干旱区生态环境知识资源中心(Arid): Partitioning of available energy in canopy and soil surface in croplands with different irrigation methods

Arid

DOI	10.1016/j.agwat.2023.108475
	Partitioning of available energy in canopy and soil surface in croplands with different irrigation methods
	Qin, Shujing; Fan, Yangzhen; Li, Sien; Cheng, Lei; Zhang, Lu; Xi, Haiyang; Qiu, Rangjian; Liu, Pan
通讯作者	Cheng, L
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2023
卷号	288
英文摘要	Available energy partitioning in the canopy and at the soil surface under the control of biophysical environment critically influences agricultural water resources management and the regional climate. Drip irrigation technology has been extensively promoted in arid regions and is gradually replacing conventional border irrigation technology, which alters the soil surface hydrothermal conditions and influences the available energy partitioning both in canopy and at the soil surface through biophysical processes. The water-saving effect of drip irrigation has been well studied previously, however, its biophysical controls of available energy partitioning in canopy and soil surface remain insufficiently understood. In this study, we made continuous comparative measurements in two maize fields with border irrigation and drip irrigation during the growing seasons in the period 2014-2018 by simultaneously using eddy covariance systems, sap flow gauges and micro-lysimeters. We found that drip irrigation increased transpiration by 10% and reduced soil evaporation by 40% during the partial canopy period, and these values decreased to 1% and 26%, respectively as the crop developed to complete canopy cover period. However, drip irrigation increased sensible heat fluxes both in canopy and soil surface by 93% and 46%, respectively during the partial canopy period, and by 10% and 231%, respectively during the complete canopy period. The soil moisture drives the discrepancy of available energy partitioning in both canopy and soil surface between two fields. Slow-release effect of the drip irrigation in replacing warm air in soil pores enhanced thermal convection in soil surface, small irrigation volume and small moisture area decreased evaporation loss, and frequent irrigation and sufficient soil moisture induced stable energy interaction between canopy and soil surface, therefore enhancing more sensible heat directed to canopy and soil surface in drip irrigated field. The results enhanced understanding of ecohydrology processes in agroecosystems and provided valuable information for agricultural water resource management.
英文关键词	Available energy partitioning Canopy layer Soil surface Border irrigation Drip irrigation
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001062180200001
WOS关键词	FLUX MEASUREMENT TECHNIQUES ; EDDY-COVARIANCE ; DRIP IRRIGATION ; PLASTIC MULCH ; LOESS PLATEAU ; ARID REGION ; EVAPOTRANSPIRATION MODEL ; PLANT TRANSPIRATION ; CLIMATE-CHANGE ; SPRING MAIZE
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395093
推荐引用方式 GB/T 7714	Qin, Shujing,Fan, Yangzhen,Li, Sien,et al. Partitioning of available energy in canopy and soil surface in croplands with different irrigation methods[J],2023,288.
APA	Qin, Shujing.,Fan, Yangzhen.,Li, Sien.,Cheng, Lei.,Zhang, Lu.,...&Liu, Pan.(2023).Partitioning of available energy in canopy and soil surface in croplands with different irrigation methods.AGRICULTURAL WATER MANAGEMENT,288.
MLA	Qin, Shujing,et al."Partitioning of available energy in canopy and soil surface in croplands with different irrigation methods".AGRICULTURAL WATER MANAGEMENT 288(2023).