Simulation of soil nitrogen, nitrous oxide emissions and mitigation scenarios at 3 European cropland sites using the ECOSSE model
Simulation of soil nitrogen, nitrous oxide emissions and mitigation scenarios at 3 European cropland sites using the ECOSSE model
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DOI：
10.1007/s10705-011-9479-4
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发表时间：
2012-03-01
影响因子：
3.1
通讯作者：
Sommer, M.
中科院分区：
文献类型：
--
作者：
Bell, M. J.;Jones, E.;Sommer, M.
一氧化二氮（N2O）的全球变暖潜力及其在大气中的长寿命意味着其在大气中的存在是一个主要问题，需要采取措施来测量和减少排放。然而，巨大的空间和时间变化意味着，简单地外推测量数据是不合适的，需要其他量化方法。虽然为模拟这些排放量开发了基于过程的模型，但这些模型往往需要大量的输入数据，而这些数据在区域范围内是不具备的，因此难以对区域和全球排放量进行估计。有机土壤的空间范围意味着还需要对这些土壤类型的排放量进行量化，但使用尚未开发的基于过程的模型来模拟土壤含水量高于田间容量或有机土壤是无法实现的。ECOSSE模型的开发就是为了克服这些局限性，它只需要在区域尺度上容易获得的输入数据，因此可以用来量化区域排放量，并直接为土地利用变化决策提供信息。ECOSSE包括氮（N）周转的主要过程，与物质之间的交换池的SOM在修改率的温度，土壤水分，土壤pH值和作物覆盖。在网站规模的性能评估，以证明其能够充分模拟土壤氮含量和N2O排放量从农田土壤在欧洲。减缓情景和敏感性分析也展示了如何ECOSSE可以用来估计未来的气候和土地利用变化对N2O排放的影响。
The global warming potential of nitrous oxide (N2O) and its long atmospheric lifetime mean its presence in the atmosphere is of major concern, and that methods are required to measure and reduce emissions. Large spatial and temporal variations means, however, that simple extrapolation of measured data is inappropriate, and that other methods of quantification are required. Although process-based models have been developed to simulate these emissions, they often require a large amount of input data that is not available at a regional scale, making regional and global emission estimates difficult to achieve. The spatial extent of organic soils means that quantification of emissions from these soil types is also required, but will not be achievable using a process-based model that has not been developed to simulate soil water contents above field capacity or organic soils. The ECOSSE model was developed to overcome these limitations, and with a requirement for only input data that is readily available at a regional scale, it can be used to quantify regional emissions and directly inform land-use change decisions. ECOSSE includes the major processes of nitrogen (N) turnover, with material being exchanged between pools of SOM at rates modified by temperature, soil moisture, soil pH and crop cover. Evaluation of its performance at site-scale is presented to demonstrate its ability to adequately simulate soil N contents and N2O emissions from cropland soils in Europe. Mitigation scenarios and sensitivity analyses are also presented to demonstrate how ECOSSE can be used to estimate the impact of future climate and land-use change on N2O emissions.