Comparison of Structural Stability and Erodibility of the Purple and Loess Soils Based on Le Bissonnais Method
This paper aims to study structural differences and anti-erodibility properties of purple and loess soils in hilly terrains of southern and northern China. Yoder's method and Le Bissonnais method were used to determine the distribution of soil particle sizes, mean weight diameter (MWD), and geo...
Gespeichert in:
Veröffentlicht in: | Nature environment and pollution technology 2020-12, Vol.19 (4), p.1617-1626 |
---|---|
Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | This paper aims to study structural differences and anti-erodibility properties of purple and loess soils in hilly terrains of southern and northern China. Yoder's method and Le Bissonnais method were used to determine the distribution of soil particle sizes, mean weight diameter (MWD), and geometric mean diameter (GMD). The sequences of water-stable aggregates in different sizes were as follows: On one hand, the sequence of purple soil aggregates was W2-5mm>W0.25-0.5mm>W0.5-1mm>W0-0.053mm>W0.053-0.25mm>W1-2mm>W>5mm. On the other hand, the sequence of the loess soil was W0-0.053mm>W0.053-0.5mm>W0.25-0.5mm>W0.5-1mm>W2-5mm>W1-2mm>W>5mm. Three LB treatments were carried out and the results were as follows: MWD and GMD of soil aggregates in the loess soil presented the trend of slow wetting (SW)>wetting stirring (WS)>fast wetting (FW), while those in the purple soil were WS>SW>FW. Under SW treatment, purple soil had higher erodibility factor (K) than loess soil, close to the result of Yoder's method. Yet under WS and FW treatments, K values of purple soil were much lower than that of loess soil (P |
---|---|
ISSN: | 0972-6268 2395-3454 |
DOI: | 10.46488/NEPT.2020.v19i04.029 |