature Hysteretic Effect of Soil Water Potential
- Keywords:
- soil water potential; temperature hysteretic effect; viscous coefficient temperature effect; Relative temperature coefficient of water potential
- 摘要:
- 测定了陕西省四种主要土壤在不同含水量条件下,随温度升高和降低(在10～45℃范围内)水势的变化幅值.得到该值与变温过程有关,即呈现土壤水势温度滞后效应,此效应随含水量增大而减少,随质地加重而增大,选用CΦ作为供试土壤水势温度效应的特征参数进行分析,表明土壤水势温度滞后现象是土壤水势温度效应的必然结果,并动用土壤水粘滞系数的温度效应对土壤水势温度效应产生的机理及其滞后原因作了初步探讨.
- Abstract:
- The soil water potential change range of four soils at different water contant with a rise and down in 10℃ to 45℃ range was tested,and the results showed that the change depended on the prosess of change temperature,and appeared the temperature hysteretic effect of soil water potential,that the effect dscreased along with the water contant increased and increased in pace with the texture increased.That results were analysed with CΦ as the characteristic parameter of soil water potential temperature effect showed that the soil water potential temperature hysteretic effect was the inevitable outcome of the temperature effect,and the mechanism of the effect and the cause of production hysteretic was conducted preliminary study with the viscous coefficient temperature effect of soil water.
参考文献/References:
[1] Constantz.J,.Comparison of isothermal and isobaric water retention paths in nonsweling porous materials.Water Res.,1991,27(12):3165-3170
[2] 张一平,白锦鳞等.温度对土壤水势影响的研究.土壤学报,1990,27(4)
[3] Taylor.S.A.,G.L.Sterwart.,Some themodynamic properties of soil water.Soil Sci.Soc.Am.Proc.,1960,24,243-247,
[4] Philip.J.R.,D.A.De Vries..Moisture movement in porous materials under temperature gradients.Trans.Am.Geophys.,1957,(38):322-232,
[5] Hopmans.J.W.,J.H.Dane.,Temperature dependence of soil water retention curves.Soil Sci.SOc.Am.J.,1968,(50):562-567
[6] Saxton.K.E.,W.J.Rawls.,Estimating generalized soil water characteristic from texture.Soil Sci Soc.Am J.,1986,(50):1031-1036
[7] Low.P.F.,Physical chemistry of clay-water interactions.Adv.Agron,1961,(13):319-327
相似文献/References:
[1]王琛,余新晓,陈丽华,等.树干径向变化对茎液流以及气象因子的响应[J].水土保持研究,2010,17(01):45.
WANG Chen,YU Xin-xiao,CHEN Li-hua,et al.Response of Stem Radial Variation That Caused by Sapflow and Meteorological Factors[J].Research of Soil and Water Conservation,2010,17(03):45.
[2]杨帆,刘志军,马忠秋,等.土壤水分动态及防灾减灾分析研究[J].水土保持研究,2005,12(06):14.
YANG Fan,LIU Zhi-jun,MA Zhong-qiu,et al.Study on Analysis of Changes of Soil Water and Disaster Prevention and Relief[J].Research of Soil and Water Conservation,2005,12(03):14.
备注/Memo
收稿日期:1995-9-10。