干旱区生态环境知识资源中心(Arid): Dew Evaporation Amount and Its Influencing Factors in an Urban Ecosystem in Northeastern China

Arid

DOI	10.3390/w14152428
	Dew Evaporation Amount and Its Influencing Factors in an Urban Ecosystem in Northeastern China
	Xu, Yingying; Jia, Chenzhuo; Liu, Hongzhao
通讯作者	Xu, YY
来源期刊	WATER
EISSN	2073-4441
出版年	2022
卷号	14 期号:15
英文摘要	Dew is an important water input and promotes plant growth. Dew condenses on plant leaves at night, and a portion of this dew returns to the atmosphere through evaporation. The amount of dew that evaporates is not equal to the amount of condensation; however, the dew evaporation process has not received enough attention. By monitoring the dew condensation and evaporation processes associated with four typical shrubs (Syringa, Hemiptelea, Buxus, and Cornus) in northeast China, we found that dew condensation started approximately 30 min after sunset, finished approximately 30 min before sunrise, and then turned to the evaporation phase. Dew had completely depleted approximately 4 h after sunrise. The dew evaporation period was negatively correlated with the wind speed (p < 0.01) and positively correlated with temperature, solar radiation, and relative humidity (RH) (p < 0.01). The average evaporation periods of Syringa, Buxus, Cornus, and Hemiptelea were 282 +/- 21 min, 255 +/- 26 min, 242 +/- 22 min, and 229 +/- 17 min, respectively. The daily evaporation amounts in May and September reached the minimum and maximum values, respectively, and the evaporation intensity of dew was positively correlated with RH (p < 0.01). There was no significant difference in the daily evaporation amounts of Syringa, Hemiptelea, Buxus, or Cornus (p > 0.05), and the annual evaporation amounts of these four plants were 17.05 mm/y, 16.38 mm/y, 21.94 mm/y, and 16.15 mm/y, respectively. The microstructure of leaves affected both the rate and amount of evaporation. Dew evaporated faster on hydrophilic leaves, and leaves with high trichome and stomatal densities had lower proportions of the dew evaporation amount to the condensation amount. The proportions of the dew evaporation amount to the condensation amount derived for Syringa, Hemiptelea, Buxus, and Cornus were 60.38%, 46.07%, 57.24%, and 52.81%, respectively. This study supplements our understanding of dew evaporation amounts, providing information that was missing in the near-surface hydrological cycle and aiding in the assessment of the ecological significance of dew to plants.
英文关键词	dew evaporation period evaporation amount leaf microstructure effect factor
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000840244400001
WOS关键词	DESERT ; FOREST ; PATTERNS ; OASIS ; RAIN ; EDGE
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394820
推荐引用方式 GB/T 7714	Xu, Yingying,Jia, Chenzhuo,Liu, Hongzhao. Dew Evaporation Amount and Its Influencing Factors in an Urban Ecosystem in Northeastern China[J],2022,14(15).
APA	Xu, Yingying,Jia, Chenzhuo,&Liu, Hongzhao.(2022).Dew Evaporation Amount and Its Influencing Factors in an Urban Ecosystem in Northeastern China.WATER,14(15).
MLA	Xu, Yingying,et al."Dew Evaporation Amount and Its Influencing Factors in an Urban Ecosystem in Northeastern China".WATER 14.15(2022).