复垦村庄土壤肥力评价研究

发布时间：2019-04-19 23:35

【摘要】：土壤是实现农业可持续发展与陆地生态系统良性循环的物质基础,土壤肥力是土壤各种性质的综合表现,反映了土壤为植物提供适宜生长环境的能力。我国黄土高原产煤区煤炭开采导致大量的村庄需要搬迁整治,研究村庄复垦过程中土壤肥力的变化状况能够有效地判断复垦措施的科学性与合理性,对于复垦后耕地土壤肥力改良与质量提升提供一定的依据。为此,本文以山西省泽州县西郜村为研究区域,以土壤肥力相关理论为基础,对村庄复垦的土壤肥力改良效果进行了研究。本文的研究内容包括以下几个方面:(1)对国内外有关土壤肥力的研究进行综述性介绍与回顾,探讨不同研究内容与技术方法,明晰本文研究的起点;(2)在分析研究区概况的基础上并结合相关研究,构建了复垦村庄土壤肥力评价指标体系,并引入粗糙集理论来确定指标权重;(3)对影响土壤肥力改良效果的关键因素进行了分析与模拟调控;(4)为后续土壤肥力进一步改良提出了建议措施。通过对以上内容的研究,得出以下结论:(1)复垦过程对土壤肥力改良效果显著,复垦后土壤肥力状况趋于均匀且有了明显提升;(2)物理因子中的关键因素对土壤肥力改良效果的影响最为显著,符合研究对象的自身特点;(3)构建的土壤肥力效果评价指标体系具有一定的改进意义,能够较为客观地反映村庄在复垦过程中的土壤肥力的变化特征;(4)将粗糙集理论引入到土壤肥力评价指标权重确定的过程中,使得结果更加客观合理。本文的创新点是构建了复垦村庄土壤肥力评价指标体系,将粗糙集理论引入到评价过程中,对复垦村庄的土壤肥力状况进行了合理评价,能够为后续的相关研究提供一种有益的思路。
[Abstract]:Soil is the material basis for realizing sustainable development of agriculture and benign circulation of terrestrial ecosystem. Soil fertility is the comprehensive performance of various properties of soil, which reflects the ability of soil to provide suitable growth environment for plants. Coal mining in the coal-producing areas of the Loess Plateau in China results in a large number of villages that need to be relocated and renovated. The study of the changes of soil fertility in the process of reclamation in villages can effectively judge the scientific and rational measures of reclamation. It provides a certain basis for soil fertility improvement and quality improvement after reclamation. Therefore, based on the theory of soil fertility and the study area of Xigao Village, Zezhou County, Shanxi Province, the effect of soil fertility improvement of village reclamation was studied in this paper. The research contents of this paper include the following aspects: (1) introduce and review the research on soil fertility at home and abroad, discuss different research contents and technical methods, and clarify the starting point of this study; (2) on the basis of analyzing the general situation of the study area and combining with the related research, the evaluation index system of soil fertility in reclaimed villages was constructed, and rough set theory was introduced to determine the index weight; (3) the key factors affecting the effect of soil fertility improvement were analyzed and simulated. (4) suggestions for further improvement of soil fertility were put forward. Through the study of the above contents, the following conclusions are drawn: (1) the reclamation process has a remarkable effect on soil fertility improvement, and after reclamation, the soil fertility status tends to be uniform and has been significantly improved; (2) the key factors of physical factors have the most significant effect on soil fertility improvement, which accords with the characteristics of the research object; (3) the evaluation index system of soil fertility effect has a certain improvement significance, which can objectively reflect the change characteristics of soil fertility in the process of reclamation in villages; (4) the rough set theory is introduced into the process of determining the weight of soil fertility evaluation index, which makes the result more objective and reasonable. The innovation of this paper is to construct the evaluation index system of soil fertility in reclaimed villages. The rough set theory is introduced into the evaluation process, and the soil fertility status of reclaimed villages is evaluated reasonably. It can provide a useful train of thought for the follow-up related research.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S158

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