| 免耕对农田土壤N_2O排放影响及作用机制研究进展 |
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| 引用本文： | 蔡延江,丁维新,项剑.免耕对农田土壤N_2O排放影响及作用机制研究进展[J].土壤通报,2012(4):1013-1018. |
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| 作者姓名： | 蔡延江 丁维新 项剑 |
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| 作者单位： | 中国科学院 南京土壤研究所,土壤与农业可持续发展国家重点实验室;中国科学院研究生院 |
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| 基金项目： | 国家自然科学基金项目(40971134);中国科学院知识创新重要方向性项目(KZCX2-YW-439)赞助 |
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| 摘 要： | 免耕在促进农业可持续发展和有效分馏大气碳的同时还可影响土壤N2O排放,但迄今为止关于免耕对农田土壤N2O排放影响的研究结果却不尽一致,正效应间或负效应都存在。本文综述了免耕条件下土壤理化性状和生物性状的变化及其对N2O排放的影响,并指出实施免耕后土壤反硝化强度变化程度的不同是导致免耕对N2O排放影响效应不同的主要原因,最后提出了一些有待研究的问题。
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| 关 键 词： | 氧化亚氮 硝化 反硝化 土壤动物 温室气体 |
Effects of No-Tillage on Agricultural Soil N2O Emissions:A Review |
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| CAI Yan-jiang,DING Wei-xin,XIANG Jian.Effects of No-Tillage on Agricultural Soil N2O Emissions:A Review[J].Chinese Journal of Soil Science,2012(4):1013-1018. |
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| Authors: | CAI Yan-jiang DING Wei-xin XIANG Jian |
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| Institution: | 1,2(1.State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China;2.Graduate School of the Chinese Academy of Sciences,Beijing 100049,China.) |
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| Abstract: | No-tillage has been promoted as an agricultural practice for enhancing agricultural sustainability and soil organic carbon sequestration concomitant with influencing on soil N2O emissions.However,conclusions on the effects of no-tillage on N2O emissions are inconsistent,which could be either positive or negative.In this paper,a review was presented to summarize the effects of no-tillage on soil physicochemical and biological properties and subsequent N2O emissions,and show the conflicting effects of no-tillage on soil N2O emissions being mainly attributed to the discrepant changes in denitrification intensity after conventional tillage's conversion into no-tillage.This review also put forward the perspective for the further study. |
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| Keywords: | Nitrous oxide Nitrification Denitrification Soil fauna Greenhouse gas |
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