Importance of subsurface fluxes of water, nitrogen and phosphorus from rice paddy fields relative to surface runoff

doi:10.1016/j.agwat.2018.11.005

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Importance of subsurface fluxes of water, nitrogen and phosphorus from rice paddy fields relative to surface runoff
	Fu, Jin 1; Wu, Yali 1; Wang, Qihui 1; Hu, Kelin 2; Wang, Shiqin 3; Zhou, Minghua4 ; Hayashi, Kentaro 5; Wang, Hongyuan 6; Zhan, Xiaoying 7; Jian, Yiwei 1
刊名	AGRICULTURAL WATER MANAGEMENT
	2019-03-01
卷号	213 页码:627-635
关键词	Nitrogen Phosphorous Leaching Surface runoff Paddy rice Hydroclimatic condition
ISSN号	0378-3774
DOI	10.1016/j.agwat.2018.11.005
通讯作者	Zhou, Feng(zhouf@pku.edu.cn) ; Zhu, Jianqiang()
英文摘要	Rice paddy fields pose a high risk of water pollutions for the surrounding waterbodies through surface runoff and subsurface fluxes. Compared to surface runoff, subsurface flux from rice paddy fields has received less attention and is still poorly quantified, mainly due to low-frequency measurements at field scale and limited modeling capability at regional scale. Here we proposed a simplified modeling approach to estimate the subsurface fluxes of water, nitrogen (N) and phosphorus (P) from rice paddy fields and examined their relative importance compared to surface runoff. This model was established based on the high-frequency field measurements over two rice growing seasons in central China and the extended datasets across the East Asia. Two-year site-based observations indicate the significance of subsurface fluxes of water (737-785 mm season(-1)), N (28.5-40.0 kg N ha(-1)) and P (0.7-4.3 kg P ha(-1)) compared to those of surface runoff (178-199 nun season(-1) , 4.5-12.9 kg N ha(-1), 0.5-2.6 kg P ha(-1)). Our regional estimations in the East Asia reveal that subsurface fluxes from rice paddy fields were comparable with surface fluxes, primarily controlled by the magnitude of seasonal precipitation. Subsurface fluxes were the dominant pathway of nutrient losses in drier rice cropping areas, while surface runoff was the more important process in wetter areas. In the light of the regional differences, we suggest that a spatially flexible set of policies for mitigating nutrient losses from rice paddy fields would be beneficial for the future water-quality improvements in the surrounding waterbodies.
资助项目	National Key Research and Development Program of China[2016YFD0800501] ; National Natural Science Foundation of China[41671464] ; National Natural Science Foundation of China[41530528] ; China Postdoctoral Science Foundation[2017M620503] ; 111 Project[B14001]
WOS关键词	GREENHOUSE-GAS EMISSIONS ; LEACHING LOSSES ; NITRATE ; GROUNDWATER ; IRRIGATION ; MANAGEMENT ; WHEAT ; DRAINAGE ; BALANCE ; SYSTEM
WOS研究方向	Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000457952700058
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; 111 Project
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/25208]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	Zhou, Feng; Zhu, Jianqiang
作者单位	1.Peking Univ, Coll Urban & Environm Sci, Lab Earth Surface Proc, Sino France Inst Earth Syst Sci, Beijing 100871, Peoples R China 2.China Agr Univ, Coll Resources & Environm Sci, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Shijiazhuang, Hebei, Peoples R China 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 5.Natl Agr & Food Res Org, Inst Agroenvironm Sci, Div Biogeochem Cycles, 3-1-3 Kannondai, Tsukuba, Ibaraki 3058604, Japan 6.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China 7.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China 8.Yangtze Univ, Coll Agr, Jingzhou 434025, Peoples R China 9.Jingzhou Agrometeorol Expt Stn, Jingzhou 434025, Peoples R China
推荐引用方式 GB/T 7714	Fu, Jin,Wu, Yali,Wang, Qihui,et al. Importance of subsurface fluxes of water, nitrogen and phosphorus from rice paddy fields relative to surface runoff[J]. AGRICULTURAL WATER MANAGEMENT,2019,213:627-635.
APA	Fu, Jin.,Wu, Yali.,Wang, Qihui.,Hu, Kelin.,Wang, Shiqin.,...&Zhu, Jianqiang.(2019).Importance of subsurface fluxes of water, nitrogen and phosphorus from rice paddy fields relative to surface runoff.AGRICULTURAL WATER MANAGEMENT,213,627-635.
MLA	Fu, Jin,et al."Importance of subsurface fluxes of water, nitrogen and phosphorus from rice paddy fields relative to surface runoff".AGRICULTURAL WATER MANAGEMENT 213(2019):627-635.