Mianzhu "5.12" earthquake repair of city green building system

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Summary of "5.12" Wenchuan eArthquake, urban greening system to play an important role in disaster prevention and mitigation, but also severely damaged. Mianzhu city greening system according to post-disaster repair construction practice, post-disaster urban greening system proposed building should be repaired Attention, thinking green system reconstruction to provide guidance.

Keywords: "5.12" eArthquake; urban greening system; repair; building; Mianzhu
May 12, 2008, occurred in Wenchuan, Sichuan eArthquake that shocked the world, so that the eArthquake affected areas suffered varying degrees of damage. As the affected areas in Sichuan Province, one of the top ten with a focus on Mianzhu City, from the central area of the eArthquake - Wenchuan Yingxiu straight-line distance of the town is only 10 km or so, in this large earthquake losses. The statistics, death 11 117 people and injuring 38 000 people, 258 people missing, all of the city's 50 million people affected. residents of houses were destroyed over 90% of urban severely damaged infrastructure, the earthquake caused direct Economic losses of 1 423 billion.

1 Green function for disaster reduction system
"5.12" earthquake, in a panic in which people have fled the building, flock to parks, squares, streets and other green spaces a little far away from the building to evacuate the city green space, thereby reducing the secondary casualties of disasters on people. period of time after the earthquake, because of the frequent aftershocks and earthquakes on people's minds, causing panic, people fled the building home, in the open parks, squares and other green spaces to create temporary shelter for asylum. According to the statistics Mianzhu City's more than 60,000 victims in all of refuge to urban green space. Meanwhile, urban green space as a temporary relief command center, distribution center for relief supplies, disaster relief workers stationed, the temporary location of the hospital played a major disaster prevention and mitigation function, reduce casualties, and to appease the panic of the crowd.

Depression on the green caused by the earthquake, uplift, cracking and other directly affected, and because use of green space as a temporary refuge, victims of trampling the lawn, the destruction of trees and other plants, as well as carrying out post-disaster relief busy and are unable to be on the green maintenance and management, resulting in serious damage to urban green space, the urgent need to recover in the post-disaster reconstruction, for people to carry out the normal production and life to create a harmonious and beautiful environment [1].

2 post-earthquake reconstruction in the main urban greening system recovery measures
2.1 The development of near, medium and far the combination of urban greening plan, to increase urban disaster planning
With the launching of reconstruction and urbanization process accelerated, Mianzhu City, East New District and the start of the industrial park construction, reconstruction in the province of counterparts with the help of Jiangsu Province, Jiangsu Province, Planning and Design Institute from the assumed <<Mianzhu City recently Construction Plan (2008-2010 )>><< Mianzhu City Planning general (2008-2020)>> through the relevant expert groups and departments, assessment, planning the urban greening master plan as a professional urban planning, is bound to Mianzhu City green building has played an active role. urban greening disaster prevention and mitigation features in this earthquake has played an important role, which adds to people's capabilities for disaster reduction the importance of urban greening. urban green space planning in the development of disaster reduction to give the city Parks new functions which the design of the park green space put forward new requirements [2].

2.2 increase capital investment in greening, greening and continuously meet the needs of people
As social and Economic development and continuous improvement of living standards, people demand more obvious green, the performance of green space requirements for the growth and awareness of landscape quality. Meanwhile, to urban greening prevention, mitigation needs the need to increase the protection of green funds. Mianzhu City will be invested in the reconstruction of the original 1 000 million renovation and expansion of urban parks, and proposed a new "Spring Moon" park; input 1,000 million In the south of the expressway on both sides of the frames to create a 25 m Nan (Phoebezhennan S. Lee et FNWei), leaf poplar (Populus simonii Carr.) mixed to create a beautiful green forest channels. other �ϳ�������, construction of new city also planning a new green space.

2.3 fully integrated into the local culture, improve riparian afforestation and greening residential area
In the full integration of "wine village", "town pictures" and other local characteristics and cultural Mianzhu, based on the combination of green riparian restoration, the construction of a small square, the vertical transformation of the bank as part of the embankment slope and the natural slope revetment, increased aquatic plant distribution plant, the formation of hydrophilic riparian zone, a living environment to enhance the region's most important landscape axis. Meanwhile, the river to maintain the natural shape, there are deep pools, shallow riverbed changing the natural ups and downs, which not only help reduce river flow, reducing flood damage energy, for a variety of biological create a suitable habitat, but also conducive to the river's natural infiltration, is to supplement the groundwater of the important ways in which residential greening and building of synchronized planning, implementation, create a good livable environment .

2.4 vigorously tap resources of native tree species, rich in plant configuration
Mianzhu City is rich in wild plant resources, 45 families, according to preliminary investigations, 200 kinds of plants, of which there are many countries, primary and secondary protection of species. More characteristics of plants: large-leaved Lauraceae Nan (Machilus ichangensis Rehd . et Wils.), Yun Nan (Machilus pingii Cheng ex Yang), E. tereticornis Machilus (Pho-ebe hui Cheng ex Yang), Litsea (Litsea cubeba Lour.Pers.), leaves of Lindera aggregata (Lindera pulcherrima Wall.Benth .), black shell Nan (Lindera megaphylla Hemsl.), Yunnan Yun-nan (Machilus yunnanensis Lecomte), yellow flesh fruit Mao Nan (Actinodaphne trichocaaarpa Allen), leaves Gan Jiang (Lindera cercidifolia Hemsl.), etc.; Cornaceae moss tree lights (Bothr-ocaryum controversum Hemsl.Pogark.), Sichuan, Hubei and dogwood (Cornus chinensis Wanger.); fruit glands Ericaceae Rhododendron (Rhododendron davidii Franch.), lantern flower (Enkiantus chinensis Franch.) and so on. If these wild plants resources to be exploited, it will reduce capital investment in a large number of introduced species on local characteristics to create a unique landscape plants have a positive effect [3-5].

