Practice of Nature-based-Solutions in Chongqing, China

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Yan Zhou, Ming Luo, Zihan Zhai, Manyi Li, Lei Ma, Shaohua Li

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As a municipality of middle and western China, Chongqing is a representative city of rapid urbanization. Chongqing has unique ecological background characteristics, such as the integration of mountains, cities and rivers. The three types of natural elements, mountains, valleys and rivers, constitute a complex development space where multiple ecosystems coexist and interact, and human live. Affected by factors such as geographical pattern and historical development, Chongqing is faced with the problems of heavy pressure on resources, and unbalanced development between human and environment. It is necessary to carry out urban ecological restoration systematically. This article introduces Chongqing’s practice in urban ecological restoration, such as systematic planning of conservation and restoration projects, scientific layout of green infrastructure based on the concept of close to nature, building a symbiotic ecological self-purification system, and establishing an intelligent supervision platform. The relevance between the practices of Nature-based-Solutions criterions about design by scale, societal challenges, biodiversity, and adaptive management is discussed. Through urban ecological restoration, Chongqing successfully reconstructed urban landscape suitable for floods, improved urban ecosystem services, strengthened the effectiveness of supervision and management. Therefore, societal challenges including disaster prevention and mitigation, water security, environmental degradation, and biodiversity loss were effectively solved. The case of Chongqing not only provides new ideas for solving the problems of socialeconomic-natural complex ecosystem, but also contributes Chinese-style Nature-based Solutions for urban ecological restoration.

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Pre-approved for CECs under SER's CERP program