基于医学CT和工业CT扫描研究土壤大孔隙结构特征的区别

doi:10.11924/j.issn.1000-6850.casb15120003

中国农学通报 ›› 2016, Vol. 32 ›› Issue (14): 106-111.doi: 10.11924/j.issn.1000-6850.casb15120003

• 资源环境生态土壤气象 • 上一篇下一篇

基于医学CT和工业CT扫描研究土壤大孔隙结构特征的区别

刘勇,胡霞,李宗超,孙贞婷

(北京师范大学减灾与应急管理研究院/环境演变与自然灾害教育部重点实验室,北京 100875）

收稿日期:2015-12-01 修回日期:2015-12-25 接受日期:2016-01-25 出版日期:2016-05-17 发布日期:2016-05-17
通讯作者: 胡霞
基金资助:
国家自然科学基金“根系对灌丛化草地土壤大孔隙形成及水分运移的影响”(41471018)；国家自然科学基金重点项目“青海湖流域生态水文过程与水分收支研究”(41130640)。

Difference of Soil Macropore Structure Scanned by Medical CT and Industrial CT

Liu Yong, Hu Xia, Li Zongchao, Sun Zhenting

(Academy of Disaster Reduction and Emergency Management, Beijing Normal University/Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing 100875)

Received:2015-12-01 Revised:2015-12-25 Accepted:2016-01-25 Online:2016-05-17 Published:2016-05-17

摘要/Abstract

摘要： 为探究医学CT与工业CT在土壤大孔隙特征扫描研究应用的区别，选取青海地区金露梅灌丛原状土壤样品，分别采用医学和工业2种CT对其进行扫描，通过对扫描图像的分析和处理，对比分析2种CT扫描的断层图像质量、土壤大孔隙三维图像以及孔隙度特征3个方面特征，分析2种CT研究土壤大孔隙特征的差异。研究结果表明：（1）从扫描土壤横断面图像质量来看，工业CT的图像质量要明显高于医学CT图像；（2）2种CT图像经处理堆栈出的三维图像在形态上相似，但是工业CT解析出的三维图能更好地体现出不同深度的土壤孔隙分布；（3）2种CT图像经处理得到的孔隙度，随着土壤深度的变化，其特征在整体趋势上大致相同，但工业CT能更准确地反映较深层次土壤的孔隙度。因此可以根据不同的需求选择适宜的CT。

关键词: 水稻纹枯病, 水稻纹枯病, 立枯丝核菌, 致病机理, 毒素, 细胞壁降解酶

Abstract: In order to explore the difference between medical CT and industrial CT in their application to soil macropore structure scanning, the original state soil sample under bush cinquefoil from Qinghai was scanned by medical CT and industrial CT, the quality of faultage image, three-dimensional image of macropore and macropore structure were analyzed. The results showed that: (1) the quality of industrial CT faultage image was higher than that of medical CT; (2) three-dimensional images of the two kinds of CT treatments were similar, but industrial CT image could reflect the distribution of soil macropore in different soil layers more clearly; (3) the porosity of the two kinds of CT treatment images had the same tendency with the increase of soil depth, but industrial CT could reflect deeper soil porosity more accurately. Appropriate CT treatment could be chosen according to different requirements.

刘勇,胡霞,李宗超,孙贞婷. 基于医学CT和工业CT扫描研究土壤大孔隙结构特征的区别[J]. 中国农学通报, 2016, 32(14): 106-111.

Liu Yong,Hu Xia,Li Zongchao and Sun Zhenting. Difference of Soil Macropore Structure Scanned by Medical CT and Industrial CT[J]. Chinese Agricultural Science Bulletin, 2016, 32(14): 106-111.

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基于医学CT和工业CT扫描研究土壤大孔隙结构特征的区别

Difference of Soil Macropore Structure Scanned by Medical CT and Industrial CT

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