3 post-earthquake restoration of urban green space system Construction
Earthquake Rehabilitation green building can not be a simple resume, but to sum up the lessons of the earthquake disaster, the use of favorable factors, the height of the new stand, scientific planning, based on the long, focusing on features, learn new ideas, urban and rural, the comprehensive benefits of green space to play and function of the system [6]. According to the work of the practice and experience, I believe that post-disaster rehabilitation of urban greening the construction of the system should pay attention to the following aspects.

3.1 Construction of the urban landscape security pattern, attached great importance to Green Space System Planning
Urban greening is the leading urban greening and management basis. Urban afforestation have a new breakthrough, the key is to have a forward-looking and scientific planning of urban green space system. Learn from foreign advanced concept planning of urban greening and the successful experience of change the kind of green dotted with cities, they must attack, minor ancillary facilities to green the city for the green model, we should focus on the overall urban environment system construction. to break the traditional urban planning methods, the use of "anti-planning" theory (Yu Kongjian , LI Di Hua <"Urban Landscape of the Road>>), priority planning and design of urban ecological infrastructure. �ɳ������� disaster, especially in conjunction with the construction of urban green space system planning should be placed in an important position, in the limited land area, in the most Economic and efficient pattern, to maintain ecological processes of health and safety hazards of the process control, building the urban landscape security pattern, to achieve the sustainability of living environment.

3.2 Enhanced capacity of cities to withstand natural disasters, increase the green space system disaster prevention, mitigation function
More and more catastrophic Wenchuan scientists realize that it is by no means a simple natural disaster, if only "natural disasters" to sum up the disaster, many questions will be ignored, such as the disaster has exposed the security disaster emergency management "short board", to China's disaster prevention, mitigation work sounded the alarm. from the current preparation of a number of cities have urban green space system point of view, it reflects a normal period of urban green features, from full disaster reduction and relief capabilities to play a green point of view there are still lacking. Therefore, the construction of urban green space system in response to the role of green space in the very period to study, and attach great importance to increase the content of disaster prevention and mitigation planning green, the green system into urban disaster system in order that urban green space into the city and places an effective means of disaster reduction.

Links to Research Papers Download http://www.hi138.com Construction of green space system should be increased for the typhoon, landslide landslide, flood, fire, infectious diseases, disaster prevention content, sought by health isolation zone, the protection of windbreaks, and other main urban green space, the formation of urban green space system for disaster prevention to reduce hazards and improve the city's disaster prevention and immunity. for disaster and disaster considerable period of time, to green the system as a place of refuge and asylum channel, constitutes urban disaster prevention system.

3.3 The local characteristics of the formation of the green space system, emphasizing local culture
Like gardening and urban architecture should reflect the style and features of a place. You can not focus only on quantitative expansion, while ignoring the greening effect and local characteristics. We should fully take into account the natural landscape and history, culture, emphasis on "local conditions" concept building reflects the local urban landscape, local culture, local characteristics of the green boutique, full of local characteristics of the formation of green space style [7]. focus on promoting the use of native plant species mining, cultivation for local growth, strong ecological function of green plants. in the plant configuration should be emphasized that the principles of ecology, follow the naturalness, diversity, landscape, economy principles.

Emphasis on the use of native trees, plants that can not be overemphasized. Full use of abundant local plant species, the formation of diverse plant communities, development and utilization of green resources to increase the adaptability of species and expansion of green space diversity combined populations of species that Community populations tend to complement each other, make full use of light, heat, water, soil, gas and other resources to enhance the productivity of urban green space and stability of community structure to maximize the ecological benefits.

3.4 Coordination of urban green space and construction of the clear organic integration of the environment
With the accelerating process of urbanization, rural and urban greening system fully integrated to take into account [8]. Especially the green environment, urban and rural areas can not be separated, to draw clear boundaries, we should join into the outskirts of the city planning system throughout the city green in the formation of a green environment organic systems. to the ecological principles as a guide to urban and rural development as the idea of establishing suitable and urbanization, the urban greening as the core, eco-green suburbs of the urban and rural based Big Green system. attention to protecting the natural mountain suburbs, rivers, the implementation of forest transformation, closed forest, to guide farmers to adjust the agricultural structure, the development of green industries, agriculture, tourism and leisure, so that both the ecological benefits, but also Economic benefits. adhere to the City with the township to township to promote the city, urban-rural linkage, so that coordination of the harmonious development of urban and rural ecological environment, the integration of rural and urban greening.

4 References
[1] package Zhiyi, Chen Bo. Urban green space system construction and urban disaster prevention [J]. Natural Disasters, 2004,13 (2) :155-160.

[2] Chen Bo, including Zhiyi. Ecological Restoration Design in Urban Landscape Planning [J]. Chinese garden, 2003 (7) :44-47.

[3] The six-Ting Chen, Liang Mei. Landscape Architecture Art and Design [M]. Beijing: China Textile Press, 2004.

[4] Fu BJ, Chen Xiang Li, Ma Keming. Landscape Ecology Principles and Applications [M]. Beijing: Science Press, 2001.

[5] Xu H. Landscape Ecology [M]. Beijing: China Forestry Publishing House, 1996.

[6] WANG Xiang-rong. Ecological Landscape and urban environmental protection [J]. Chinese gardens, 1998,14 (2) :14-16.

[7] Lin Geng, Xia Qing. To create eco-system of urban green space - green space system planning practices of Shenzhen Special Economic Zone [J]. Construction of 1997,12:37-39.

[8] Yu, LI Dihua. Urban landscape - and with Mayors, [M]. Beijing: China Building Industry Press, 2003.

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