دورية أكاديمية
Lateral bromide distribution in a vertic clay soil
| العنوان: | Lateral bromide distribution in a vertic clay soil |
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| المؤلفون: | Yasuda, Hiroshi, Berndtsson, Ronny, Persson, Hans, Bahri, Akissa, Jinno, Kenji |
| المصدر: | Soil Science; 163(7), pp 544-555 (1998) ; ISSN: 0038-075X |
| بيانات النشر: | Lippincott Williams & Wilkins |
| سنة النشر: | 1998 |
| المجموعة: | Lund University Publications (LUP) |
| مصطلحات موضوعية: | Soil Science, Bromide distribution, Preferential flow, Solute transport |
| الوصف: | In order to control the transport of toxic elements, dissolved salts, and nutrients in agricultural areas, information on the spatial variability of field-scale transport properties is needed. To evaluate this for an unsaturated layered clayey soil, tracer tests were conducted at the Cherfech experimental field research station in Tunisia. Bromide-tagged water was infiltrated under ponding conditions on a 21.7-m2 horizontal field plot equipped with 60 solute samplers, 15 neutron probe access tubes, and 15 piezometers. Volumetric soil water content was measured by means of a neutron probe at five depths, and soil moisture samples were withdrawn through ceramic soil water samplers at four depths, each with 15 suction samplers. The results showed typical evidence of preferential flow, with a wide variety of travel times with depth. This was noted especially for deeper soil layers, which displayed a large horizontal variation. In two tracer experiments, the groundwater tracer concentration increased up to twice the concentration of the water in the unsaturated zone withdrawn from different depths. This shows that bypass directly to the groundwater, initially at 1.5 m depth, occurred under ponding with chemigation. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | https://lup.lub.lu.se/record/c04076fc-dde3-4335-8c53-ee0179905f91Test; http://dx.doi.org/10.1097/00010694-199807000-00004Test; scopus:0031867777 |
| DOI: | 10.1097/00010694-199807000-00004 |
| الإتاحة: | https://doi.org/10.1097/00010694-199807000-00004Test https://lup.lub.lu.se/record/c04076fc-dde3-4335-8c53-ee0179905f91Test |
| رقم الانضمام: | edsbas.733CA67B |
| قاعدة البيانات: | BASE |
| DOI: | 10.1097/00010694-199807000-00004 |
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