The Planting Design Of The Coastal Saline-alkali Land In Khao Sam Roi Yod National Park,Thailand

In the new stage of developing international tourism,Khao Sam Roi Yod National Park,as the largest coastal wetland park in Thailand,is seriously restricted by the salinity and alkali factors in the greening construction.Under the policy background of building china-thailand community,based on the successful experience of afforestation in China’s coastal saline-alkali lands,the research on the planting design of coastal saline-alkali lands can improve the quality of plant landscape in coastal saline-alkali lands and optimize the living environment and economic development environment.The saline-alkali land area in the world has reached956 million hectares.The research on the cultivation design of coastal saline-alkali land is conducive to solving the structural shortage of urban land and promoting the sustainable construction and development of coastal cities.It can also provide design reference and ideas for the more extensive coastal saline-alkali land greening construction,and implant the concept of ecological resource sustainability into the landscape design.In addition,scientific and rigorous planting design can also make the afforestation play the function of popular science.In this paper,literature research method,investigation method,case summary method and qualitative analysis method are used synthetically.The main research contents are as follows:(1)based on the analysis of the geographical location and social humanity of Khao Sam Roi Yod National Park,in hua hin,Thailand,the positioning of planting design is made.(2)For comprehensive control salinization impact factor,the soil texture,soil moisture content and soil plasticity index of 12 soil samples were analyzed in detail.The geology,landform,climate and hydrology of the study area were also analyzed.In order to guide the improvement of salinized soil,the degree of salinity was evaluated by measuring the pH value,eight basic ions,salinity and conductivity of the soil.(3)The contents of organic matter,total nitrogen,phosphorus,potassium and available phosphorus in soil,bulk density and porosity of soil were tested to guide soil fertilizer cultivation.(4)Then,based on the study of saline-alkali soil theory,combined with the situation of planting design plot,according to the law of water and salt movement,planting soil quality requirements,the relationship between soil salinization and garden plant growth and the existing saline-alkali soil improvement methods,the soil improvement matters are summarized,and targeted soil improvement measures are developed.Physical methods include deep ploughing and drying the soil,watering to remove salt,and shaping the terrain.Biological methods include planting salttolerant plants and raising earthworms.(5)By studying the salttolerant plant theory and according to the requirements of landscape ecology and planting design,the design principles and ideas were determined.(6)The salttolerant ability and ornamental characteristics of 66 garden plants were analyzed.The plot was divided into three parts of river bank,water area and land for planting design.Finally,16 representative plant configuration patter ns were formed.