基础土壤学研究的方法论思考:基于土壤化学的视角
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国家自然科学基金重点项目(41530855)资助


Rethink the Methodologies in Basic Soil Science Research: From the Perspective of Soil Chemistry
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Supported by the National Natural Science Foundation of China (No. 41530855)

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    摘要:

    长期以来,不少人片面地认为,土壤学在学科属性上仅是应用型的,在研究手段上仅是实验型的,在研究方法上必须是整体综合的。本文系统地分析了这些片面认识对土壤学发展的危害,提出土壤学发展应特别强调“分析”的方法,并在深入分析的基础上实现自然而系统的综合。阐述了土壤学研究的三个基本观点:一是充分认识土壤系统的特殊性根基在于其对物质亚原子结构的重大影响。与普通水溶液中的情况相比,土壤中的离子、原子和分子在本质上已发生了很大变化。所以,如果土壤确实从亚原子尺度上改变了物质的结构与性质,开展土壤学中独特的量子效应研究将是重要的。其次,充分考虑土壤系统的特殊性,在方法上应从宏观尺度、介观尺度、分子尺度至亚原子尺度对土壤进行逐级分解简化,并借助于量子力学原理和方法,最终,在亚原子尺度上彻底剖析土壤,以获得土壤学自己的科学基础。第三,以土壤中独特的量子效应为基础的研究,可构建“亚原子结构—土壤微观机制—宏观效应”三者间的直接关联,由此实现土壤中不同尺度间科学原理的自然转换,最终构建独立的土壤学知识体系。

    Abstract:

    For a long time, quite a number of people one-sidedly believe that soil science is merely an applied science, and its research tools are merely experimental, while its research methodology should be holistic and integrative. In this paper, systems analysis was done of the perniciousness of this one-sided presumption to development of the soil science, and it was proposed that development of the soil science in future should stress the use of analytical methods and a natural systematic integration should be realized on the basis of such in-depth analyses. Three basic viewpoints were then put forward and elaborated: 1) it is essential to be fully aware that the peculiarities of the soil systems root in their fundamental impacts on subatomic structures. For example, in common aqueous solutions, Li , K and Cs will definitely not exceed 1.00 in effective charge and instead should fall below 1.00 due to cationic volumes and hydration effects; however, their effective charges burgeon respectively to 1.05, 1.94 and 2.40 when these ions are placed at the interface of clays in aqueous solutions, as a result of the profound impact of clay on the energetic and quantum states of these cation electrons. In other words, cations (as well as atoms and molecules) at clay interfaces are essentially different from those in aqueous solutions. 2) Considering peculiarities of the soil systems, methodologically the soils should be hierarchized by scale i.e. macroscopic, mesoscopic, molecular, atomic and subatomic scales, and eventually analyzed by means of the principles and methodology of quantum mechanics at the subatomic scale. And 3) Through researches based on the quantum effect unique to the soil, direct correlations between subatomic structures, soil microscopic mechanisms and macroeffect could be established, hence to realize, an natural conversion of scientific principles between different scales of soil. And in the end an independent and self-consistent pedological knowledge system will be constituted. Here it is a must to emphasize that this paper is intended to provide some ideas about methodology of the research on basic soil science. Although it may be too much of a generalization for our arguments to be just supported by several special examples, the particularities of the soil systems those samples reflect sufficiently express the necessity to establish an independent and self-consistent knowledge system for soil science, and the importance of analytical methods in the establishment.

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李 航,杨 刚.基础土壤学研究的方法论思考:基于土壤化学的视角[J].土壤学报,2017,54(4):819-826. DOI:10.11766/trxb201703310602 LI Hang, YANG Gang. Rethink the Methodologies in Basic Soil Science Research: From the Perspective of Soil Chemistry[J]. Acta Pedologica Sinica,2017,54(4):819-826.

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  • 收稿日期:2016-12-09
  • 最后修改日期:2017-05-02
  • 录用日期:2017-05-03
  • 在线发布日期: 2017-05-04
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