Study on Constructing of Green Infrastructure and Riparian Wetland of Cities in Northwest Semi-Arid Area

Abstract

Northwestern China is situated at the semi-arid climatic zone with a fragile eco-environmental condition. Natural landscape in this region has been largely impacted by development cities, and also has great contribution to culture implications of cities. At present, the way of urbanization, which emphases more on economic development rather than ecological protection, has jeopardized the natural landscape and environmental resources relied for survival by cities, and cities in Western China are facing even serious challenges of environmental degradation during rapid urbanization process. Green infrastructures of cities are guarantee of its citizens to get access to ecological services, and construction of green infrastructure is the major ecological counter measures for dealing with negative environmental impacts led by rapid urbanization, based on protecting environmental resources, ameliorating ecological process, and rebuilding natural landscape. Taken Xian as an example, it reviewed the construction of riparian wetland, which is one of the major components of green infrastructure in Xian. This research provided the methodology for riparian landscape constructing based on ecological and cultural characteristics of riparian landscape.