Measures that integrate social, economic and ecologic land use functions have increasingly raised the interest of scholars and practitioners concerned with sustainability. However, achieving effective integration involves important governance challenges. One challenge is that actors need to work across social, cognitive and physical boundaries. This article studies how actors span, but also challenge, defend and construct boundaries over time during integrative processes, and what temporal sequences of boundary actions help to realize effective integration. It does so with a comparative longitudinal analysis of two cases of Multifunctional Land Use. We find three main patterns: First, to bridge boundaries, they first need to be created, strengthened and explicated, whilst also connecting actors where possible. Second, after a period of spanning and challenging, reconstructing boundaries can help to keep the process manageable, provide safety and maintain autonomy. Third, challenging boundaries is often necessary to realize integration, even when this stirs up conflicts and internal discussions.

整合社会、经济和生态土地利用功能的措施越来越引起关注可持续性的学者和从业者的兴趣。然而，实现有效整合涉及重要的治理挑战。一个挑战是参与者需要跨越社会、认知和物理界限。本文研究了参与者如何跨越，以及随着时间的推移挑战、捍卫和构建边界在整合过程中，边界动作的时间序列有助于实现有效整合。它通过对多功能土地利用的两个案例进行比较纵向分析来做到这一点。我们发现了三种主要模式：首先，为了弥合边界，首先需要创建、加强和解释它们，同时尽可能连接参与者。其次，经过一段时间的跨越和挑战，重建边界有助于保持流程的可管理性、提供安全性并保持自主性。第三，挑战边界往往是实现整合的必要条件，即使这会引发冲突和内部讨论。