Measurements and modeling of hydrological responses to summer pruning in dryland apple orchards

doi:10.1016/j.jhydrol.2020.125651

	Measurements and modeling of hydrological responses to summer pruning in dryland apple orchards
	Ye, Miaotai 2,3; Zhao, Xining 2,3,4; Biswas, Asim 5; Huo, Gaopeng 3; Yang, Bo 3; Zou, Yufeng 3; Siddique, Kadambot H. M.1; Gao, Xiaodong 2,3,4
刊名	JOURNAL OF HYDROLOGY
	2021-03-01
卷号	594 页码:13
关键词	Canopy pruning Soil moisture Evapotranspiration MAESPA Loess Plateau
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125651
通讯作者	Gao, Xiaodong(gao_xiaodong@nwafu.edu.cn)
英文摘要	Long-term imbalance of water demand over supply in drylands can result in serious ecological issues such as severe soil desiccation, posing a great challenge to sustainable development of dryland orchards. This study examined the effects of multi-intensity summer pruning on water balance, production and water use efficiency of apple orchards on China's Loess Plateau using in situ measurements and the process-based MAESPA model. A field experiment with four intensities representing no (0% or control), light (10%), moderate (25%) and heavy (40%) pruning of branches was carried out in three replicates under each treatment. The pruning intensities dictated transpiration, soil moisture and drainage. Although light pruning had weak impacts on these factors, moderate and heavy pruning significantly reduced growing-season transpiration by an average 10.4% and 28.5%, respectively. However, the effects progressively faded away with time at both diurnal and seasonal scales. Moderate and heavy pruning also increased soil water content in the 20-180 cm by an average 18.3% and 20.8%, respectively, and thus enhanced drainage below 180 cm (>220 mm), relative to light pruning and control (<170 mm). Furthermore, light and moderate pruning clearly promoted apple yield and water use efficiency whereas heavy pruning significantly reduced (24.7%) apple yield. Thus, moderate pruning can be a good choice for apple orchards in normal precipitation years while heavy pruning may be an alternative in severe drought years. The MAESPA model reliably simulated seasonal variations of transpiration (R-2: 0.799-0.910, root mean square error (RMSE): 0.111-0.207 mm), soil evaporation (R-2: 0.368-0.628, RMSE: 0.468-1.076 mm), and profile soil water content (R-2: 0.400-0.894, RMSE: 0.005-0.024 cm(3) cm(-3)) for all treatments and can be used as a tool to quantify the effects of pruning on hydrological processes in dryland apple orchards. This study provides insights into the development of a sustainable management strategy in dryland orchards.
资助项目	National Key Research and Development Plan[2016YFC0400204] ; National Natural Science Foundation of China[41771316] ; Shaanxi Innovative Research Team for Key Science and Technology[2017KCT-15] ; '111' Project[B12007] ; CAS Youth Scholar of West China Program[XAB2018A04]
WOS关键词	JUJUBA MILL. PLANTATIONS ; DRIED SOIL LAYERS ; WATER-USE ; SAP FLOW ; NIGHTTIME TRANSPIRATION ; CANOPY CONDUCTANCE ; JAPANESE CEDAR ; LOESS PLATEAU ; TREE ; MOISTURE
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000641589600008
资助机构	National Key Research and Development Plan ; National Natural Science Foundation of China ; Shaanxi Innovative Research Team for Key Science and Technology ; '111' Project ; CAS Youth Scholar of West China Program
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162729]
专题	中国科学院地理科学与资源研究所
通讯作者	Gao, Xiaodong
作者单位	1.Univ Western Australia, UWA Inst Agr, Perth, WA 6001, Australia 2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Inst Water Saving Agr Arid Areas China, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 5.Univ Guelph, Sch Environm Sci, Guelph, ON N1G 2W1, Canada
推荐引用方式 GB/T 7714	Ye, Miaotai,Zhao, Xining,Biswas, Asim,et al. Measurements and modeling of hydrological responses to summer pruning in dryland apple orchards[J]. JOURNAL OF HYDROLOGY,2021,594:13.
APA	Ye, Miaotai.,Zhao, Xining.,Biswas, Asim.,Huo, Gaopeng.,Yang, Bo.,...&Gao, Xiaodong.(2021).Measurements and modeling of hydrological responses to summer pruning in dryland apple orchards.JOURNAL OF HYDROLOGY,594,13.
MLA	Ye, Miaotai,et al."Measurements and modeling of hydrological responses to summer pruning in dryland apple orchards".JOURNAL OF HYDROLOGY 594(2021):13.