摘要本文以徐州市地貌类型、地面坡度、土壤类型、有机质含量、全氮含量、地下水埋深、农业气候区划、距沟渠距离、含磷量、土地利用类型这十个图层的原始栅格数据为数据源，利用ArcGIS软件，在结合通过主观方法（专家打分法、排列比较法、层次分析法）和客观方法（主成分分析法、熵值法、模糊综合评价法）确定出来的权重的基础上，通过空间分析中的叠加分析对徐州市农用地适宜性作出研究。从整体上分析，徐州市的农用地适宜性较高，分级在适宜及以上的占据徐州市面积的83。79%，分级在不适宜及以下的占徐州市面积的16。21%。从徐州市各县区的分级情况分析，分级为适宜及以上区域占辖区总面积在90%以上的有丰县、睢宁县、邳州市，适宜及以上分级占辖区总面积分别为98。397%、95。956%、93。315%；分级在不适宜及以下占辖区总面积比重最高的是贾汪区，这主要由于贾汪区山多造成的。从极度适宜、高度适宜、适宜、不适宜、极度不适宜这五级在徐州市的分布情况分析，极度适宜分布在邳州市，邳州市的占比为100%；高度适宜分布最多的区域是邳州市（占比37。404%）；适宜分布最多的区域为睢宁县（占比16。710%）；不适宜分级分布最广的区域是铜山区（占比40。232%）；极不适宜分级分布最广的区域是沛县（占比70。045%），这是有沛县辖区内有微山湖造成的。本次研究，是首次利用GIS软件对徐州市农用地适宜性进行研究的，对徐州市农业发展有着深远的意义。76914

毕业论文关键词：徐州市；ArcGIS；农用地；适宜性

Abstract  Selecting the landforms, ground slope, soil type, organic matter content, total nitrogen content, the groundwater table, agro-climatic zoning, distance from the ditch, phosphorus, land use pattern of the ten layers of the original raster data of Xuzhou as reginal data,this paper uses ArcGIS software,and combines  subjective methods (expert scoring method, arrange comparative law, AHP) and objective methods (principal component analysis, entropy method,  fuzzy comprehensive evaluation) to determine out weights based on the spatial analysis by superposition of Xuzhou City to agricultural land suitability。 Overall analysing,Xuzhou's agricultural land grade is in high suitability, the area that grade higher than fit occupies more than 83。79% total area of Xuzhou city。 Area grading unfit and below accountes for 16。21 percent of Xuzhou in the area。 Analyzing by the grading status of several counties of Xuzhou, counties that grade fit and over account for over 90% of total area,and they are Feng county, Suining county and Pizhou city, the amount of them are 98。397%、95。956% and 93。315% separately。Jiawang county accounts largest for the proportion of areas that grade unfit and below, which is due to it’s mountainous landscape。 Analyzing Xuzhou city’s distribution from five levels including extremely suitable, highly suitable, appropriate, inappropriate and extremely inappropriate, extremely suitable distribute to Pizhou city ,which accounts for 100%; highly suitable distribute to Pizhou city, which accounts for 37。404%; the most suitable distribution area is Suining county, which accounts for 16。710%, inappropriate level most widely distribute in Tongshan region (accounting for 40。232%); extremely inappropriate grade most widely distributed region is Peixian (accounting for 70。045%), which is caused by the exist of Weishan lake。 This is the first time GIS software applied to Xuzhou agricultural land suitability studies, which will has profound significance to the agricultural development of Xuzhou City。

Keywords:   Xuzhou City; ArcGIS; Agricultural land; Suitability

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