Between Land & Sea

Abstract

The Netherlands, primarily a Delta nation, is confronted with significant challenges in adapting to the impacts of climate change and rising sea levels. And the urgency to prepare for a significant climate change is more than ever, now 9 years after the Paris agreement, the feasibility to keep to the agreement of 1,5 degree is shaky. The pressures of climate change, rising sea levels, increased demands on limited freshwater supplies, and more frequent extreme weather events are exposing the limitations of human control over the environment (Meyer, 2014).
Traditionally, the delta has been a dynamic landscape shaped by tides, wind, and currents. However, over the centuries, human intervention has increasingly dominated and transformed this landscape, leading to reduced dynamics, adaptability and biodiversity. The dynamic landscape is mechanically controlled with dikes, dams, sluices, and pumps. These highlights of water engineering make the Netherlands considered a pioneer in water management and flood protection. But to keep this postion we need to adapt and react on the changing future a head.

The human utilization of the delta aligns with the prevalent anthropocentric worldview, where nature is perceived as serving the direct or indirect needs of humans. This exploitative attitude towards the natural world has resulted in negative consequences, as we are currently witnessing. Nevertheless, there is a shift in this perspective, with two-thirds of the Dutch population considering themselves part of nature and feeling a responsibility to care for it. This view is a combination between the roles of stewardship and participant. (Schouten, 2013).

This master thesis has explored the research question of what the return to a (semi-) open delta would mean for the green-blue network of Schouwen-Duivenland, and what spatial framework and guiding design principles would be necessary to sustain and upgrade both the green-blue networks and livability, now and in the future.

By conducting a comprehensive analysis at the delta scale, this study identifies 6 key challenges: water safety, sediment deficiency (zandhonger), biodiversity loss, water quality, and saltwater intrusion. A more focused analysis at the island scale enables the exploration of solutions to these challenges and the establishment of design principles.
The proposed design principles, guided by a nature-based solutions approach, highlight the fundamental importance of soil and water. These principles address challenges posed by agriculture, urbanization, water management, and climate change, aiming to create a resilient and nature-inclusive environment. To facilitate their implementation in different contexts, the design principles have been transformed into practical pattern cards, offering clear and practical guidance.

In conclusion, this master thesis has provided valuable insights into the potential benefits and spatial implications of returning to a (semi-) open delta for Schouwen-Duivenland. The research highlights the importance of integrating green-blue infrastructure, ecological considerations, and livability aspects to create a resilient and thriving environment for both nature and people. This study offers valuable insights for policymakers, urbanists, landscape architects and researchers in the pursuit of a sustainable and nature-inclusive delta landscape.