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	Effect of temperature and precipitation on nitrate leaching from organic cereal cropping systems in Denmark
	Jabloun M.; Schelde, K.; Tao, F. L.; Olesen, J. E.
	2015
关键词	Nitrogen Leaching Organic farming Wheat Barley climate-change catch crops nitrogen mineralization winter-wheat arable crop european agriculture farming systems spring barley cover crops soil
英文摘要	The effect of variation in seasonal temperature and precipitation on soil water nitrate (NO3-N) concentration and leaching from winter and spring cereals cropping systems was investigated over three consecutive four-year crop rotation cycles from 1997 to 2008 in an organic farming crop rotation experiment in Denmark. Three experimental sites, varying in climate and soil type from coarse sand to sandy loam, were investigated. The experiment included experimental treatments with different rotations, manure rate and cover crop, and soil nitrate concentrations was monitored using suction cups. The effects of climate, soil and management were examined in a linear mixed model, and only parameters with significant effect (P < 0.05) were included in the final model. The model explained 61% and 47% of the variation in the square root transform of flow-weighted annual NO3-N concentration for winter and spring cereals, respectively, and 68% and 77% of the variation in the square root transform of annual NO3-N leaching for winter and spring cereals, respectively. Nitrate concentration and leaching were shown to be site specific and driven by climatic factors and crop management. There were significant effects on annual N concentration and NO3-N leaching of location, rotation, previous crop and crop cover during autumn and winter. The relative effects of temperature and precipitation differed between seasons and cropping systems. A sensitivity analysis revealed that the predicted N concentration and leaching increased with increases in temperature and precipitation. (C) 2014 Elsevier B.V. All rights reserved.
出处	European Journal of Agronomy
卷	62
页	55-64
语种	英语
ISSN号	1161-0301
DOI标识	10.1016/j.eja.2014.09.007
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/43537]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Jabloun M.,Schelde, K.,Tao, F. L.,et al. Effect of temperature and precipitation on nitrate leaching from organic cereal cropping systems in Denmark. 2015.

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