| 摘要: |
| 以城市设计作为工具，对2 种琶东开发方案下该地区所需的蓄洪量进行检验。琶洲岛位于中国珠江三角洲，地处广州中心地带的南部。琶洲岛因毗邻广州金融区，成为城市战略性发展的黄金地段；琶洲岛西部地区也成为互联网创新集聚区的一部分。根据目前琶洲岛东部地区的城市设计方案推测，未来琶东将会成为地域性的商业中心。因此，对2 种发展方案进行对比，并分析2 种方案预计可为暴雨时节提供的蓄水量，以及面临洪水和汹涌潮汐时所需要的保护措施。方案1 将开发所有可用的土地，而方案2 则将目前地势较低的场地作为暴雨期间可被淹没的湿地。基于1981—2017 年间出现过的最大蓄洪量需求进行计算，并得出结论：百年一遇的雨洪可被储存于80 hm2 的现有低洼地带中，深1.34 m。最后，向地区政府提议，要求对琶洲岛周边地区进行适应性设计，以便进行防洪，并在低洼未建成区域进行适应性蓄水设计，免除方案1 中建造昂贵蓄水装置的需求。还为岛上的村庄描绘了另一种未来蓝图，其中包括一个位于岛屿东南岸极易遭受台风和海浪灾害的渔村。 |
| 关键词: 风景园林 珠江三角洲 琶洲岛 水资源管理 韧性城市形态 |
| DOI：10.14085/j.fjyl.2019.09.0045.12 |
| 分类号:TU986 |
| 基金项目: |
|
| An Island in Transition: Adaptation of Urban Form |
|
Authors: (DEU) Peter Bosselmann1, Authors: (USA) Mathias Kondolf1, Authors: (USA) Patrick Webb2, Translator: LI Shiyao1
|
|
1.UC Berkeley;2.San Francisco
|
| Abstract: |
| The article introduces urban design as a tool to test the storm-water storage needs of two alternative development scenarios for the eastern portion of Pazhou Island in the Pearl River Delta. The island is located directly to the south of Guangzhou’s central area. As reflected in historical maps, the island was formed by longterm accretion of river sediments around two rock outcrops between the front channel of the Northern Pearl River and the Whampoa Canal. Pazhou Island’s strategic proximity to Guangzhou’s financial district has made it a prime location for urban development, and the western portion of the island became part of a media and new technology district in the second decade of the 21st century. In light of current proposals to turn the eastern part of the island into a major commercial concentration of the new Pearl River Bay polycentric region, we contrast two development scenarios and analyzed how well each could provide for the water storage needs required during heavy typhoonal rains, and the protections needed against riverine flooding and tidal surges. One scenario would develop all available land, while the other would leave currently low-lying land available as wetlands that can be flooded during storm events. We based our calculation of storm-water storage needs on a 1981—2017 maximum. daily precipitation record. We conclude that 100 year rainfall can be stored on 80 hm2 existing lowlying wet-lands, 1.34m deep. We end the article with recommendations to the regional government for adaptable designs of the island perimeter for flood protection and for adaptable design of water storage in low-lying unbuilt areas thus largely avoiding the need for expensive water storage chambers or vaults under roads that would become necessary, if all available land would be developed. We also delineate alternative future conditions for the villages on the island, including a fishing village that is openly exposed to typhoonal wind and waves along the island’s south-eastern shore. |
| Key words: landscape architecture the Pearl River Delta Pazhou Island water management adaptation of urban form |
| 引用本文: | 著：（德）彼得·鲍斯文,著：（美）马蒂亚斯·康道夫,著：（美）帕特里克·韦伯,译：李诗瑶.变迁中的岛屿——韧性城市形态[J].风景园林，2019，26（9）：45-56. |
| Authors: (DEU) Peter Bosselmann,Authors: (USA) Mathias Kondolf,Authors: (USA) Patrick Webb,Translator: LI Shiyao.An Island in Transition: Adaptation of Urban Form[J].Landscape Architecture Journal, 2019, 26(9):45-56. |
|
