Abstract：
Compared to open-field crops, the influence of the surrounding landscape on insect diversity in greenhouse crops has been poorly studied. Due to growing evidence of insect influx in greenhouses, identifying the landscape properties influencing the protected crop colonization by insect pests and their natural enemies would promote the improvement of both pest prevention and conservation biological control methods. Here, we present a field study on the effect of the surrounding landscape on the colonization of greenhouse crops by insect pests and associated natural enemies. By monitoring 32 greenhouse strawberry crops in the South West of France, we surveyed crop colonization by four insect pests and four natural enemy groups over two cultivation periods. Our results showed that the landscape structure and composition could have contrasting effects on insect colonization of greenhouse crops so there could be species-specific effects and not general ones. While the degree of openness of greenhouses and the pest management practices modulated insect diversity marginally, we also showed that seasonality represented a key factor in insect crop colonization. The various responses of insect pests and natural enemy groups to the landscape support the idea that pest management methods must involve the surrounding environment.
摘要：
与露地作物相比，周围景观对温室作物昆虫多样性的影响研究甚少。由于越来越多的证据表明昆虫涌入温室，确定影响害虫及其天敌对受保护作物定植的景观特性将促进害虫预防和保护生物防治方法的改进。这里,我们对周围景观对害虫和相关天敌对温室作物定殖的影响进行了实地研究。通过监测法国西南部32种温室草莓作物，我们调查了两个栽培期四种害虫和四种天敌群体的作物定殖情况。我们的结果表明，景观结构和组成可能对温室作物的昆虫定植产生相反的影响，因此可能存在特定物种的影响，而不是一般的影响。虽然温室的开放程度和害虫管理实践在一定程度上调节了昆虫的多样性，我们还表明，季节性是昆虫作物定殖的关键因素。害虫和天敌群体对景观的各种反应支持了害虫管理方法必须涉及周围环境的观点。
