Abstract: 【Aim】To elucidate the effects of landscape pattern on the community diversity of insect pollinators in jujube orchard in southern Xinjiang, northwestern China.【Methods】A total of 29 sites were selected in Aksu, Xinjiang in 2019 and 2020, the diversity data of insect pollinators in focal jujube orchards were obtained by pan traps, and land use information within a radius of 2 000 m around focal jujube orchards was investigated. We built the linear mixed models with landscape variables and insect pollinator community index to elucidate the effect of landscape variables on insect pollinator community index in jujube orchard using multi-model inference technology based on Akaikes’ information criterion. 【Results】The proportion of other orchards (apple, walnut, pear, etc.) and semi-nature habitats (hedgerow, fallow, etc.) surrounding jujube orchards in southern Xinjiang in 2019 and 2020 were significantly negatively correlated with the abundance of insect pollinators in jujube orchards, across four scales (500, 1 000, 1 500 and 2 000 m). At the scales of 500 and 1 000 m, there was a positive correlation between the proportion of secondary crops (wheat etc.) and the species richness of insect pollinators in jujube orchards. The species richness of insect pollinators increased with edge density within the 1 000 m buffer. Landscape variables had no significant effect on the community diversity of insect pollinators in jujube orchards. 【Conclusion】 In southern Xinjiang, the abundance of insect pollinators in the jujube orchard is mainly affected by the dilution effect of the proportion of other fruit trees and semi-nature habitats, while the proportion of secondary crops can promote the increase of pollinator species richness. It is confirmed that the farmland landscape pattern can significantly affect the population of insect pollinators in Desert Oasis Agro-ecosystem in Xinjiang, which provides a scientific basis for the conservation of insect pollinators and the improvement of their pollination service function in southern Xinjiang.

Key words: Landscape pattern, insect pollinators, community diversity, habitat type, pollination service function