Organic fertilizer reduced carbon and nitrogen in runoff and buffered soil acidification in tea plantations: Evidence in nutrient contents and isotope fractionations

doi:10.1016/j.scitotenv.2020.143059

	Organic fertilizer reduced carbon and nitrogen in runoff and buffered soil acidification in tea plantations: Evidence in nutrient contents and isotope fractionations
	Xie, Shaowen 2; Yang, Fen 1; Feng, Hanxiao 1,3; Yu, Zhenzhen 1,3; Liu, Chengshuai 2,4; Wei, Chaoyang 1; Liang, Tao 1
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-03-25
卷号	762 页码:10
关键词	Tea plantation Compound fertilizer Rapeseed cake organic fertilizer Runoff water Carbon and nitrogen isotopes
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.143059
通讯作者	Wei, Chaoyang(weicy@igsnrr.ac.cn)
英文摘要	Carbon (C) and nitrogen (N) inputs to farmland via fertilizer application are potential sources of C and N that influence soil acidification and water eutrophication. A pilot study was conducted to compare the effects of compound fertilizer and rapeseed cake organic fertilizer on C and N preservation in the soils and runoff of a tea plantation as well as the C and N isotopic fractionation in soils over the three annual cycles of fertilization and tea-leaf harvest. Overall, rapeseed cake organic fertilization effectively increased the pH, total organic matter, NH4-N and NO3-N in soils by 2.19-4.29%, 8.04-21.14%, 53.65-100.32% and 5.74-54.08%, respectively, but decreased NH4-N inputs in runoff by 10.36-25.12% and NO3-N inputs in runoff by 8.94-24.10% relative to the same rate of pure N in compound fertilizer. Before fertilization in February, the average delta C-13 and delta N-15 were -25.15 parts per thousand and 1.88 parts per thousand, while after a full year of fertilization and tea-leaf harvesting in October, the average soil delta C-13 and delta N-15 contents were -23.83 parts per thousand and -0.33 parts per thousand after compound fertilization and -26.22 parts per thousand and 1.64 parts per thousand after rapeseed cake organic fertilization, respectively, indicating the evident effects of fertilization on the isotopic fractionation in soil. In addition, the fractionation extent was positively associated with the fertilization rates under both fertilizers. However, the two fertilization types had different effects on the C and N isotope fractionations, with rapeseed cake organic fertilization contributing more to delta C-13 (21.07-81.80%) but less to delta N-15 (18.20-78.93%) and compound fertilization presenting the opposite results (1.88-46.18% and 53.82-98.12%, respectively). This study demonstrates that rapeseed cake organic fertilization can better preserve soil C and N pools while reducing their runoff in tea plantations, which may greatly hinder the regional soil acidification and water eutrophication trends. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	State Key Research and Development Program of China Dual reductions of chemical fertilizer and pesticides in tea garden: evaluation of the environmental effects and modelling optimization[2016YFD0201208] ; State Key Research and Development Program of China[2018YFD080041] ; Science and Technology Planning Project of Guangdong Province, China[2017BT01Z176] ; Science and Technology Planning Project of Guangdong Province, China[2016TX03Z086] ; GDAS' Project of Science and Technology Development[2020GDASYL-20200103083] ; GDAS' Project of Science and Technology Development[2020GDASYL-20200301003]
WOS关键词	MINERAL-NITROGEN ; GREEN TEA ; DYNAMICS ; LOSSES ; FIELD ; PHOSPHORUS ; MANURE ; IMPACT ; C-13 ; STABILIZATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000607910300006
资助机构	State Key Research and Development Program of China Dual reductions of chemical fertilizer and pesticides in tea garden: evaluation of the environmental effects and modelling optimization ; State Key Research and Development Program of China ; Science and Technology Planning Project of Guangdong Province, China ; GDAS' Project of Science and Technology Development
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136332]
专题	中国科学院地理科学与资源研究所
通讯作者	Wei, Chaoyang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Guangdong Acad Sci, Natl Reg Joint Engn Res Ctr Soil Pollut Control &, Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China
推荐引用方式 GB/T 7714	Xie, Shaowen,Yang, Fen,Feng, Hanxiao,et al. Organic fertilizer reduced carbon and nitrogen in runoff and buffered soil acidification in tea plantations: Evidence in nutrient contents and isotope fractionations[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,762:10.
APA	Xie, Shaowen.,Yang, Fen.,Feng, Hanxiao.,Yu, Zhenzhen.,Liu, Chengshuai.,...&Liang, Tao.(2021).Organic fertilizer reduced carbon and nitrogen in runoff and buffered soil acidification in tea plantations: Evidence in nutrient contents and isotope fractionations.SCIENCE OF THE TOTAL ENVIRONMENT,762,10.
MLA	Xie, Shaowen,et al."Organic fertilizer reduced carbon and nitrogen in runoff and buffered soil acidification in tea plantations: Evidence in nutrient contents and isotope fractionations".SCIENCE OF THE TOTAL ENVIRONMENT 762(2021):10.