ERODIBILITY OF 2 SOILS FROM KENYA

被引：18

作者：

BARBER, RG

MOORE, TR

THOMAS, DB

机构：

[1] UNIV NAIROBI,DEPT AGR ENGN,NAIROBI,KENYA

[2] MCGILL UNIV,DEPT GEOG,MONTREAL H3C 3G1,QUEBEC,CANADA

来源：

JOURNAL OF SOIL SCIENCE | 1979年 / 30卷 / 03期

关键词：

D O I：

10.1111/j.1365-2389.1979.tb01011.x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

A portable rainfall simulator was used to measure the runoff rates and soil losses from a freshly ploughed luvisol at Katumani, and a nitosol at Kabete, on a 6° slope at varying rainfall intensities. The soil losses from storms of 50 and 100 mm/h intensities, in which a total of SO mm rain was applied to plots in the wet moisture state, varied from 0.8 to 1.4 metric tons/ha at Kabete and 8.5 to 13.9 metric tons/ha at Katumani. The percentage runoff from these storms was 15 to 17 per cent at Kabete and 67 to 71 per cent at Katumani. The much greater runoff rates from the Katumani soils were shown to be due to surface capping caused by degradation of the surface structure. It has been proposed that soil credibility K factors of 0.4 and 0.04 could be used for the Katumani and Kabete soils respectively in the Universal Soil Loss Equation Copyright © 1979, Wiley Blackwell. All rights reserved

引用

页码：579 / &