Effects of farmland landscape pattern on oilseed rape pollinators and natural enemy-mediated pest biocontrol in rice fields

Landscape patterns in farmlands shape insect communities within agro-ecosystems and thereby affect ecosystem services such as pollination and pest control.This study reviewed the decade-long research work related to agricultural landscape ecology and its ecosystem services in Jiangxi Province，focusing on the regulatory mechanisms of farmland landscape patterns on pollinator diversity-pollination service coupling in oil seed rape，as well as landscape-pest-natural enemy interactions in rice agroecosystems.Focusing on landscape structural change under high-standard farmland consolidation，previous studies innovatively developed an integrated framework comprising pollinator survey，diversity assessment，pollination service quantification，and landscape regulation analysis.This framework reveals how landscape patterns and field management practices synergistically regulate pollinator communities and its pollination services.As for biological pest control，previous studies established a methodological system for rice arthropod community survey，natural enemy diversity，ecological function evaluation，and landscape response analysis.The research findings demonstrate that landscape complexity enhances natural enemy habitat quality，thereby regulating pest population dynamics and strengthening biological control functions through landscape ecological pathways.The research not only provides landscape ecological evidence for regional pest management，but also offers theoretical frameworks and practical paradigms for conserving beneficial insects and enhancing ecosystem services.These insights contribute significantly to promoting synergistic improvements in farmland ecosystem services at regional scales.