Expansion of soil void study using X-ray stereoradiography

使用 X 射线立体放射摄影术扩展土壤空隙研究

• 批准号: 12460103
• 负责人: SASAKI Choichi
• 金额: $ 4.61万
• 依托单位: Hirosaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12460103/
• 关键词: Pore systems formed by roots; Plant opal; Paddy field of Yayoi era; Endurance of voids; voids; Facies fossil

In this study, we investigated the characteristic of continuity and the actual condition of pore systems formed by roots in the paddy field at Yayoi period and so on by using X-ray stereo radiographic method that originated by Tokunaga K. The results summarized as follows.Changes of physical properties and shape of pore systems formed by roots on vertical profile at volcanic ash soil area were small in 1m range but became large over 1m range. Also, it was not recognized discontinuity and disappear of pore systems formed by roots in the pumice stone and at the border of the layers. Density of the pore systems formed by roots at Japan paddy field decreased in order of plow-sole, subsoil and plow layer. Also in Thailand paddy field, we recognized same trend at Japan.We detected the detailed image of pore systems found by roots in every layer of the paddy field of the Yayoi era at the ruins of Ikezima-Fukumannge that was situated at Oosaka-fu. Also we recognized good reservation of those p … More ore systems formed by roots. As compared with recent paddy field, it suggested the possibility that was puddling and transplantation of rice plants in the early years of the Yayoi era.Endurance characteristic of pore systems formed by roots was investigated with the passage of time at the area of volcanic ash in Iwate prefecture that had deposited from seven hundred thousand years to one million and seven hundred thousand years (Pleistocene). As a result, it was clear expect the lowest layer that every layer had pore systems formed by roots was recognized and existence era of the pore systems formed by roots was over four hundred thousand years. On volcanic ash from Mt. Towada and Mt. Hakkoda that deposited from ten thousand years to eleven hundred thousand years ago, that pore systems formed by roots couldn't find decline.Relationship (like the possibility of facies fossil) between pore systems formed by roots and plant opal was investigated. As a result, relationship of between the change of plant opal in the vertical profile and that of pore systems formed by roots was recognized. By using pore system formed by roots, it was possible to guess the palaeoclimate at the spot. Less

本研究利用德永光介等提出的X射线立体照相方法，对弥生时代等稻田中根系形成的孔隙系统的连续性特征和实际状况进行了研究。结果表明：火山灰土壤区根系形成的孔隙系统在垂直剖面上的物理性质和形态变化在1 m范围内变化较小，超过1 m后变化较大;同时，未发现根在浮石中及层间边界处形成的孔隙系统的间断和消失。日本稻田根系形成的孔隙系统密度按犁底层>底土>耕层的顺序递减。同样在泰国的稻田中，我们也发现了日本的同样趋势。我们在位于大坂府的池子岛遗址的弥生时代稻田的每一层中都检测到了根系发现的孔隙系统的详细图像。我们还认识到， ...更多信息 由根形成的矿系。与现代稻田相比，弥生时代早期的稻田可能是水稻的翻土和移栽。在岩手县火山灰沉积70万年至170万年（更新世）的地区，随着时间的推移，调查了根系形成的孔隙系统的耐久性特征。结果表明，除最底层外，各层均有根系形成的孔隙系统，根系形成的孔隙系统存在的时代超过40万年。火山灰的影响。十和田和山研究表明，在1 ~ 110万年前沉积的八甲田中，根形成的孔隙系统未发现衰退现象，并探讨了根形成的孔隙系统与植物蛋白石的关系（类似于相化石的可能性）。研究结果表明，植物欧泊在垂直剖面上的变化与根系形成的孔隙系统的变化有一定的关系。利用根系所形成的孔隙系统，可以推测该地区的古气候。少

项目成果

Sasaki, C., Tokunaga, K., Sase, T., Sato, K.: "Influence of the difference of soil-forming process on the chabge of pore distribution"Transaction of 17th ICSS (CD=ROM). No.1093. 1-6 (2002)

Sasaki, C.、Tokunaga, K.、Sase, T.、Sato, K.：“成土过程差异对孔隙分布变化的影响”第 17 届 ICSS 交易（CD=ROM）。

Choichi Sasaki et al.: "Stndies an the correlation between percolation pattern and soluble elements in downward water using a stratified paddy field model."CIGRWORLD CONGRESS 2000. 2000年号. 1181-1184 (2000)

Choichi Sasaki 等人：“使用分层稻田模型研究了渗透模式与向下水中的可溶性元素之间的相关性。”2000 年 CIGRWORLD CONGRESS 1181-1184（2000 年）。

Sasaki Choichi, Koseki Kyo, Matuyama Nobuhiko et al.: "Studies on the correlation between percolation pattern and soluble elements in downward water using a stratified paddy field model"THE XIV MEMORIAL CIGR WORLD CONGRESS. 2. 1184-1189 (2000)

Sasaki Choichi、Koseki Kyo、Matuyama Nobuhiko 等人：“使用分层稻田模型研究渗透模式与向下水中可溶性元素之间的相关性”第十四届纪念 CIGR 世界大会。

Sasaki Choichi, Koseki Kyo, Matuyama Nobuhiko, et al.: "Studies on the correlation between percolation pattern and soluble elements in downward water using a stratified paddy field model"THE XIV MEMORIAL CIGR WORLD CONGRESS. Vol. 2. 1184-1189 (2000)

Sasaki Choichi、Koseki Kyo、Matuyama Nobuhiko 等人：“使用分层稻田模型研究渗流模式与向下水中可溶性元素之间的相关性”第十四届纪念 CIGR 世界大会。

Sasaki Choichi, Koh-ichi Tokunaga, Tkase Sase et al.: "Influence of the differnce of soil-forming process on the change of pore distribution"Transaction of 17th ICSS, CD-ROM. Symposium22. 1-6 (2002)

Sasaki Choichi，Koh-ichi Tokunaga，Tkase Sase等：“成土过程差异对孔隙分布变化的影响”第17届ICSS交易，CD-ROM。