Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agee.2007.01.011 |
Evaluation of two soil carbon models using two Kenyan long term experimental datasets | |
Kamoni, P. T.; Gicheru, P. T.; Wokabi, S. M.; Easter, M.; Milne, E.; Coleman, K.; Falloon, P.; Paustian, K.; Killian, K.; Kihanda, F. M. | |
通讯作者 | Kamoni, P. T. |
来源期刊 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
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ISSN | 0167-8809 |
EISSN | 1873-2305 |
出版年 | 2007 |
卷号 | 122期号:1页码:95-104 |
英文摘要 | RothC and Century are two of the most widely used soil organic matter (SOM) models. However there are few examples of specific parameterisation of these models for environmental conditions in East Africa. The aim of this study was therefore, to evaluate the ability of RothC and the Century to estimate changes in soil organic carbon (SOC) resulting from varying land use/management practices for the climate and soil conditions found in Kenya. The study used climate, soils and crop data from a long term experiment (1976-2001) carried out at The Kabete site at The Kenya National Agricultural Research Laboratories (NARL, located in a semi-humid region) and data from a 13 year experiment carried out in Machang’a (Embu District, located in a semi-arid region). The NARL experiment included various fertiliser (0, 60 and 120 kg of N and P2O5 ha(-1)), farmyard manure (FYM - 5 and 10 t ha(-1)) and plant residue treatments, in a variety of combinations. The Machang’a experiment involved a fertiliser (51 kg N ha(-1)) and a FYM (0, 5 and 10 t ha(-1)) treatment with both monocropping and intercropping. At Kabete both models showed a fair to good fit to measured data, although Century simulations for treatments with high levels of FYM were better than those without. At the Machang’a site with monocrops, both models showed a fair to good fit to measured data for all treatments. However, the fit of both models (especially RothC) to measured data for intercropping treatments at Machang’a was much poorer. Further model development for intercrop systems is recommended. Both models can be useful tools in soil C Predictions, provided time series of measured soil C and crop production data are available for validating model performance against local or regional agricultural crops. (C) 2007 Elsevier B.V. All rights reserved. |
英文关键词 | model evaluation RothC century Kenya soil organic carbon land management |
类型 | Article |
语种 | 英语 |
国家 | Kenya ; USA ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000246320300010 |
WOS关键词 | ORGANIC-MATTER ; FERTILIZER ; DYNAMICS |
WOS类目 | Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences |
WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
来源机构 | Colorado State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/153371 |
作者单位 | (1)Natl Agr Res Labs, Nairobi, Kenya;(2)Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA;(3)Univ Reading, Dept Soil Sci, Reading RG6 6DW, Berks, England;(4)Rothamsted Res, Agr & Environm Div, Harpenden AL5 2JQ, Herts, England;(5)Hadley Ctr Climate Predict & Res, Met Off, Exeter EX1 3PB, Devon, England;(6)Kenya Agr Res Inst, Embu, Kenya |
推荐引用方式 GB/T 7714 | Kamoni, P. T.,Gicheru, P. T.,Wokabi, S. M.,et al. Evaluation of two soil carbon models using two Kenyan long term experimental datasets[J]. Colorado State University,2007,122(1):95-104. |
APA | Kamoni, P. T..,Gicheru, P. T..,Wokabi, S. M..,Easter, M..,Milne, E..,...&Kihanda, F. M..(2007).Evaluation of two soil carbon models using two Kenyan long term experimental datasets.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,122(1),95-104. |
MLA | Kamoni, P. T.,et al."Evaluation of two soil carbon models using two Kenyan long term experimental datasets".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 122.1(2007):95-104. |
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