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Modelling soil and root respiration in a cotton field using the DNDC model

Author:
Yu, Yongxiang, Zhao, Chengyi
Source:
Zeitschrift für Pflanzenernährung und Bodenkunde 2015 v.178 no.5 pp. 787-791
ISSN:
1436-8730
Subject:
cotton, greenhouse gas emissions, irrigation, models, soil, soil organic carbon, soil respiration, temperature, temporal variation
Abstract:
The DNDC model was able to simulate the temporal variation in soil respiration, although it underestimated the cumulative CO₂ emission by 15%. A good correlation was found between predicted and measured root respiration. However, this model is limited in its ability to simulate heterotrophic respiration which was underestimated by 59%. The sensitivity tests showed that temperature, precipitation, soil organic C content, fertilization, and irrigation had a positive effect on soil respiration.
Agid:
4223767