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首页> 外文期刊>Soil Science Society of America Journal >Inconsistencies in Terminology and Definitions of Organic Soil Materials
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Inconsistencies in Terminology and Definitions of Organic Soil Materials

机译：术语和有机土壤材料的定义不一致

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In the last several decades, soil scientists have been conducting studies of organic soil materials to address critical environmental issues such as sequestration of the greenhouse gas CO2 and identification of hydric soils for wetland delineation. These studies form the knowledge base that the larger scientific community relies on to provide an understanding of identifying hydric soils for wetland identification and metrics of soil C quantity, variability, and fluxes for global C studies and models. Critical to this knowledge base is a set of criteria, terms, and definitions that can be consistently applied within and across scientific disciplines. In this study, we examined the degree of decomposition of 84 organic soil horizons and discuss these data relative to the criteria for the sapric, hemic, and fibric decomposition classes. Of the 84 horizons analyzed, 68 met the laboratory pyrophosphate color requirement, but only 28 met the laboratory fiber content criteria suggesting some disconnect between rubbed fiber content and pyrophosphate color requirements. A review of the literature suggests that the application of the terms sapric, hemic, and fibric vary among soil standards and that although pyrophosphate color is required for determining decomposition class for classification of Histosols and many hydric soil indicators, few pedologists or wetland scientists use these data. The results from our study and review of selected standards regarding the definitions, terminology, and criteria used for the application and classification of organic soil materials suggest that the soil science community needs to be more consistent in how soil organic materials are defined.
机译：在过去的几十年中，土壤科学家一直在进行有机土壤材料的研究，以解决关键的环境问题，例如隔离温室气体CO2和鉴定用于湿地划定的水合土壤。这些研究形成了更大的科学共同体赖以提供的知识基础，可为识别用于湿地识别的水合土壤以及全球C研究和模型的土壤C量，变异性和通量的度量提供理解。此知识库的关键是一组标准，术语和定义，这些标准，术语和定义可以在科学学科之内和之间始终如一地应用。在这项研究中，我们检查了84种有机土壤层的分解程度，并讨论了相对于sapic，hemic和fibre分解类别的标准的这些数据。在分析的84个层位中，有68个满足实验室焦磷酸盐颜色要求，但只有28个满足实验室纤维含量标准，表明摩擦纤维含量和焦磷酸盐颜色要求之间有些脱节。文献综述表明，在土壤标准中，sapric，hemic和fibric的使用有所不同，尽管焦磷酸盐的颜色对于确定组织溶胶的分类方法和许多含水土壤指示剂是必需的，但很少有土壤学家或湿地科学家使用这些颜色数据。我们对选定的有关有机土壤材料的应用和分类的定义，术语和标准的标准进行研究和审查的结果表明，土壤科学界需要在如何定义土壤有机材料方面更加一致。

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