干旱区生态环境知识资源中心(Arid): Relationship between sand dew and plant leaf dew and its significance in irrigation water supplementation in Guanzhong Basin, China

Arid

DOI	10.1007/s12665-019-8345-6
	Relationship between sand dew and plant leaf dew and its significance in irrigation water supplementation in Guanzhong Basin, China
	Jia, Zhifeng 1,2,3; Ma, Yandong 2,3; Liu, Peng 2; Yao, Congcong 2
通讯作者	Ma, Yandong
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2019
卷号	78 期号:12
英文摘要	Dew can serve as an important source of moisture for plants, biological crusts, insects and small animals in arid and semiarid basin. Dew amount and the relationship between sand dew and plant leaf dew were analyzed to understand dew transformation law under different condensation surfaces and its significance in irrigation water supplementation. During April 1-May 31, and September 1-October 31, 2018, field monitoring was carried out at the groundwater and environment site of Chang'an University, in Guanzhong Basin, China, using weighing method for sand dew measure, as well as leaf wetness sensors for plant leaf dew measure. Results showed that both sand dew and leaf dew manifested high frequency and low amount pattern. Their dew days (69days, 66days) accounted for 80% and 77% of rainless days (86days), but dew amount (6.56mm, 14.75mm) accounted for 3.3% and 7.4% of rainfall (198.2mm) in the same period, respectively. The average daily dew amount for sand was 0.054mm with a daily maximum of 0.22mm, and that for plant leaf was 0.12mm with a daily maximum of 0.78mm. Average daily leaf dew amount was about 2.2 times that of sand dew amount. Sand dew amount (W) was highly and positively correlated to leaf dew amount (D), and the fitting equation was W=0.237xD+0.044 (p<0.01), which will provide a reference for the transformation between sand dew amount and leaf dew amount, and provide a theoretical basis for the evaluation of dew resources in a region. Moreover, dew harvesting is passive and mainly occurs in the natural states, which has no energy requirements, such as electrical energy. Dew harvesting system, as an independent system, can minimize the transportation cost of irrigation and entails low initial investment. And dew water quality is better once pretreated. Hence, artificial condensation surfaces and structure designed to maximize dew amount is of great significance in irrigation water supplementation.
英文关键词	Sand dew Leaf dew Correlation analysis Dew harvesting Irrigation water
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000470757300001
WOS关键词	GROUNDWATER QUALITY ; SOIL SALINIZATION ; SHAANXI PROVINCE ; SEMIARID REGION ; THEMATIC ISSUE ; SURFACE-WATER ; NEGEV DESERT ; AREA ; LOESS ; FOG
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215416
作者单位	1.Changan Univ, Res Inst Water & Dev, 126 Yanta Rd, Xian 710054, Shaanxi, Peoples R China; 2.Changan Univ, Sch Environm Sci & Engn, 126 Yanta Rd, Xian 710054, Shaanxi, Peoples R China; 3.Changan Univ, Minist Educ, Key Lab Subsurface Hydrol & Ecol Effects Arid Reg, 126 Yanta Rd, Xian 710054, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Jia, Zhifeng,Ma, Yandong,Liu, Peng,et al. Relationship between sand dew and plant leaf dew and its significance in irrigation water supplementation in Guanzhong Basin, China[J],2019,78(12).
APA	Jia, Zhifeng,Ma, Yandong,Liu, Peng,&Yao, Congcong.(2019).Relationship between sand dew and plant leaf dew and its significance in irrigation water supplementation in Guanzhong Basin, China.ENVIRONMENTAL EARTH SCIENCES,78(12).
MLA	Jia, Zhifeng,et al."Relationship between sand dew and plant leaf dew and its significance in irrigation water supplementation in Guanzhong Basin, China".ENVIRONMENTAL EARTH SCIENCES 78.12(2019).