DOI: 10.1016/j.scitotenv.2019.136438
论文题名: Elevated CO2 improved soil nitrogen mineralization capacity of rice paddy
作者: Wu Q. ; Zhang C. ; Liang X. ; Zhu C. ; Wang T. ; Zhang J.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 710 语种: 英语
英文关键词: C: N
; Free-air CO2 enrichment
; Paddy soil
; Soil potential mineralized nitrogen
Scopus关键词: Agriculture
; Carbon dioxide
; Fertilizers
; Integral equations
; Nitrogen
; Organic carbon
; Regression analysis
; Soils
; Sustainable development
; Agricultural productions
; CO2 enrichment
; First order kinetic equations
; Paddy soils
; Positive correlations
; Soil potential
; Soil-nitrogen mineralization
; Sustainable agriculture
; Mineralogy
; agricultural production
; agricultural soil
; alternative agriculture
; carbon dioxide
; carbon dioxide enrichment
; cultivar
; elevation
; global change
; mineralization
; paddy field
; soil nitrogen
英文摘要: Elevated CO2 would increase rice yields and may lead to nitrogen limitation and potentially influence the sustainability of agricultural production. Blindly increasing the amount of chemical fertilizer will damage the environment and is very unwise. Therefore, clarifying the response of soil nitrogen mineralization capacity to elevated CO2 is critical for both sustainable agriculture production and environmental protection. Here, we relied on Free-Air CO2 Enrichment (FACE) platform and used a waterlogged incubation method to investigate the effects of elevated CO2 on soil nitrogen mineralization capacity under different fertilization levels when planted different rice cultivars (strong and weak-CO2 response rice). According to the first-order kinetic equation fitting, compared with Ambient, elevated CO2 increased soil potential mineralized nitrogen (Np) by 16.18%. Path analysis indicated that fertilization status, rice cultivar, soil organic carbon and soil C: N ratio might affect Np. There was a significant positive correlation between soil nitrogen mineralization rate and Np. Under different fertilization conditions and rice cultivars, the improvement degree of soil nitrogen mineralization capacity (Np and soil nitrogen mineralization rate) by elevated CO2 was different. These findings suggest that more parameters and influencing factors should be taken into account when studying soil nitrogen cycle models under the condition of global change. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158638
Appears in Collections: 气候变化与战略
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作者单位: State Experimental Station of Agro-ecosystem in Fengqiu, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China; Bureau of Natural Resources of Tongyu County, Baicheng CityJilin Province 137200, China
Recommended Citation:
Wu Q.,Zhang C.,Liang X.,et al. Elevated CO2 improved soil nitrogen mineralization capacity of rice paddy[J]. Science of the Total Environment,2020-01-01,710