Participation in biodiversity schemes and environmental performance: overall farm-level impact and spillover effects on non-enrolled land
研究了瑞士农场参与农业环境计划的比例如何影响管理实践的生物多样性友好度，发现对未参与土地有正向但微小的溢出效应，整体影响也较小。
Abstract We evaluate how the share of farmland enrolled in agri-environmental schemes affects the biodiversity friendliness of management practices both on the overall farmland as well as on the enrolled and non-enrolled plots separately. To this end, we prepare a unique dataset for Switzerland that links farm-level accountancy data to plot-level data on management practices and their impact on organismal biodiversity. Our estimates allow us to calculate bounds for potential spillovers on non-enrolled farmland. We find that these are positive but small in magnitude. The effect on the overall farmland is also positive but again rather small.