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Xi’an University of Technology (2019)

Analysis of Water-Saving Characteristics and Evaluation of Land Quality in Dajihan Sandy Land of Northern Shanxi Province

解欢;

Titre : Analysis of Water-Saving Characteristics and Evaluation of Land Quality in Dajihan Sandy Land of Northern Shanxi Province

Auteur : 解欢;

Grade : Master’s Theses 2019

Université : Xi’an University of Technology

Résumé partiel
China is in the period of accelarated industrialization and urbanization.On the one hand,due to the competition and seizure of social and economic development,the trend of shrinking arable land is increasingly apparent ;On the other hand,a lot of bad behavior,such as discharge of soil erosion,solid waste,waste water,waste gas,heavy use of pesticide and fertilizer,sewage irrigation,lead to a severe decline in the quality of existing arable land and impact on the country’s food security.In the face of increasingly severe soil issues,the Party Central Committee and the State Council promulgated the "Soil Pollution Prevention Action Plan"(hereinafter referred to as "Soil Ten")in 2016 and the "Soil Environmental Quality Standard" in 1995.Undoubtedly,they have become the action program of soil pollution prevention and control in China at present and in the future.They are also an important guarantee for improving the quality of soil environment,ensuring farmland and food security.Mu Us sandy land is one of the four sandy lands in China,and it is also the cultivated land reserve resource in China.In order to solve the problem of land desertification in Mu Us sandy land and fully discover the potential of cultivated land,many scholars have devoted themselves to sand land governance and achieved abundant research results.Based on a large number of sand control measures,this paper took the development of Dajihan sandy land in Yuyang district as the research object,and focused on the engineering technology and application of the mixing soils farmland technology of arsenic sandstone and sand.According to the requirements of "Soil Ten "and" Soil Environmental Quality Standard",this paper respectively determined the regulation and standard of qualitative evaluation of sand land treatment as well as the basis of-soil quantitative evaluation and the improvement measures for sand land treatment.First of all,the evaluation process of the treatment process effect of Mu Us sandy land was constructed.Then,the dynamic change of the evaluation process of the treatment process effect of the sandy land was realized by relying on the knowledge visualization integrated platform and componentization technology,so as to achieve the process and comprehensive evaluation of strengthening soil quality.The quality evaluation ran through the whole process of sand land treatment,and the main problems in each stage of soil improvement can be found out in time By using the method of qualitative and quantitative analysis,the effect of sand land treatment was evaluated and the improvement measures were improved

Mots clés : Mu Us sandy land; water-saving characteristics; mixing soils farmland technology of arsenic sandstone and sand; soil quality evaluation; process evaluation;

Présentation (CNKI)

Page publiée le 20 mai 2020