Please wait a minute...
Journal of Arid Land  2016, Vol. 8 Issue (3): 399-408    DOI: 10.1007/s40333-016-0006-y
Research Articles     
Characteristics of dew events in an arid artificial oasis cropland and a sub-humid cropland in China
MENG Yao, WEN Xuefa*
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Download:   PDF(398KB)
Export: BibTeX | EndNote (RIS)      

Abstract  Dew is an important source of water which significantly influences the physiological status of vegetation and the microclimate environment. For quantifying the characteristics of dew events and analyzing the underlying mechanism of dew formation in different ecosystems, we measured, based on the flux-profile method, the amount, frequency and duration of dew events in two croplands, an arid artificial oasis cropland in Zhangye, Gansu province and a sub-humid cropland in Luancheng, Hebei province in China. The results showed that dew events were observed in a total of 69 days in Zhangye, which accounted for 59% of the growing season (from 28 May to 21 September, 2012), while 128 days in Luancheng, which accounted for 79% of the growing season (from 5 April to 13 September, 2008). The frequencies of dew events were 2.8 and 2.4 times of those of precipitation in Zhangye and Luancheng, respectively. In addition, the dew amount reached up to 9.9 and 20.2 mm in Zhangye and Luancheng, which accounted for 9.5% and 4.1% of precipitation, respectively. The average amount of dew was 0.14 and 0.16 mm/night in Zhangye and Luancheng, respectively and the duration of dew events ranged from 0.5 to 12.0 h in the two study sites. Dew amounts were associated with the gradient of atmospheric water vapor concentration and dew duration (P<0.001) in both the two sites. The result implies that dew events play a more important role in crop growth in arid areas in comparison to sub-humid areas considering the dew occurrence frequency and the amount per night.

Received: 28 June 2015      Published: 01 June 2016

The National Natural Science Foundation of China (91125002)
The Strategic Priority Research Program of Chinese Academy of Sciences (XDA05050601)

Corresponding Authors: WEN Xuefa     E-mail:
Cite this article:

MENG Yao, WEN Xuefa. Characteristics of dew events in an arid artificial oasis cropland and a sub-humid cropland in China. Journal of Arid Land, 2016, 8(3): 399-408.

URL:     OR

Agam N, Berliner P R. 2006. Dew formation and water vapor adsorption in semi-arid environments—a review. Journal of Arid Environments, 65(4): 572–590.

Barradas V L, Glez-Medellín M G. 1999. Dew and its effect on two heliophile understorey species of a tropical dry deciduous forest in Mexico. International Journal of Biometeorology, 43(1): 1–7.

Beysens D, Muselli M, Nikolayev V, et al. 2005. Measurement and modelling of dew in island, coastal and alpine areas. Atmospheric Research, 73(1–2): 1–22.

Beysens D, Clus O, Mileta M, et al. 2007. Collecting dew as a water source on small islands: the dew equipment for water project in Biševo (Croatia). Energy, 32(6): 1032–1037.

Businger J, Wyngaard J, Izumi Y, et al. 1971. Flux-profile relationships in the atmospheric surface layer. Journal of the Atmospheric Sciences, 28(2): 181–189.

Cosh M H, Kabela E D, Hornbuckle B, et al. 2009. Observations of dew amount using in situ and satellite measurements in an agricultural landscape. Agricultural and Forest Meteorology, 149(6–7): 1082–1086.

Dai A G. 2006. Recent climatology, variability, and trends in global surface humidity. Journal of Climate, 19(15): 3589–3606.

De Roode S R, Bosveld F C, Kroon P S. 2010. Dew formation, eddy-correlation latent heat fluxes, and the surface energy imbalance at Cabauw during stable conditions. Boundary-Layer Meteorology, 135(3): 369–383.

Dietz J, Leuschner C, Hölscher D, et al. 2007. Vertical patterns and duration of surface wetness in an old-growth tropical montane forest, Indonesia. Flora–Morphology, Distribution, Functional Ecology of Plants, 202(2): 111–117.

Dyer A J. 1974. A review of flux-profile relationships. Boundary-layer Meteorology, 7(3): 363–372.

Garratt J R, Segal M. 1988. On the contribution of atmospheric moisture to dew formation. Boundary-layer Meteorology, 45(3): 209–236.

Hao X M, Li C, Guo B, et al. 2012. Dew formation and its long-term trend in a desert riparian forest ecosystem on the eastern edge of the Taklimakan Desert in China. Journal of Hydrology, 472–473: 90–98.

Huang L J, Wen X F. 2014. Temporal variations of atmospheric water vapor δD and δ18O above an arid articial oasis cropland in the Heihe River Basin. Journal of Geophysical Research, 119(19): 11456–11476.

