西汉文学家司马相如在著名的辞赋《上林赋》中写道：”荡荡乎八川分流，相背而异态”，描写了汉代长安上林苑的巨丽之美，自此有了”八水绕长安”的记叙。 八水之一的渭河是黄河的最大支流，也是西安和咸阳的母亲河。在西咸一体化城市扩展的背景下，渭河沿线的自然乡野河滩承受着被城市化的压力。城乡交错区的水环境不断恶化，乡野河滩迅速消失，河滩湿地被水泥护堤取代，人们对乡野大地的归属感越来越强烈。 渭柳湿地公园建设在渭河流经咸阳市渭城区河段存留不多的自然洪泛滩地之上，总长约3200m，宽约470m，占地面积约125hm2。本项目获得2018艾景国际园林景观规划设计奖唯一的卓越景观设计奖。

Wei River is not only one of the famous “Eight Rivers of Chang’an” described in Chinese historical literature and the biggest tributary of the Yellow River, but also the “mother river” of both Xi’an and Xianyang City. But as the urbanization progress of these two cities, the once natural riparian areas of Wei River have gradually been replaced by concrete dykes and decorative greenery planting. The constant degradation of the wild riverside landscape has also contributed to the loss of the sense of belonging, for the people who have lived in this rural area for generations.Weiliu Wetland Park was constructed on a section of Wei River’s riparian zone outside of Xianyang City, which was one of the few naturally flooded river sections that remained. It is approximately 3200m long and 470m wide, with a total area of 125ha.

▼项目地区位及上、下游现状，Images above: site location, existing conditions upstream and downstream

渭柳湿地公园所处的河段面临许多问题：场地上游河滩的自然原貌已被硬化水利工程取代，场地内的乡野河滩也面临着因城市化进程而破坏的压力；场地下游的河滩已被城市园艺化景观取代，河滩原有的物种丰富度和生物多样性下降，河道的自然生境系统严重退化；场地中多条城市雨污合流排水明渠经河滩排入渭河，在导致渭河水质恶化的同时严重污染了自然河滩的水环境（现场监测采样基本为劣五类）；附近居民在滩地自发开垦了大量莲塘和菜地，反映出市民拥有强烈的对自然乡野和田园生活的诉求。

The project site had several major issues: The flood plain of the Wei river immediate upstream had been replaced by engineered concrete dykes, which put more flood pressure on the site. The adjacent area downstream had also been urbanized but with decorative planting, causing a major loss of local habitat and biodiversity. There were several roughly dug ditches across the site carrying stormwater run-off (and sometimes leaked sewage) from the city to the river, which has polluted not only the river itself but also the riparian aquatic environment (local sampling showed riparian water quality worse than Class V of the National Surface Water Standards). Finally, local residents had reclaimed a large area of the site for lotus ponds and vegetable farming, which showed a demand for the lost rural lifestyle.

▼实施前场地现状——饱经风霜的现状土堤、荒废的河滩地、雨污河流排水明渠和居民在河滩上开垦的菜地， site before – existing earthen dyke, deserted riparian area, stormwater ditch and reclaimed vegetable farms

应对上述问题，本案以全面恢复和重建自然河滩的生态系统服务为首要目标，通过水安全、水环境、水生态、水休闲四大策略营建集洪水公园、海绵公园、城市公园于一体的城市综合绿色基础设施，实现适应性防洪、雨洪调蓄、废水净化再生、生物多样性修复、多样休闲和艺术化体验等多重服务价值。

To solve the issues described above, the comprehensive restoration and reconstruction of the local riparian ecosystem was the main goal for the project. A plan was developed to create urban Green Infrastructure through a series of strategies including adaptive flood control, stormwater management, water quality improvement, waste water reuse and biodiversity restoration, which would transform the site into an urban park that provides multiple values on environment and people.

▼总体设计思路，overall strategy

▼总平面图，the master plan