Effects of ph-induced changes in soil physical characteristics on the development of soil water erosion

Shinji Matsumoto, Shunta Ogata, Hideki Shimada, Takashi Sasaoka, Akihiro Hamanaka, Ginting Jalu Kusuma

研究成果: Contribution to journalArticle査読

11 被引用数 (Scopus)

抄録

Soil water erosion is frequently reported as serious problem in soils in Southeast Asia with tropical climates, and the variations in pH affect the development of the erosion. This study investigated the effects of changes in pH on soil water erosion based on changes in the physical properties of the simulated soils with pH adjusted from 2.0 to 10.0 through artificial rainfall tests. The zeta potential was entirely shifted to positive direction at each pH condition due to Al, Ca, and Mg. In the pH range of 6.0 to 2.0, the aggregation of soil particles resulting from the release of Al3+ from clay minerals and/or molecular attraction between soil particles caused the plastic index (IP) of the soil to decrease. The decrease in IP led to the development of soil water erosion at the pH range. When the pH exceeded 6.0, the repulsive force generated by the negative charges on soil particles decreased IP, resulting in accelerated erosion by water. The results suggest that changes in pH causes physical properties of the soil to change through changes of the zeta potential in the clayey soil rich in Al, Ca, and Mg, leading to the development of soil water erosion.

本文言語英語
論文番号134
ジャーナルGeosciences (Switzerland)
8
4
DOI
出版ステータス出版済み - 4 16 2018

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

フィンガープリント 「Effects of ph-induced changes in soil physical characteristics on the development of soil water erosion」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル