Carrot cropping on organic soil is a hotspot for nitrous oxide emissions
Carrot cropping on organic soil is a hotspot for nitrous oxide emissions
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DOI：
10.1007/s10705-012-9538-5
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发表时间：
2012-11
影响因子：
3.1
通讯作者：
P. Weslien;T. Rütting;Å. Kasimir-Klemedtsson;L. Klemedtsson
中科院分区：
文献类型：
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作者：
P. Weslien;T. Rütting;Å. Kasimir-Klemedtsson;L. Klemedtsson
温室气体一氧化二氮（N2O）的排放量进行了测量，从非氮施肥胡萝卜（胡萝卜ssp. sativa）在瑞典的有机土壤上在一个作物和收获后的季节。在149天的测量期内，累积排放量为41（±2.8）千克N2O ha−1。将测量期分为种植期和收获期后发现，胡萝卜的存在强烈刺激N2O排放，因为种植期的排放量比收获期高一个数量级。胡萝卜田的N2O排放量高于谷类作物和牧草生产的通量，但与有机土壤上蔬菜种植的通量相同。总之，我们的研究结果表明，根菜类蔬菜，如胡萝卜，有机土壤上的种植可以是一个高点源的N2O排放。
The emissions of the greenhouse gas nitrous oxide (N2O) were measured from a non nitrogen fertilized carrot (Daucus carota ssp. sativa) field on an organic soil in Sweden during one cropping and post-harvest season. The cumulative emission during the measuring period of 149 days was 41 (±2.8) kg N2O ha−1. Dividing the measuring period into a cropping and a post-harvest period revealed that the presence of carrots strongly stimulated N2O emissions, as the emission during the cropping period was one order of magnitude higher compared to the post-harvest period. The N2O emission from the carrot field were higher than fluxes reported from cereal crop and grass production, but in the same order as reported fluxes from vegetable cropping on organic soils. In conclusion, our results indicate that the cultivation of root vegetable, such as carrots, on organic soil can be a high point source for N2O emissions.