This research aims at integrating ecological networks modelling in a participatory approach in order to assess impacts of land-use planning scenarios on landscape connectivity. This approach was applied to the metropolitan area of Bordeaux, a highly dynamic territory that has been modified by several decades of rapid urbanization. Whilst ecological network modelling is widely used in the academic spheres, the concept of ecological network itself also rose within operational stakeholders acting in land-use planning. However, exchanges between scientists and stakeholders about this concept and its modelling and decision-making applications remain rare and generally relate to discussions about results of analyzes carried out by scientists on their own. To our knowledge, no studies to date have involved stakeholders throughout the whole modelling process. In this purpose, we developed an adapted companion modelling approach bringing together scientists and stakeholders for co-constructing (1) a multi-species approach based on ecoprofiles, (2) a conceptual model of the territory’s social-ecological functioning and (3) five land-use planning scenarios over a 15-years horizon. In parallel, we used a landscape graphs approach for modelling ecological networks of ecoprofiles, computing local and global connectivity metrics and estimating scenarios’ impacts on multi-species connectivity. The results globally showed negative impacts of dystopian scenarios or anticipated trends in planning on landscape connectivity (from −20.5% to −8.1% on average, respectively), and in a lesser extent positive impacts of utopian or transformative scenarios (+1.5% and 4.5% on average, respectively). Scenarios’ impacts also varied among ecoprofiles, with some ecoprofiles showing similar or antagonistic effects. These results served as a support of debates between stakeholders on the consequences of policy decisions and actions on connectivity, and on the possibilities of translating connectivity modelling in land-use planning and biodiversity conservation in an urban context.

这项研究的目的是将生态网络模型以一种参与性的方式进行整合，以评估土地利用规划方案对景观连通性的影响。这种方法被应用于波尔多市区，这是一个充满活力的地区，几十年来快速的城市化已经对其进行了修改。尽管生态网络建模在学术领域得到了广泛使用，但生态网络本身的概念也出现在从事土地利用规划的运营利益相关者中。但是，科学家和利益相关者之间关于此概念及其建模和决策应用程序的交流仍然很少，并且通常涉及对科学家自己进行的分析结果的讨论。据我们所知，迄今为止，还没有研究涉及整个建模过程中的利益相关者。为此，我们开发了一种经过改进的伴侣建模方法，将科学家和利益相关者聚集在一起，共同构建（1）基于生态概况的多物种方法，（2）领土社会生态功能的概念模型，（3）五15年内的土地利用规划方案。同时，我们使用景观图方法对生态概况的生态网络进行建模，计算本地和全球连通性指标并估算方案对多物种连通性的影响。全球范围的结果显示，反乌托邦方案的负面影响或规划中的预期趋势对景观连通性的影响（分别从平均20.5％到-8.1％），在较小程度上，乌托邦式或变革性情景的积极影响（分别为平均1.5％和4.5％）。情景的影响在生态概况之间也各不相同，有些生态概况显示出相似或拮抗的效果。这些结果为利益相关者之间关于政策决定和行动对连通性的后果以及在城市背景下土地使用规划和生物多样性保护中转换连通性模型的可能性之间的辩论提供了支持。