Evaluation Of Se-enriched Tea Garden In Baihe County Based On RS And GIS

Baihe County is a traditional tea production area in China.It is also located in the Ankang-rich selenium zone in Shaanxi Province.The tea produced in Baihe County is rich in selenium,a trace element necessary for the human body.In this context,Baihe County began to vigorously develop its wealth.Se tea plantation.With the development of the economic level,Baihe County is faced with the problems of blindly increasing the area,reducing selenium content in tea,and reducing the yield of tea in the area when expanding selenium-enriched tea gardens.In order to optimize the layout and planning of local selenium-enriched tea gardens,selenium-enriched tea is increased.Quality and production,rational and sustainable use of existing land resources,long-term and stable increase in the income of local governments and tea farmers,and research on the suitability evaluation of selenium-enriched tea gardens in Baihe County are of practical significance.Based on Landsat8 remote sensing imagery,DEM data,and Baihe County selenium-rich soil data in Baihe County,this study used ENVI software to interpret the acquired remote sensing image and extracted Baihe County traffic and water system feature layer data through ArcGIS.The software performs slope,aspect,section curvature,and elevation processing on the DEM data.After obtaining different data layers,the evaluation system of selenium-enriched tea gardens was established by using the analytic hierarchy process,and the evaluation objectives,principles,and evaluation factors were selected.Then,the terrain,soil,and traffic water data layers were based on the analytic hierarchy process(AHP)based on GIS technology.The determined weights were superimposed and analyzed to obtain a highly suitable area for the selenium-enriched tea plantation in Baihe County of 221.456 ?2,accounting for 15.5% of the total land area,and an area suitable for planting selenium-enriched tea trees of 298.177 ?2,accounting for the total area of the land.20.9%;The area suitable for planting selenium-enriched tea gardens is 500.761 ?2,accounting for 35.1% of the total land area;the area of selenium-rich tea plantation is not suitable for 405.978 ?2,accounting for 28.5% of the total land area.Through the study of the suitability of selenium-enriched tea gardens in Baihe County,a comprehensive analysis of the social and economic factors and technical elements of each township in Baihe County was carried out,a selenium-enriched tea garden plan suitable for each township was proposed,and the advantages of different townships in developing selenium-enriched tea gardens were found.Insufficiency provided a certain basis for the layout and optimization of Baihe Se-enriched tea plantation.