气候变化下灰化黑钙土轮作有机碳动态评价

A. Polevoy, L. Bozko
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引用次数: 1

摘要

这项工作介绍了在气候条件变化的情况下,对土壤中的有机碳和十年轮作的СО2–C排放量的评估。使用RCP4.5和RCP8.5模型估计了2021–2050年的预期天气条件。该研究使用了土壤碳循环RothC-26.3的更新模型,该模型描述了土壤有机质的四个活跃和一个惰性区室的动力学。数值研究考虑了十田轮作的三种变体:1)不施肥种植作物;2) N45的矿物肥料施肥 P45 K45和N90P90K 90剂;3) 施用9和18吨/公顷的有机肥料。研究对象是气候变化条件下土壤中有机碳的平衡以及所有轮作田和单一轮作田的СО2–C排放。
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Assessment of organic carbon dynamics in podzolized chernozem soil in field crop rotation under the climate change
The work presents assessment of organic carbon in the soil and СО2 – C emissions for the ten-field crop rotation in a changing climate conditions. The expected weather conditions for the 2021–2050 are estimated with RCP4.5 and RCP8.5 models. The research uses the updated model for the soil carbon cycle RothC-26.3, which describes the dynamics of four active and one inert compartments of the soil organic matter. The numerical studies consider three variants of the ten-fields crops rotation: 1) growing crops without fertilizing; 2) fertilization with mineral fertilizers in N45 P45 K45 and N90P90K 90 doses; 3) fertilization with organic fertilizers in the amounts of 9 and 18 t/ha. The research object is the balance of organic carbon in the soil and СО2 – C emissions from all crop rotation fields and the singular crop rotation field in the climate change conditions.
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审稿时长
12 weeks
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