globalchange  > 气候变化事实与影响
DOI: 10.1080/00103624.2019.1589483
WOS记录号: WOS:000466940700007
论文题名:
Soil Carbon Sequestration in Long-Term Fertilization Under Jute-Rice-Wheat Agro-Ecosystem
作者: Singh, A. K.; Behera, M. S.; Mazumdar, S. P.; Kundu, D. K.
通讯作者: Singh, A. K.
刊名: COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
ISSN: 0010-3624
EISSN: 1532-2416
出版年: 2019
卷: 50, 期:6, 页码:739-748
语种: 英语
英文关键词: Carbon sequestration ; jute-rice-wheat system ; long-term fertilization ; RothC model
WOS关键词: ORGANIC-CARBON ; ROTHC MODEL ; MANAGEMENT INDEX ; FRACTIONS ; STORAGE
WOS学科分类: Agronomy ; Plant Sciences ; Chemistry, Analytical ; Soil Science
WOS研究方向: Agriculture ; Plant Sciences ; Chemistry
英文摘要:

Soil organic carbon (SOC) sequestration in response to long-term fertilizer management practices under jute-rice-wheat agro-ecosystem in alluvial soils was studied using a modeling approach. Fertilizer management practices included nitrogen (N), phosphorus (P) and potassium (K) fertilization, manure application, and root-stubble retention of all three crops. Soil carbon (C) model RothC was used to simulate the critical C input rates needed to maintain initial soil C level in long timescale (44 years). SOC change was significantly influenced by the long-term fertilizer management practices and the edaphic variable of initial SOC content. The effects of fertilizer combination 100%NPK+FYM on SOC changes were most significant over 100%NPK fertilization. If the 100% NPK fertilizer along with manure applied with stubble and roots retention of all crops, alluvial soils of such agro-ecosystem would act as a net C sink, and the average SOC density kept increasing from 18.18 Mg ha(-1) during 1972 to the current average of approximate to 22 Mg ha(-1) during 2065 s. On an average, the critical C input was estimated to be 5.30 Mg C ha(-1) yr(-1), depending on local soil and climatic conditions. The critical C input could be effectively estimated using a summary model driven by current SOC level, mean annual temperature, precipitation, and soil clay content. Such information will provide a baseline for assessing soil C dynamics under potential changes in fertilizer and crop residues management practices, and thus enable development of management strategies for effectively mitigating climate change through soil C sequestration.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/132391
Appears in Collections:气候变化事实与影响

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作者单位: ICAR Cent Res Inst Jute & Allied Fibres CRIJAF, Crop Prod Div, Kolkata 700120, W Bengal, India

Recommended Citation:
Singh, A. K.,Behera, M. S.,Mazumdar, S. P.,et al. Soil Carbon Sequestration in Long-Term Fertilization Under Jute-Rice-Wheat Agro-Ecosystem[J]. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,2019-01-01,50(6):739-748
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