Li Yanrui, Ji Liangpeng, Bai Xiaoshuan
College of Life Science and Technology, Inner Mongolia Normal University, Hohhot, 010022, China.
Sci Rep. 2025 Jul 1;15(1):22307. doi: 10.1038/s41598-025-07830-9.
Insect communities serve as vital components of ecosystems and environmental indicators. To assess insect community composition and diversity across Inner Mongolia's grassland types, a systematic survey was conducted between June and August of 2022-2023 using the sweep net method. A total of 38,200 insects were identified, belonging to 4 orders, 69 families, and 518 species. Herbivorous insects dominated the communities, accounting for 98.66% of the total individual count. Dominant species composition varied among grassland types. Significant differences in alpha diversity were observed across habitats. PCoA spatially delineated distinct community structures. Meadow and typical steppes exhibited similar insect communities, while desert and steppe desert also clustered closely. This reflected the influence of environmental gradients on insect distribution. LEfSe analysis identified specific taxa driving these macro-scale differentiations. This differentiation underscores the necessity of tailored insect management strategies. These findings establish theoretical foundations for insect diversity monitoring and contribute to the sustainable use of grassland resources.
昆虫群落是生态系统的重要组成部分和环境指标。为评估内蒙古不同草原类型的昆虫群落组成和多样性，于2022年6月至8月至2023年8月期间采用扫网法进行了系统调查。共鉴定出38200只昆虫，隶属于4目、69科、518种。食草昆虫在群落中占主导地位，占个体总数的98.66%。优势物种组成因草原类型而异。不同栖息地的α多样性存在显著差异。主坐标分析在空间上描绘了不同的群落结构。草甸草原和典型草原表现出相似的昆虫群落，而荒漠草原和草原荒漠也紧密聚类。这反映了环境梯度对昆虫分布的影响。线性判别分析效应大小（LEfSe）分析确定了驱动这些宏观尺度差异的特定分类群。这种差异强调了制定针对性昆虫管理策略的必要性。这些发现为昆虫多样性监测奠定了理论基础，并有助于草原资源的可持续利用。
