Agglomeration bonus schemes have become important policy tools when the environmental benefit hinges on spatial coordination of conservation sites. We here analyse how spatial factors affect the uptake of an agglomeration payment scheme in a Swiss mountain region, which seeks to establish a network of conservation areas to conserve favourable conditions for biodiversity. We use a combination of spatially explicit farm census (44,279 parcels) and survey data in a spatially lagged explanatory variable model. In addition, we also consider the collaborative process in establishing the eligibility of parcels for receiving the bonus payment. We find that parcels that are more distant from the farm as well as those at steeper slopes are more likely to enter the scheme. This implies that conservation costs are an important driver of the farmers' decisions. The results remain robust when controlling for a wide range of parcel, farm and farmers' characteristics. The analysis also showed that the collaborative process increased the enrolment of parcels cultivated by larger farmers managing their land more intensively. We conclude that the collaborative process increased the weight given to biodiversity from connecting conservation sites in the planning process of the agglomeration bonus scheme.

当环境效益取决于保护区的空间协调性时，集聚奖励计划已成为重要的政策工具。我们在这里分析空间因素如何影响瑞士山区的集聚支付计划的采用，该计划旨在建立一个保护区网络以保存有利于生物多样性的条件。在空间滞后的解释变量模型中，我们结合使用了空间明确的农场普查（44,279个地块）和调查数据。此外，我们还考虑了在确定包裹接收奖金支付资格的过程中的协作过程。我们发现，距离农场更远的地方以及坡度更大的地方的包裹更有可能进入该计划。这意味着保护成本是农民增收的重要驱动力。决定。当控制各种地块，农场和农民的特征时，结果仍然很可靠。分析还表明，协作过程增加了由较大的农民对其土地进行更密集管理的耕地的登记。我们得出的结论是，在集聚奖金计划的规划过程中，协作过程增加了通过连接保护站点而赋予生物多样性的权重。