让自然做工：自然过程主导的太原城市生态系统修复

城市生态问题是基于不健康的人地关系所导致的,人口膨胀、城市扩张和资源性产业过度是导致城市生态问题的具体动力。城市生态修复是对城市生态关系的修复,通过城市生态系统分析诊断生态问题形成的关键关系和根本动因,通过积极有限的干预,协调自然过程的相关变量,建立自然过程主导的城市生态系统修复框架和路径,让自然做工。以太原市城市生态修复为例,探索建立以山地绿量为关键调节变量,通过绿量的快速提升修复冷岛效应、水源涵养效应、坡地风效应、建立“水绿共举,复绿养水,水绿孕城”的系统理念,实现城市系统整体格局修复、山地修复、水体与水系统修复、城市森林与绿地修复和棕地的系统修复。

Nature Works: Urban Ecological Restoration of Taiyuan with Natural Process

Urban ecological problems are caused by unhealthy relationship between human and land, of which population expansion, urban expansion and excessive resource industry are the specific driving forces. Urban ecological restoration is the restoration of urban ecological relationships. By analyzing and diagnosing the key relationships and fundamental causes of ecological problems through urban ecological system, and by coordinating the related variables of natural processes through active and limited intervention, the framework and approaches to urban ecosystem restoration with natural processes are established. Based on the practice of Taiyuan ecological restoration, this paper explored the way of establishing mountain green biomass as the key regulating variable which would fix cooling island effect, water conservation and slope winding effect while rapidly increasing the green biomass, and set up the systematic concept of "the green as the root, accumulating the water and conceiving the city together". Finally it realizes the restoration of total ecological pattern, mountain system, water system, urban forest and green space, and brownfield of the city.