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Analysis of Landscape Water Restoration Strategy in Loess Area Based on LID
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摘要: 随着城市化进程加速,各种生态环境问题开始出现,其中水环境问题近年来尤为突出,基于此背景下LID(Low Impact Development)成为了风景园林行业研究的热点问题。我国是世界上黄土分布最广泛的国家,所以黄土地区景观成为了我国景观不可或缺的一部分。黄土地质因其易产生突变性、非连续性和不可逆性,加大了对洪峰流量、径流污染与雨水调控的控制难度。针对上述特殊性挑战,根据场地环境通过GIS等一系列分析,选取融合环境的LID措施,此外针对黄土这一特殊地质条件,进行因地制宜的人工改造,打造特色北方山水意境的生态绿色景观,并基于GIS与MIKE的数据模型对项目的LID方案进行雨洪评价分析。经过改造设计,场地内洪峰控制、径流污染、雨水调蓄等能力皆达到设计预期,证实了黄土条件下科学地融入LID技术是可行的。Abstract: With the acceleration of urbanization, a variety of ecological and environmental problems began to appear, especially in recent years. Under this background, LID (low impact development) has become a hot issue in landscape architecture industry.China is the most widely distributed loess country in the world, so the loess landscape has become an indispensable part of the landscape in China.Loess geology is prone to mutation, discontinuity and irreversibility, which makes it difficult to control flood peak discharge, runoff pollution and rainwater regulation.Aiming at the above special challenges,according to the site environment, through a series of analysis such as GIS, this paper selected LID measures to integrate the environment. In addition, aiming at the special geological condition of loess, artificial transformation was carried out according to local conditions to create ecological green landscape with unique northern landscape artistic conception. Based on the data model of GIS and MIKE, the rain flood of LID scheme of the project was evaluated and analyzed. After the transformation, the flood peak control, runoff pollution and rainwater regulation and storage capacity in the design site could meet the design expectations, which proved that it was feasible to integrate the scientific LID technology into the loess condition.
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Key words:
- collapsible loess landscape /
- LID /
- landscape restoration strategy
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