• 关键词：土地整治  土壤微生物  有机肥  土壤质量

• 基金项目：国家社会科学基金重大项目（No.14ZDA039）；山东黄河三角洲土地利用和生态工程技术研究中心项目；山东省盐碱地综合开发示范项目

• 林耀奔
• 1. 浙江大学土地与国家发展研究院, 杭州 310058;2. 山东省土地生态修复工程技术研究中心, 滨州 256600

• 叶艳妹
• 1. 浙江大学土地与国家发展研究院, 杭州 310058;2. 山东省土地生态修复工程技术研究中心, 滨州 256600

• 杨建辉
• 浙江财经大学中国政府管制研究院, 杭州 310018

• 胡一鸣
• 1. 浙江大学土地与国家发展研究院, 杭州 310058;2. 山东省土地生态修复工程技术研究中心, 滨州 256600

• 施昊坤
• 1. 浙江大学土地与国家发展研究院, 杭州 310058;2. 山东省土地生态修复工程技术研究中心, 滨州 256600

• 摘要：为了研究土地整治对土壤微生物的影响，通过田野调查和样品实验，对土地整治区内外土壤中的微生物多样性与种群结构进行了对比分析.结果表明：从微生物多样性来看，土地整治区内土壤细菌和真菌多样性显著提高；从微生物种群结构来看，土地整治区内细菌丰度较高的属有变形菌、绿弯菌、酸杆菌和放线菌，真菌丰度较高的属有被孢霉菌、青霉菌和曲霉菌；有机肥的使用显著提高了微生物多样性及鞘脂单胞菌和地杆菌等土壤有益菌的丰度；通过相关性分析可得，土壤理化性质和重金属污染水平是影响土壤微生物多样性与结构的重要因素.该研究证实了土地整治对提高土壤微生物多样性和改善土壤质量的重要作用，也为土地整治工作的开展提供了科学依据.

• Abstract：In order to study the effects of land consolidation on soil microbes, comparative analysis of soil microbial diversity and community structure inside or outside the land consolidation area were carried out through field investigation and sample experiments. The results show that:①From the perspective of microbial diversity, the richness of soil bacterial and fungal diversity in the land consolidation area was significantly improved. ②In terms of microbial structure, the bacteria with relatively high abundance in the land consolidation area were Proteobacteria, Chloroflexi, Acidobacteria, Actinomycetes and the fungi were Mortierella, Penicillium and Aspergillus. ③ The application of organic fertilizer significantly improved the microbial diversity and the abundance of soil beneficial bacteria such as Sphingomonas and Bacillus. ④ Through correlation analysis, soil physical and chemical properties as well as heavy metal pollution had a major impact on soil microbial diversity and structure. This study confirms the important role of land consolidation in enhancing soil microbial diversity and soil quality, and also serves as a scientific basis for the development of land consolidation.

• Key words：land consolidation  soil microbe  organic fertilizer  soil quality

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