Characteristics of dew events in an arid artificial oasis cropland and a sub-humid cropland in China
Meng, Y; Wen, XF
2016
Source PublicationJOURNAL OF ARID LAND
ISSN1674-6767
Volume8Issue:3Pages:399-408
AbstractDew 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.
SubtypeJournal
Keyworddew amount frequency of dew duration of dew flux-profile
Subject AreaEnvironmental Sciences & Ecology
WOS Subject ExtendedEnvironmental Sciences
WOS KeywordNEGEV DESERT ; SURFACE HUMIDITY ; WATER-VAPOR ; LEAF WATER ; CANOPY ; ECOSYSTEM ; WETNESS ; GROWTH ; FOREST ; ENVIRONMENTS
Indexed BySCI
Language英语
WOS IDWOS:000373138300008
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44238
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Meng, Y,Wen, XF. Characteristics of dew events in an arid artificial oasis cropland and a sub-humid cropland in China[J]. JOURNAL OF ARID LAND,2016,8(3):399-408.
APA Meng, Y,&Wen, XF.(2016).Characteristics of dew events in an arid artificial oasis cropland and a sub-humid cropland in China.JOURNAL OF ARID LAND,8(3),399-408.
MLA Meng, Y,et al."Characteristics of dew events in an arid artificial oasis cropland and a sub-humid cropland in China".JOURNAL OF ARID LAND 8.3(2016):399-408.
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