矽質玄武岩石粉控制土壤沖蝕功效之研究

The Effects of Tholeiite Powder on Controlling Soil Erosion

林俐玲(Li-Ling Lin)

《中華水土保持學報》 27卷2期 (1996/06) Pp. 167-174

https://doi.org/10.29417/JCSWC.199606_27(2).0008

摘要

本研究之主要目的爲探討矽質玄武岩石粉控制土壤沖蝕之功效。實驗分爲室內與田間兩大部分，室內實驗主要研究不同矽質玄武岩石粉添加量（0、5、10及15％）對土壤力學性質和土壤沖蝕之影響。田間實驗主要以矽質玄武岩石粉對土壤理化性質及土壤沖蝕爲研究重點。研究的結果如下：（1）土壤的塑性指數隨著石粉添加量的增加而降低；（2）矽質玄武岩石粉可提高土壤的剪力強度；（3）矽質玄武岩石粉的確可降低土壤的pH_0，增加土壤比表面積和表面電荷密度以提升土壤陽離子交換能量；（4）矽質玄武岩石粉可增加土壤的滲透能力，提高土壤的保水能力；（5）矽質玄武岩石粉可降低土壤的逕流量與沖蝕量。

關鍵字

矽質玄武岩石粉 ； 土壤沖蝕

並列摘要

The purpose of this study was to investigate the effects of tholeiite powder on controlling soil erosion. The experiments were conducted in the laboratory and the field respectively. The labortory experiment was to study effects of different amount of tholeiite powder (0, 5, 10 and 15%) application on soil mechanical properties and soil erosion. The field study was to test the ammending effects of tholeiite powder on soil properties and soil erosion. The results indicate that the plastic index of the soil will decrease with the increasing tholeiite powder in the sample; that tholeiite powder can increase the shear stress of the soil; that tholeiite powder can decrease pH_0, increase soil specific surface area and surface charge density thus increase soil cation exchange capacity; that tholeiite powder can increase the infiltrability and the water holding capacity of the soils. Under all kinds of experimental conditions, adding tholeiite powder into soil can abate both the runoff and soil erosion.

並列關鍵字

Tholeiite Powder ； Soil Erosion