基于文献计量的土壤微生物海拔分布规律研究

doi:10.19741/j.issn.1673-4831.2021.0039

摘要/Abstract

摘要： 土壤微生物是生态系统过程中必不可少的参与者，控制着陆地生物圈中最大有机质库的周转。近年来，有关土壤微生物的海拔空间分布研究越来越多。以"elevation gradient （海拔梯度） "和" soil microorganisms （土壤微生物）"为关键词，在Web of Science核心集合数据库与中国知网数据库（CNKI）搜索到相关文章共717篇，利用CiteSpace软件对搜索文献进行发文量分析、关键词共现和文献共被引聚类可视化分析。结果表明，自2000年以来，土壤微生物对海拔梯度的响应研究呈快速增长态势，且国内外研究趋势存在一致性。重点关键词主要包括"森林（forest）" "海拔（elevation）" "土壤真菌（soil fungi）""植被（plant） "等，这表明森林生态系统土壤微生物的空间分布是近年来重要的研究方向之一。土壤微生物群落相对丰度及多样性在区域空间尺度上表现出明显的海拔分布格局，即沿着海拔上升出现递增、递减、单峰、" U"型和无显著变化5种模式。此外，驱动土壤微生物群落变化的环境因子也存在差异，包括土壤养分、植被特异性和气候因素等。因此，未来应根据研究区域特征，在不同海拔空间尺度探讨土壤微生物群落和多样性的分布变化机制，揭示不同尺度下的土壤特征和微生物群落变异程度，进一步量化自身及相关环境因素之间的关系。

关键词: 海拔梯度, 土壤微生物, CiteSpace, 驱动因素

Abstract: Soil microbes are the essential participants in ecosystem processes, controlling the turnover of the largest organic matter pool in the terrestrial biosphere. In recent years, the variations of soil microbial diversity patterns and community structures with the elevation have been extensively studied. "Elevation gradient" and "Soil fertilization" were selected as the keywords, and a total of 717 papers were collected from the "Web of Science" core collection database and CNKI for number of posts analyses, keyword co-occurrence and literature co-citation cluster analyses by using Citespace visual literature. The results show that the research on the response of soil microorganisms to elevation gradients had been growing rapidly since 2000 and there was consistency in the domestic and international research trends. It was found that "forest", "elevation", "soil fungi" and "plant" were the frequency characteristics of keywords, which further indicates that the spatial variation of soil microorganisms was one of the important research directions in forest ecosystems. In addition, soil microbial diversity and community structures showed the following five clear altitudinal distribution patterns at the regional spatial scale:increasing, decreasing, "peak", "U" pattern and no significant changes. Moreover, the environmental driving factors of soil microbial communities were also controversial, including soil nutrients, vegetation specificity and climatic factors. Therefore, it is necessary to explore the distribution change mechanism of soil microbial community and diversity in the future according to the characteristics of the study region, so as to reveal the variation degree of soil characteristics and microbial community at different scales, and further quantify the relationship between soil microbial community and related environmental factors. It provides novel insights for the study of the basic distribution and dynamics of microorganisms in terrestrial ecosystems.

Key words: elevation gradient, soil microorganisms, CiteSpace, driving factors

中图分类号:

Q938.1

周煜杰, 贾夏, 赵永华, 王茜, 叶璇, 安毅仁. 基于文献计量的土壤微生物海拔分布规律研究[J]. 生态与农村环境学报, 2021, 37(10): 1281-1291.

ZHOU Yu-jie, JIA Xia, ZHAO Yong-hua, WANG Xi, YE Xuan, AN Yi-ren. Review on Soil Microbial Patterns along the Elevation Gradient Based on the Knowledge Mapping Analysis[J]. Journal of Ecology and Rural Environment, 2021, 37(10): 1281-1291.

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