黄河下游沿岸农业景观中蜘蛛对非农生境的响应（英文）

编号 zgly0001675801

文献类型 期刊论文

文献题名 黄河下游沿岸农业景观中蜘蛛对非农生境的响应（英文）

作者 侯笑云  丁圣彦  赵爽  刘晓波 

作者单位 KeyLaboratoryofGeospatialTechnologyfortheMiddleandLowerYellowRiverRegions  MinistryofEducation  CollegeofEnvironmentandPlanning  HenanUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2019年07期

年份 2019 

分类号 S185 

关键词 less-focusednon-crophabitats  spider  landscapescale  ecosystemservices 

文摘内容 Non-crop habitats have been suggested to impact local biodiversity significantly in agricultural landscapes. However, there have been few studies of the effects of less-focused non-crop habitats(orchard, wetland, pit and ditch) on variation of spider abundance. In this study, spiders in 30 woodlands were captured using pitfall traps in Fengqiu County, China, and the effects of local and landscape variations at different scales(50 m, 100 m, 200 m, 350 m and 500 m) on spider abundance were analysed. The most important variation that influenced spider abundance at the 500 m scale was the less-focused non-crop habitat(LNH) cover, and 10% was an appropriate proportion of LNH cover to sustain high level of spider diversity in the investigated landscape. Non-metric multidimensional scaling analyses revealed that there were significant differences in the spider composition among the high, medium and low LNH coverage. Based on indicator species analysis, different spider species were associated with landscapes with different levels of LNH cover. Lycosidae, which accounted for 48% of the total specimens, preferred woodland habitats neighbouring areas with high LNH cover. Compared with woodland habitats, LNH provided more diverse food sources and habitat to sustain more spider species in the study area. Furthermore, linear elements composed of vegetation, such as pits and ditches, may prevent agricultural intensification by enhancing landscape connectivity and providing habitats for different spiders. Our findings may provide a theoretical basis for biodiversity conservation in agro-ecosystems and top-down control of pests.