| Based on the basic knowledge of land suitability analysis at home and abroad,Arc GIS will stack the relevant indicators of Alashan Left Banner to further explore the development trend of sand area ecological industry and the change of surrounding environment.The detailed can be summarized into the following parts:(1)The dynamic change analysis of the survey data of land resources utilization research status of Alashan Left Banner from 2009 to 2018 is carried out.The change range,change speed and structure evolution of land use in the past ten years are analyzed.It is found that the change range of land use for transportation and transportation is 112.6% in the research period,and the change range of urban and industrial and mining land is 25.79%;The study found that the overall structure of land use in Alashan Left Banner was more and more balanced during 2009-2018.The increase of transportation land has played an important role in the rapid expansion of the industrial chain,while the enterprises for the purpose of research choose the areas with better basic conditions and mainly distributed in forest and grass for development.(2)During the study period,the area of severe desertification in Alxa Left Banner is relatively large.With the change of time,the situation of desertification is gradually improving.The area ratio of moderate desertification and mild desertification has increased,and the serious desertification has decreased from38.21% in 2009 to 22.51% in 2017.According to the different types of enterprise development,enterprises like mengcao choose areas with less desertification,while enterprises like Congrong group choose areas with strong development.(3)Through the construction of ecological index evaluation system in Alxa Left Banner,this thesis analyzes the impact of the corresponding index layer on the suitability of enterprise development,and finds that with the passage of years,the non suitability is gradually improved in the continuous development of enterprises,and the area of non suitability land is reduced by 535124.17hm~2 in ten years,It gradually transformed to moderate suitability and high suitability;In the land suitability evaluation map,through the distribution points of industries,it is found that the suitability of the surrounding areas for the development of all kinds of enterprises has also improved.It can be seen that the choice of development sites does not determine the development trend of the enterprise.There is no purely unsuitable area for development.All kinds of enterprises have their own development models and corresponding countermeasures for development in poor areas.This paper mainly analyzes the spatial heterogeneity and main business industries of typical industries in Alxa Left Banner,and analyzes the resource availability and limitation,which also provides a theoretical basis for further research and development level direction of sand industry in the future. |
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