Optimizing Peri-URban Ecosystems (PURE) to re-couple urban-rural symbiosis.
Optimizing Peri-URban Ecosystems (PURE) to re-couple urban-rural symbiosis.
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DOI：
10.1016/j.scitotenv.2017.02.094
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发表时间：
2017-05
期刊：
影响因子：
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通讯作者：
Yong-guan Zhu;B. Reid;A. Meharg;S. Banwart;Bojie Fu
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文献类型：
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作者：
Yong-guan Zhu;B. Reid;A. Meharg;S. Banwart;Bojie Fu
在全球范围内，快速城市化沿着经济发展，正在极大地改变生物地球化学循环的平衡，影响生态系统服务，并冲击联合国全球可持续性目标（阿利亚其他外：可持续城市和社区;负责任的消费和生产;良好的健康和福祉;清洁的水和卫生设施;以及保护和养护陆地和水下生命）。城市生态系统的一个关键特征是，碳（C）、氮（N）和磷（P）等营养物质储量正在增加。此外，城市生态系统是高度工程化的，城市生态系统内营养物质的生物地球化学循环在空间上是分离的，从农村/城市周边地区输出的营养物质（如食物）没有返回，以支持这些环境中的初级生产。为了解决这些不平衡，我们提出了城市周边生态系统（PURE）的概念。通过融合与临界区科学和演替顶极动态相关的概念方法，PURE服务于农村/自然和城市生态系统之间的共生界面，并允许重新耦合资源流。PURE为应对最紧迫的社会挑战和支持全球可持续发展目标提供了框架。
Globally, rapid urbanization, along with economic development, is dramatically changing the balance of biogeochemical cycles, impacting upon ecosystem services and impinging on United Nation global sustainability goals (inter alia: sustainable cities and communities; responsible consumption and production; good health and well-being; clean water and sanitation, and; to protect and conserve life on land and below water). A key feature of the urban ecosystems is that nutrient stocks, carbon (C), nitrogen (N) and phosphorus (P), are being enriched. Furthermore, urban ecosystems are highly engineered, biogeochemical cycling of nutrients within urban ecosystems is spatially segregated, and nutrients exported (e.g. in food) from rural/peri-urban areas are not being returned to support primary production in these environments. To redress these imbalances we propose the concept of the Peri-URban Ecosystem (PURE). Through the merging of conceptual approaches that relate to Critical Zone science and the dynamics of successional climax PURE serves at the symbiotic interface between rural/natural and urban ecosystems and allow re-coupling of resource flows. PURE provides a framework for tackling the most pressing of societal challenges and supporting global sustainability goals.