Kabela E D, Hornbuckle B K, Cosh M H, et al. 2009. Dew frequency, duration, amount, and distribution in corn and soybean during SMEX05. Agricultural and Forest Meteorology, 149(1): 11–24.

Kalthoff N, Fiebig-Wittmaack M, Meißner C, et al. 2006. The energy balance, evapo-transpiration and nocturnal dew deposition of an arid valley in the Andes. Journal of Arid Environments, 65(3): 420–443.

Kidron G J. 1999. Altitude dependent dew and fog in the Negev Desert, Israel. Agricultural and Forest Meteorology, 96(1–3): 1–8.

Kidron G J, Temina M. 2013. The effect of dew and fog on lithic lichens along an altitudinal gradient in the Negev Desert. Geomicrobiology Journal, 30(4): 281–290.

Kim K, Lee X. 2011. Transition of stable isotope ratios of leaf water under simulated dew formation. Plant, Cell & Environment, 34(10): 1790–1801.

Li X, Cheng G D, Liu S M, et al. 2013. Heihe watershed allied telemetry experimental research (HiWATER): scientific objectives and experimental design. Bulletin of the American Meteorological Society, 94(8): 1145–1160.

Madeira A C, Gillespie T J, Duke C L. 2001. Effect of wetness on turfgrass canopy reflectance. Agricultural and Forest Meteorology, 107(2): 117–130.

Malek E, McCurdy G, Giles B. 1999. Dew contribution to the annual water balances in semi-arid desert valleys. Journal of Arid Environments, 42(2): 71–80.

Monteith J, Unsworth M. 1990. Principles of Environmental Physics (2nd ed.). London: Edward Arnold, 291.

Moro M J, Were A, Villagarcía L, et al. 2007. Dew measurement by eddy covariance and wetness sensor in a semiarid ecosystem of SE Spain. Journal of Hydrology, 335(3–4): 295–302.

Richards K. 2004. Observation and simulation of dew in rural and urban environments. Progress in Physical Geography, 28(1): 76–94.

Sharan G, Beysens D, Milimouk-Melnytchouk I. 2007. A study of dew water yields on galvanized iron roofs in Kothara (North-West India). Journal of Arid Environments, 69(2): 259–269.

Uclés O, Villagarcía L, Moro M J, et al. 2014. Role of dewfall in the water balance of a semiarid coastal steppe ecosystem. Hydrological Processes, 28(4): 2271–2280.

Welp L R, Lee X, Kim K, et al. 2008. δ18O of water vapour, evapotranspiration and the sites of leaf water evaporation in a soybean canopy. Plant, Cell & Environment, 31(9): 1214–1228.

Wen X F, Lee X, Sun X M, et al. 2012. Dew water isotopic ratios and their relationships to ecosystem water pools and fluxes in a cropland and a grassland in China. Oecologia, 168(2): 549–561.

Willett K M, Gillett N P, Jones P D, et al. 2007. Attribution of observed surface humidity changes to human influence. Nature, 449(7163): 710–712.

Wilson T B, Bland W L, Norman J M. 1999. Measurement and simulation of dew accumulation and drying in a potato canopy. Agricultural and Forest Meteorology, 93(2): 111–119.

Xiao W, Lee X, Wen X F, et al. 2012. Modeling biophysical controls on canopy foliage water 18O enrichment in wheat and corn. Global Change Biology, 18(5): 1769–1780.

Xu Y Y, Yan B X, Zhu H. 2013. Leaf dew contributes nutrients to paddies and improves rice growth. Acta Agriculturae Scandinavica, Section B-Soil & Plant Science, 63(2): 97–106.

Yan B X, Deng W. 2004. Study on the dew resource in Sanjiang Plain. Journal of Natural Resources, 19(6): 732–737. (in Chinese)

Yan B X, Xu Y Y, Wang L X. 2010. Dew condensation rules in farmland ecosystem in Sanjiang Plain. Acta Ecologica Sinica, 30(20): 5577–5584. (in Chinese)

Yang B, Wen X F, Sun X M. 2015. Irrigation depth far exceeds water uptake depth in an oasis cropland in the middle reaches of Heihe River Basin. Scientific Reports, 5: 15206.

Zangvil A. 1996. Six years of dew observations in the Negev Desert, Israel. Journal of Arid Environments, 32(4): 361–371.

Zhang H, Wen X F. 2015. Flux footprint climatology estimated by three analytical models over a subtropical coniferous plantation in Southeastern China. Journal of Meteorological Research, 29(4): 654–666.

Zhuang Y L, Ratcliffe S. 2012. Relationship between dew presence and Bassia dasyphylla plant growth. Journal of Arid Land, 4(1): 11–18.

Zhuang Y L, Zhao W Z. 2014. Dew variability in three habitats of a sand dune transect in a desert oasis ecotone, northwestern China. Hydrological Processes, 28(3): 1399–1408.
No related articles found!