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生物地球化学模型是模拟研究化学元素动态的新兴领域,可用于陆地生态系统内植物、有机物和无机营养元素动态变化和循环。DNDC模型(DeNitrification-DeComposition Model)是美国新罕布什尔州大学陆地海洋空间研究中心开发研制的,最初是为了模拟农田生态系统固碳、氮流失和水平衡而创建,目前该模型可以模拟草地、湿地、林地等陆地生态系统碳氮动态过程。DNDC模型已经在美洲、欧洲、澳洲以及亚洲的一些地区得到了验证和运用。DNDC模型可用来分析陆地植物生长规律、土壤硝化和反硝化作用、温室气体和痕量气体排放预测研究、不同土壤类型及气候条件对森林生态系统碳氮通量变化的影响以及气候变化对生物地球化学循环的影响预测等。
Biogeochemical modeling is an emerging field that simulates the dynamics of chemical elements and can be used to dynamically change and circulate plant, organic and inorganic nutrient elements in terrestrial ecosystems. The DNDC model (DeNitrification-DeComposition Model) was developed by the University of New Hampshire’s Center for Terrestrial Space Studies and was first created to simulate carbon sequestration, nitrogen loss and water balance in agro-ecosystems. At present, the model can simulate grassland, wetland and woodland Such as terrestrial ecosystem carbon and nitrogen dynamic process. The DNDC model has been validated and deployed in the Americas, Europe, Australia and some parts of Asia. The DNDC model can be used to analyze the laws of the growth of terrestrial plants, the effects of soil nitrification and denitrification, the prediction of greenhouse gas and trace gas emissions, the effects of different soil types and climatic conditions on the changes of carbon and nitrogen fluxes in forest ecosystems, and the impacts of climate change on bio-earth Chemical cycle impact prediction.