Determining the hydraulic properties of a Sahelian crusted soil. 1. In field experiment and measurements.

被引：5
|
作者：
Perez, P [1 ]
Todoroff, P [1 ]
Touma, J [1 ]
Fortier, M [1 ]
机构：
[1] Cirad CA, F-34032 Montpellier 1, France
来源：
AGRONOMIE | 1999年 / 19卷 / 05期
关键词：
crusted soil; rain simulator; tension disk infiltrometer; mercury intrusion; hydraulic resistance;
D O I：
10.1051/agro:19990501
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Surface sealing affects considerably the infiltration capacity of soils in the Sahelian zone. Due to experimental constraints, in situ determination of the hydraulic resistance of soil crusts is seldom attempted. A methodology is presented that allowed the determination of the hydrodynamic characteristics of a ferrugineous soil located in Senegal and their evolution under two successive simulated rains. Values inferred from tensiometric and capacitive measurements are, to some extent, in agreement with those determined by tension disk infiltrometer at the end of the experiment; however, only the former method permits the assessment of the crust resistance. The structural modification of the soil surface is confirmed by mercury intrusion on undisturbed soil samples. ((C) Inra/Elsevier, Paris.)
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页码：331 / 340
页数：10
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