College of Life Science , Northeast Agricultural University , Harbin , Heilongjiang 150030 , People's Republic of China.
College of Life Science , Heilongjiang University , Harbin , Heilongjiang 150030 , People's Republic of China.
J Agric Food Chem. 2019 May 29;67(21):5940-5948. doi: 10.1021/acs.jafc.9b01073. Epub 2019 May 16.
In this study, hetero-two-dimensional correlation spectroscopy (hetero-2DCOS) combined with parallel factor analysis (PARAFAC) was employed to reveal the inner changes in the dissolved organic matter (DOM) components derived from soil amended with seven different composts. The dynamics of the four DOM components showed that the fluorescence peaks in each component varied in different directions during mineralization. Structural equation models (SEMs) demonstrated that the compost amendments changed the correlations of the total organic carbon (TOC), total nitrogen (TN), and bacterial community composition with DOM components and strengthened the cooperative function related to transformation of DOM components. The compost sources were further ranked as cabbage waste (CW) > chicken manure (CM), dairy cattle manure (DCM), tomato stem waste (TSW), peat (P) > municipal solid waste (MSW), sewage sludge (SS) by projection pursuit regression (PPR) analysis. It is helpful to improve the bioavailability of compost products to obtain composts with a particular function.
在这项研究中，采用异二维相关光谱（hetero-2DCOS）结合平行因子分析（PARAFAC）揭示了用七种不同堆肥处理的土壤中溶解有机物质（DOM）成分的内在变化。四种 DOM 成分的动力学表明，在矿化过程中，每个成分中的荧光峰以不同的方向变化。结构方程模型（SEMs）表明，堆肥添加剂改变了总有机碳（TOC）、总氮（TN）和细菌群落组成与 DOM 成分的相关性，并加强了与 DOM 成分转化相关的协同功能。通过投影寻踪回归（PPR）分析，进一步将堆肥来源排序为：白菜废物（CW）>鸡粪（CM）、奶牛粪便（DCM）、番茄茎废物（TSW）、泥炭（P）>城市固体废物（MSW）、污水污泥（SS）。有助于提高堆肥产品的生物利用度，获得具有特定功能的堆肥。
