The Research On Plant Landscape Of Freeway In The North Of China

As one of the national critical infrastructure, freeway construction plays a significant role in our national economic development. Along with the quick step of freeway construction, people gradually realize the convenience that the freeway has brought, the great ecological damage is followed. The requirements of highway safety, eco-efficiency are also increasing. People are trying to give consideration to both the development of the freeway construction, and the landscape construction of freeway, which can play an active role in beautifying the environment and ecological recovery.Compare with the construction and development of freeway, the research about plant landscape of freeway is still in the initial stage in China and fall behind. The constructions of plant landscape of freeway in the most parts of China are nearly the same.Because of natural environment conditions and the limited economic level, which lead to the great difference between the south and north parts of China. Due to the dry and cold weather, more snow in winter, it is hard to maintain a long-existed plant landscape. Few studies have assessed the construction of plant landscape of freeway in north China and the theory system is immaturity. So it is important to research on plant landscape of freeway in north China, and find out the reasonable approaches of construction.By the method of reading documents, investigation and study, we analyze the current development situation of plant landscape of freeway in home and abroad. Sum up the composition and function of freeway plant landscape. Through these studies we can hold the basic concept and contents and find out what restrictd the development of the construction of freeway's plant landscape in north China. Then we propose our objectives and principles make sure the key point. of the construction of freeway's plant landscape in north China.Propose freeway safety from the perspective of environmental and ecological point of view, the perspective of sustainable development of landscape design and landscape development of the north expressway innovative plant design, the aim is to provide the basic theory for the north highway construction and development of plants. Through the research, the paper draws the following conclusions:1. In our study, we analyze the composition and function of freeway plant landscape, and get the restrictive factors of development of the construction of freeway's plant landscape in north China.①Lack of the professional guidelines of landscape design, and the landscape is always ineffective.②The construction of plant landscape is lack of scientific.③Ignore the environmental constraints.④The building system is incomplete, rough construction of maintenance.⑤Lack of the deep consideration of plant landscape construction in the northern freeway, enture the entry point that is from the perspective of stability of plant community to develop plant landscape in northern freeway landscape.2. Proposed the design of the plant landscape in northern that is conducive to the freeway safety, the environment-friendly landscape and ecology of plant communities, build stable freeway, maintain a sustainable development of landscape plants in north freeway north, including people-oriented principle of respect for nature and sustainable development principles, the principle of appropriateness,safety principles, the principle of formal beauty, general principles of the northern freeway, which includes the principles of landscape design, landscape design for the provision of the north freeway the theoretical foundation and basis. We identified the key of freeway's plant landscape in north China, which is based on the security of the north freeway and the environmental sustainability, ecological landscape design.3. Based on the security of the north freeway's plant landscape design, we determined the entry point of the construction of the plant for the sake of thinking about the north freeway safety, and proposed buffer protection of median plant safety and the design focus point. Select branches with dense, strong flexibility, better properties, or pruning of the hedge on the freeway greening, can play a better role of a buffer protection. The effective way to guarantee the security is to plant median strip on the use of distance measures.4. Plant landscape in the north freeway put forward the sustainable development of environmental protection and ecological concepts into design ideas to the north freeway. Environmental protection is embodied in the design of wind and noise reduction. Ecological plant landscape analysis of highway design features, for the central reserve, the slope and the interchange zones puts forward several green landscape design elements, that proposed the design points of maintain sustainable development of the north freeway stability of plant landscape and plant construction. From view of reduce the ecological vulnerability of plant communities in northern freeway to determined the plant selection and configuration.5. The design of plant landscape in north freeway is pluralistic, and provide new insights that combine topography, water features and other garden plants landscape elements to freeway construction. Through increasing light and mark, which are non-life elements, to enrich landscape plants in north freeway.6. On the base of methods of sustainability plant construction of the north freeway,we should offer the development strategy of sustainable plant landscape from other aspects. Design before the full grasp of freeway, found multi-disciplinary professional design team, targeted preserve according to different parts, and establish comprehensive evaluation system for freeway plant landscape.