基于同步辐射微CT研究不同利用年限水稻土团聚体微结构特征
同步辐射微CT（SRμ-CT）可以无损获取高分辨率、强对比度的内部结构图像,是研究土壤团聚体三维微结构的有效手段。本研究采集了种植水稻20a和40a后表层土壤团聚体样品,应用SRμ-CT扫描获取了9μm分辨率的团聚体内部结构图像,然后应用CT图像处理方法和3DMA-Rock软件观察并定量分析了团聚体微结构特征。随着种植水稻年限的增加,土壤有机质含量和全氮含量显著增加,团聚体孔隙数量和孔隙度显著增加,比表面积显著增大。种植水稻20a的土壤团聚体呈现致密的黏闭结构,而种植水稻40a的土壤团聚体具有由团粒状小团聚体构成的复杂多孔微结构。结果表明随着种植年限的增加,团聚体微结构和土壤质量明显改善。...
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| Published in | 农业工程学报 Vol. 27; no. 12; pp. 343 - 347 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008%上海光源(中国科学院上海应用物理研究所),上海,201204
2011
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-6819 |
| DOI | 10.3969/j.issn.1002-6819.2011.12.064 |
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| Abstract | 同步辐射微CT（SRμ-CT）可以无损获取高分辨率、强对比度的内部结构图像,是研究土壤团聚体三维微结构的有效手段。本研究采集了种植水稻20a和40a后表层土壤团聚体样品,应用SRμ-CT扫描获取了9μm分辨率的团聚体内部结构图像,然后应用CT图像处理方法和3DMA-Rock软件观察并定量分析了团聚体微结构特征。随着种植水稻年限的增加,土壤有机质含量和全氮含量显著增加,团聚体孔隙数量和孔隙度显著增加,比表面积显著增大。种植水稻20a的土壤团聚体呈现致密的黏闭结构,而种植水稻40a的土壤团聚体具有由团粒状小团聚体构成的复杂多孔微结构。结果表明随着种植年限的增加,团聚体微结构和土壤质量明显改善。 |
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| AbstractList | 同步辐射微CT（SRμ-CT）可以无损获取高分辨率、强对比度的内部结构图像,是研究土壤团聚体三维微结构的有效手段。本研究采集了种植水稻20a和40a后表层土壤团聚体样品,应用SRμ-CT扫描获取了9μm分辨率的团聚体内部结构图像,然后应用CT图像处理方法和3DMA-Rock软件观察并定量分析了团聚体微结构特征。随着种植水稻年限的增加,土壤有机质含量和全氮含量显著增加,团聚体孔隙数量和孔隙度显著增加,比表面积显著增大。种植水稻20a的土壤团聚体呈现致密的黏闭结构,而种植水稻40a的土壤团聚体具有由团粒状小团聚体构成的复杂多孔微结构。结果表明随着种植年限的增加,团聚体微结构和土壤质量明显改善。 S152.4; 同步辐射微CT (SRμ-CT)可以无损获取高分辨率、强对比度的内部结构图像,是研究土壤团聚体三维微结构的有效手段.本研究采集了种植水稻20 a和40 a后表层土壤团聚体样品,应用SRμ-CT扫描获取了9μm分辨率的团聚体内部结构图像,然后应用CT图像处理方法和3DMA-Rock软件观察并定量分析了团聚体微结构特征.随着种植水稻年限的增加,土壤有机质含量和全氮含量显著增加,团聚体孔隙数量和孔隙度显著增加,比表面积显著增大.种植水稻20 a的土壤团聚体呈现致密的黏闭结构,而种植水稻40 a的土壤团聚体具有由团粒状小团聚体构成的复杂多孔微结构.结果表明随着种植年限的增加,团聚体微结构和土壤质量明显改善. |
| Author | 周虎 彭新华 张中彬 王亮亮 肖体乔 彭冠云 |
| AuthorAffiliation | 土壤与农业可持续发展国家重点实验室（中国科学院南京土壤研究所）,南京210008 上海光源（中国科学院上海应用物理研究所）,上海201204 |
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| Author_FL | Wang Liangliang Peng Guanyun Zhou HU Xiao Tiqiao Zhang Zhongbin Peng Xinhua |
| Author_FL_xml | – sequence: 1 fullname: Zhou HU – sequence: 2 fullname: Peng Xinhua – sequence: 3 fullname: Zhang Zhongbin – sequence: 4 fullname: Wang Liangliang – sequence: 5 fullname: Xiao Tiqiao – sequence: 6 fullname: Peng Guanyun |
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| DOI | 10.3969/j.issn.1002-6819.2011.12.064 |
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| DocumentTitleAlternate | Characterization of aggregate microstructure of paddy soils cultivated for different years with synchrotron based micro-CT |
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| Keywords | 微CT 微结构 团聚体 水稻土 孔隙 土壤 |
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| Notes | 11-2047/S Zhou Hu, Peng Xinhua, Zhang Zhongbin, Wang Liangliang, Xiao Tiqiao, Peng Guanyun （1. State Key Laboratory of Soil and Sustainable Agriculture （Institute of Soil Science, Chinese Academy of Sciences）, Nanjing 210008, China; 2. Shanghai Synchrotron Radiation Facility （SSRF）, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China） soils; aggregates; microstructure; micro-CT; paddy soil; pore Synchrotron based X-ray micro-computed tomography （SRμ-CT） can nondestructively capture images of the interior structure with high resolution and strong contrast, and is therefore an excellent tool to investigate the 3-D microstructure of soil aggregates. Aggregates with diameters around 5 mm were collected from paddy soils with rice cultivation for 20 and 40 years, respectively, and the aggregates were scanned with SRμ-CT at a resolution of 9 μm. Aggregate microstructure was visualized and quantified using digital image analysis method and 3DMA-Rock software. Results showed the SOM |
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| PublicationTitle | 农业工程学报 |
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| Publisher | 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008%上海光源(中国科学院上海应用物理研究所),上海,201204 |
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| Snippet | ... S152.4; 同步辐射微CT (SRμ-CT)可以无损获取高分辨率、强对比度的内部结构图像,是研究土壤团聚体三维微结构的有效手段.本研究采集了种植水稻20 a和40... |
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| SubjectTerms | 团聚体 土壤 孔隙 微CT 微结构 水稻土 |
| Title | 基于同步辐射微CT研究不同利用年限水稻土团聚体微结构特征 |
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