Zobrazeno 1 - 10
of 15
pro vyhledávání: '"N. J. Jarvis"'
Publikováno v:
Hydrology and Earth System Sciences, Vol 16, Iss 7, Pp 2069-2083 (2012)
Estimating pesticide leaching risks at the regional scale requires the ability to completely parameterise a pesticide fate model using only survey data, such as soil and land-use maps. Such parameterisations usually rely on a set of lookup tables and
Externí odkaz:
https://doaj.org/article/211097a57e2b4a429ab31b22e0f10afa
Publikováno v:
Hydrology and Earth System Sciences, Vol 16, Iss 6, Pp 1647-1665 (2012)
Preferential flow is a widespread phenomenon that is known to strongly affect solute transport in soil, but our understanding and knowledge is still poor of the site factors and soil properties that promote it. To investigate these relationships, we
Externí odkaz:
https://doaj.org/article/492913a77bda40ac8c6de1765a3a0969
Autor:
N. J. Jarvis
Publikováno v:
Hydrology and Earth System Sciences, Vol 15, Iss 11, Pp 3431-3446 (2011)
Many land surface schemes and simulation models of plant growth designed for practical use employ simple empirical sub-models of root water uptake that cannot adequately reflect the critical role water uptake from sparsely rooted deep subsoil plays i
Externí odkaz:
https://doaj.org/article/12227684deee48e9a669dd06781ca57b
Publikováno v:
Vadose Zone Journal, Vol 10, Iss 4, Pp 1261-1275 (2011)
A better understanding of the relationships among preferential solute transport, hydrologic boundary conditions, and site properties will help to improve predictions of the fate of contaminants in the vadose zone. The diversity of mechanisms underlyi
Externí odkaz:
https://doaj.org/article/451a9b72c56f408cbb9d7abadfeb9f1e
Publikováno v:
Hydrology and Earth System Sciences, Vol 1, Iss 4, Pp 835-844 (1997)
In this paper, the dual-porosity MACRO model has been used to investigate methods of reducing leaching of isoproturon from a structured heavy clay soil. The MACRO model was applied to a pesticide leaching data-set generated from a plot scale experime
Externí odkaz:
https://doaj.org/article/12f4e103b65947ea8f80921b2dac0feb
Autor:
N. J. Jarvis
Publikováno v:
European Journal of Soil Science. 58:523-546
This review discusses the causes and consequences of 'non-equilibrium' water flow and solute transport in large structural pores or macropores (root and earthworm channels, fissures and interaggregate voids). The experimental evidence suggests that p
Publikováno v:
African Crop Science Journal; Vol 6, No 1 (1998)
(African Crop Science Journal, 1998 6(1): 29-38)
Publikováno v:
Soil Science Society of America Journal. 61:559
One of the most important features that is neglected in many soil erosion studies in Africa is the monitoring of changes to the soil during the progress of the experiment. Objectives of this study were therefore to monitor runoff, soil loss, and enri
Autor:
P. B. Leeds‐Harrison, N. J. Jarvis
Publikováno v:
Journal of Soil Science. 38:499-509
SUMMARY A two-domain model of water movement, storage and drainage in a cracked clay soil has been applied and tested in the field by irrigating an instrumented lysimeter constructed around a 2.0 m length of mole drain. Measurements of drain outflow