A - Papers appearing in refereed journals
Bhogal, A., Shepherd, M. A., Hatch, D. J., Brown, L. and Jarvis, S. C. 2001. Evaluation of two N cycle models for the prediction of N mineralization from grassland soils in the UK. Soil Use and Management. 17 (3), pp. 163-172.
|Authors||Bhogal, A., Shepherd, M. A., Hatch, D. J., Brown, L. and Jarvis, S. C.|
The ability of two nitrogen cycle models, of contrasting complexity, to predict N mineralization from a range of grassland soils in the UK, was evaluated. These were NCYCLE, a simple mass balance model of the N cycle in UK grasslands, and CENTURY, a more complex model simulating long-term C, N, P & S dynamics in grassland ecosystems. The models were tested using field measurements of net N mineralization from a range of grassland soils (differing in soil type, history & management practice), obtained over a 2 year period using a soil core incubation technique. This method was considered to measure the total net release of mineral N from the soil organic matter over a specified time, including N which may have been recycled several times. NCYCLE consistently under-estimated mineralization rates at all sites. By contrast, there was some correlation between CENTURY predictions of net N mineralization and field measurements. This may have reflected the different abilities of the two models to simulate N recycling. Neither model, however, was able to predict adequately the effect of cultivation and reseeding on net N mineralization.
|Year of Publication||2001|
|Journal||Soil Use and Management|
|Journal citation||17 (3), pp. 163-172|
|Digital Object Identifier (DOI)||doi:10.1079/SUM200171|
|Open access||Published as non-open access|
|Funder project or code||Delivering Sustainable Systems (SS) [ISPG]|
|Soil Science and Environmental Quality (SSEQ)|
|Project: 2430 4003|
|Project: 2430 5104|
|Project: NT 1902|
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