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Microorganisms mediate the decomposition of straw residue in soil, but how soil fertility levels affect microbial incorporation of straw C remains unclear in many ecosystems. The objectives of this study were to quantify the contribution of straw C to microbial organic C (MBC), and to evaluate the effect of different soil fertility levels on the(More)
Long-term use of artificial fertiliser has a significant impact on soil organic carbon (SOC). We used physical-chemical fractionation methods to assess the impact of long-term (26years) fertilisation in a maize cropping system developed on Brown Earth in Northeast China. Plot treatments consisted of control (CK); nitrogen (N) fertiliser (N2); low-level(More)
Soil type and fertility level influence straw carbon dynamics in the agroecosystems. However, there is a limited understanding of the dynamic processes of straw-derived and soil-derived carbon and the influence of the addition of straw carbon on soil-derived organic carbon in different soils associated with different fertility levels. In this study, we(More)
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