Arid
DOI10.1016/j.agee.2011.07.021
Evaluation of RothC model using four Long Term Fertilizer Experiments in black soils, India
Bhattacharyya, T.; Pal, D. K.; Deshmukh, A. S.; Deshmukh, R. R.; Ray, S. K.; Chandran, P.; Mandal, C.; Telpande, B.; Nimje, A. M.; Tiwary, P.
通讯作者Bhattacharyya, T.
来源期刊AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN0167-8809
出版年2011
卷号144期号:1页码:222-234
英文摘要

Carbon content in soils changes depending on the land use system, type of management practice and time. There is an increasing concern about the soil quality vis-a-vis organic carbon content in soils due to global warming and enhanced CO(2) concentration in the atmosphere. This has led to estimate carbon stock in soils at global and regional levels. The objective of the present study was to evaluate RothC model to estimate total organic carbon (TOC) changes under four long term fertilizer experimental sites representing sub-humid moist (Sarol and Nabibagh), sub-humid dry (Panjri) and semi-arid (Teligi) climate in India. The plant carbon input rate was calibrated using organic carbon and other soil parameters using RothC. The results showed that RothC could simulate changes in TOC in two contrasting eco-sites for surface soil layers. The root mean square error (RMSE) considered as modelling error ranged from 11.50 to 15.01, 4.70 to 11.60, 2.14 to 6.52 and 1.45 to 13.74 in the surface layers of Sarol, Nabibagh, Panjri, and Teligi sites, respectively. The simulation biases expressed by M (relative error) by Student’t’ value for all the treatments at these sites were non-significant with two exceptions. Observed trends in TOC consist of an increase for all the four treatments in the sub-humid site of Sarol and Nabibagh; while manures alone or in combination increase TOC appreciably in Teligi and Panjri. TOC remained, however, almost similar over years for the control (no fertilizer or manure) and NPK treatments in all the four sites. Analysis of RothC output data showed that this model could be used as a tool to arrive at different threshold values of rainfall to influence decomposition rate modifier and thus to find out rate of organic carbon sequestration in various bioclimatic systems. (C) 2011 Elsevier B.V. All rights reserved.


英文关键词RothC Oxidisable carbon content (Walkley and Black C) Long Term Fertilizer Experiment Soils India
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000298898200024
WOS关键词ORGANIC-CARBON ; REGIONAL-SCALE ; ANNUAL INPUT ; MATTER ; SEQUESTRATION ; RADIOCARBON ; TROPICS ; WORLD
WOS类目Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向Agriculture ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/166946
作者单位ICAR, NBSS & LUP, Div Soil Resource Studies, Nagpur 440010, Maharashtra, India
推荐引用方式
GB/T 7714
Bhattacharyya, T.,Pal, D. K.,Deshmukh, A. S.,et al. Evaluation of RothC model using four Long Term Fertilizer Experiments in black soils, India[J],2011,144(1):222-234.
APA Bhattacharyya, T..,Pal, D. K..,Deshmukh, A. S..,Deshmukh, R. R..,Ray, S. K..,...&Tiwary, P..(2011).Evaluation of RothC model using four Long Term Fertilizer Experiments in black soils, India.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,144(1),222-234.
MLA Bhattacharyya, T.,et al."Evaluation of RothC model using four Long Term Fertilizer Experiments in black soils, India".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 144.1(2011):222-234.
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