Research On Plant Disposition Of Coastal Saline-alkali Land

Saline land is an important reserving land resource of China.It occupies a large area from inland to coastal areas.Generally,saline land is ecologically vulnerable area with poor environment due to the particularity of saline soil.Coupled with the impact of natural factors and human factors,soil salinization is still increasing year by year,which has seriously restricted the landscaping construction and development of the coastal cities.It is of great significance to improve the saline land and create a beautiful plant landscape in the saline area to make the greatest ecological,ornamental and social benefits in order to promote the ecological sustainable construction and development of coastal saline areas.The methods of literature review,field investigation,qualitative analysis and case summary were used in this paper.And some discussion about coastal saline plant disposition as follows:1.On the basis of field investigation,a lot of relevant literatures were reviewed,and have made a deep analysis and research on the greening improvement of saline land and the plant species selection and the disposition patterns of saline land which can provide the necessary theoretical guidance for the plant landscape construction and greening disposition of coastal saline-alkali areas.2.The result shows that 105 kinds of northern coastal common salinity plants are analyzed from different aspects of salt tolerance and growth characteristics,and the landscape value are evaluated from different viewing angles of flowers,fruit and foliage which can provide abundant plant material for the landscape design of northern coastal saline land.3.Taking the saline area in Tianjin Binhai New Area as an example,this paper puts forward the design principles the plant landscape design should follow and takes the combination of various benefits such as ecological benefits,landscape benefits and economic benefits of coastal saline-alkali land and creates a regional cultural characteristic iconic plant landscape as the design concept.Based on the detailed analysis of the natural environment conditions such as climate,soil,landform and vegetation,the whole area planning is carried out according to its actual conditions.The landscape design and characteristic plant disposition patterns with making use of salinity plants are formed in order to play the greatest ecological benefits,landscape benefits,economic benefits and cultural benefits of coastal saline-alkali land plant communities.4.This paper analyzes the characteristic plant disposition patterns in landscape design and puts forward that the patch landscape design of coastal saline areas should follow three plant selection disposition bases containing taking native salinity plants as the main,the use of high ornamental salinity plants and focusing on community species diversity and the road landscape design of coastal saline areas should follow two plant selection disposition bases containing the use of high survival plants and focusing on plant landscape hierarchy which can provide some scientific basis and demonstration case for the plant landscape design of northern coastal saline areas.