Soil organic matter quality of variously managed agricultural soil in the Czech Republic evaluated using DRIFT spectroscopy

IF 1.7 4区 农林科学 Q4 SOIL SCIENCE
Lenka Pavlů, Jiří Balík, Simona Procházková, Petra Vokurková, Ivana Galušková, Ondřej Sedlář
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引用次数: 0

Abstract

This study focuses on the effect of agricultural soil management on soil organic matter (SOM) composition. The addition of manure and crop residues was tested under different pedoclimatic conditions. The quality of SOM was assessed using diffuse reflectance infrared spectroscopy. The following parameters were calculated from the spectra:  sum of aliphatic bands (ΣAL), aromatic bands at wave numbers 1 620 and 1 520 cm–1 (AR1620 and AR1520), potential wettability (PWI), organic matter quality (OMQ), and decomposability (DI) indexes. The addition of manure or crop residues may not cause fundamental changes in the qualitative composition of SOM. Rather, pedoclimatic conditions determine which components are fixed in the soil on a long-term scale. A dominant effect of soil type was found in the distribution of all spectral parameters studied using main effect ANOVA. The main differences between the soil types concern the aromatic, oxygen and nitrogen groups contained in the SOM. Chernozems are soils with higher OMQ and DI, whereas Cambisols are soils with low OMQ and DI and the highest PWI. The stabilisation of SOM in soils can thus be based on the biochemical persistence of organic molecules, their specific affinity for minerals and the formation of aggregates that protect enclosed SOM.
捷克共和国不同管理的农业土壤的土壤有机质质量使用漂移光谱进行评估
本研究的重点是onÂ对ofÂ农业土壤管理onÂ土壤有机质(SOM)组成的影响。在不同的气候条件下,对添加ofÂ粪肥和作物残茬进行了试验。采用漫反射红外光谱法评价of SOM的质量。根据光谱计算出以下参数: Â和ofÂ脂肪带(ΣAL)、芳香带atÂ波数1620和1 520 cm-1 (AR1620Â和AR1520)、潜在润湿性(PWI)、有机质质量(OMQ)和可分解性(DI)指标。添加ofÂ粪肥orÂ作物残渣可能不会引起根本变化inÂ定性组成of SOM。相反,土壤条件决定了哪些成分是固定的inÂ土壤on aÂ长期尺度。AÂ优势效应ofÂ土壤类型inÂ分布ofÂ各光谱参数采用主效应方差分析研究。土壤类型之间的主要差异在于土壤有机质中所含的芳香、氧和氮基团inÂ。黑钙土是高OMQ and DI的土壤,而cambisol是低OMQ和DI的土壤,PWI最高。因此,稳定of SOM inÂ土壤可以beÂ基于onÂ生物化学持久性ofÂ有机分子,它们对矿物质的特定亲和力和形成ofÂ保护封闭SOM的聚集体。
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来源期刊
Soil and Water Research
Soil and Water Research Water resources, Soil Science, Agriculture-WATER RESOURCES
CiteScore
4.60
自引率
0.00%
发文量
26
审稿时长
>12 weeks
期刊介绍: An international peer-reviewed journal published under the auspices of the Czech Academy of Agricultural Sciences and financed by the Ministry of Agriculture of the Czech Republic. Published since 2006. Thematic: original papers, short communications and critical reviews from all fields of science and engineering related to soil and water and their interactions in natural and man-modified landscapes, with a particular focus on agricultural land use. The fields encompassed include, but are not limited to, the basic and applied soil science, soil hydrology, irrigation and drainage of lands, hydrology, management and revitalisation of small water streams and small water reservoirs, including fishponds, soil erosion research and control, drought and flood control, wetland restoration and protection, surface and ground water protection in therms of their quantity and quality.
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