IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Carbon budget and greenhouse gas balance during the initial years after rice paddy conversion to vegetable cultivation
Wu, Lei1; Wu, Xian1; Lin, Shan1; Wu, Yupeng1; Tang, Shuirong1; Zhou, Minghua2; Shaaban, Muhammad1; Zhao, Jinsong1; Hu, Ronggui1; Kuzyakov, Yakov1,3,4,5; Wu, Jinshui6
2018-06-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume627Pages:46-56
AbstractRice paddy conversion to vegetable production is a common agricultural practice driven by economic benefits and shifting diets. However, little is known on the initial effects of this land-use conversion on net ecosystem carbon budget (NECB) and greenhouse gas (GHG) balance. Annual NECB and emissions of CH4 and N2O were measured from a native double rice cropping system (Rice) and a vegetable field recently converted from rice paddy (Veg) under no nitrogen (N) fertilization (Rice-N-0 and Veg-N-0) and conventional N fertilization (Rice-N+ and Veg-N+) during the initial four years upon conversion in subtropical China. Land-use conversion from rice to vegetable cultivation led to substantial C losses (2.6 to 4.5 Mg C ha(-1) yr(-1)), resulting from strongly reduced C input by 44-52% and increased soil organic matter mineralization by 46-59% relative to Rice. The magnitude of C losses from Veg was highest in the first year upon conversion, and showed a decreasing trend over time. N fertilization shifted rice paddy from a slight C source in Rice-N-0 (-1.0 Mg C ha(-1) yr(-1)) to a significant C sink in Rice-N+ (1.1 Mg C ha(-1) yr(-1)) and alleviated the impact of land-use conversion on C loss via increased C input from higher crop productivity. Land-use conversion greatly increased the global warming potential (GWP) from Veg by 116-395% relative to Rice in the first year, primarily due to increased C losses and N2O emission outweighing the decreased CH4 emission. However, the GWP did not show obvious difference between Rice and Veg in the following years. Nfertilization and land-use conversion interactively increased GWP in the first year via increased N2O production. Concluding, NECB and GHG emissions in the first year after conversion are crucial and should be considered when evaluating the environmental consequences of land-use conversion. (C) 2018 Elsevier B.V. All rights reserved.
KeywordLand-use conversion Net ecosystem carbon budget CH4 N2O Greenhouse gas balance
DOI10.1016/j.scitotenv.2018.01.207
WOS KeywordLAND-USE CHANGE ; UPLAND CROPPING SYSTEMS ; SOIL ORGANIC-MATTER ; FERTILIZATION DECREASES ; NITROGEN-FERTILIZATION ; SOUTHEAST CHINA ; CLIMATE-CHANGE ; FIELD ; EMISSIONS ; ROTATION
Language英语
Funding ProjectNational Program on Key Basic Research Project of China[2012CB417106] ; National Science Foundation of China[41671253] ; Fundamental Research Fund for the Central Universities[2662016PY098]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000431848500006
Funding OrganizationNational Program on Key Basic Research Project of China ; National Science Foundation of China ; Fundamental Research Fund for the Central Universities
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/22997
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorHu, Ronggui
Affiliation1.Huazhang Agr Univ, Coll Resources & Environm, Wuhan 430070, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
3.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Busgenweg 2, D-37077 Gottingen, Germany
4.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia
5.RUDN Univ, Agrotechnol Inst, Moscow, Russia
6.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China
Recommended Citation
GB/T 7714
Wu, Lei,Wu, Xian,Lin, Shan,et al. Carbon budget and greenhouse gas balance during the initial years after rice paddy conversion to vegetable cultivation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,627:46-56.
APA Wu, Lei.,Wu, Xian.,Lin, Shan.,Wu, Yupeng.,Tang, Shuirong.,...&Wu, Jinshui.(2018).Carbon budget and greenhouse gas balance during the initial years after rice paddy conversion to vegetable cultivation.SCIENCE OF THE TOTAL ENVIRONMENT,627,46-56.
MLA Wu, Lei,et al."Carbon budget and greenhouse gas balance during the initial years after rice paddy conversion to vegetable cultivation".SCIENCE OF THE TOTAL ENVIRONMENT 627(2018):46-56.
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