数字农科院2.0

Enhancing agricultural biodiversity and pest control through strategic herbaceous strips: insights from a two-year field experiment

文献类型： 外文期刊

作者： Yan, Xue-Ying;Zhang, Xiao;Liu, Yu-Xin;Yang, Dian-Lin;Wang, Hui;Zhang, Yan-Jun

作者机构：

关键词： Biodiversity conservation;integrated pest management;ecological engineering;non-crop vegetation;sustainable agriculture

期刊名称： ENTOMOLOGIA GENERALIS

ISSN： 0171-8177

年卷期： 2026 年

页码：

收录情况： SCIE（2025版）

摘要： Agricultural intensification has driven catastrophic declines in non-crop habitats, eroding biodiversity and critical ecosystem services in agroecosystems. In this study, we evaluate the impact of herbaceous strips-established along field margins with a tailored mix of native plant species-on insect biodiversity, natural enemy activity, and maize yield. Over two years, we assessed both plant and insect communities in herbaceous strips of varying widths, as well as in adjacent maize fields. Our results reveal that herbaceous strips significantly increased insect diversity, particularly enhancing populations of parasitic wasps and Staphylinidae (key natural enemies), both within the strips and in adjacent maize fields. The herbaceous strip significantly improved diversity and pest control of the natural enemy community, and compared to 2 m and 6 m, the 4 m width had the best promotion effect. These strips notably suppressed herbivorous insects, including Lepidoptera pests, leading to a 14.5%+/- 2.3% increase in maize yield compared to control fields. We propose a thresholdbased implementation framework: allocating >= 10% of field area to 4 m-wide floristically diverse strips optimizes biodiversity-pest tradeoffs in fields >40 m width. Future research must address landscape-scale synergies between herbaceous strips and other agri-environment schemes to maximize metacommunity resilience under climate change.

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