基于GIS的蚌埠市淮上区耕地地力等级评价  

Gradation of the Cropland Productivity in Huaishang District Bengbu City Based on GIS Technique

作　　者：查海涅 汪建飞[1] 张振国[1] 张伟[1] 吴言柱 田小塞 邹长明[1] 

机构地区：[1]安徽科技学院,安徽凤阳233100 [2]安徽省蚌埠市淮上区农业综合服务站,安徽蚌埠233020

出　　处：《土壤》2015年第5期1001-1006,共6页Soils

基　　金：农业部测土配方施肥补贴项目和安徽科技学院引进人才课题(ZRC2014397)资助

摘　　要：借助遥感解译和GPS野外采样,获得安徽省蚌埠市淮上区田块尺度的评价单元和2 642个土壤采样点。应用GIS的空间分析功能,利用DELPH法、层次分析法和模糊评价等模型,以耕地的养分状况、理化性质、地理条件、管理状况4个方面和17个影响因素为主要评价依据,建立了评价模型。采用积累曲线法确定地力等级评价界限,将淮上区2万多块评价单元划分为5个等级。一等地和二等地主要集中在曹老集镇,其中分别占一等地的96.89%,二等地的70%,三等地和五等地在梅桥乡分布较多,分别占三等地的47.08%,五等地的61.37%,而沿淮河的小蚌埠镇和吴小街镇主要是三等地和四等地。地力等级评价结果能准确反映当地耕地的状况,为淮河流域耕地地力等级评价提供依据。The evaluation units in field scale and 2 642 soil sampling sites which located in the area of Huaishang district of Bengbu, Anhui Province were obtained using remote sensing interpreting and GPS-based sampling point arrangement. In the meantime, a relatively scientific evaluation model has been established using the nutrient status of arable lands, physicochemical properties, geographical condition, management situation and other 17 factors as parameters and assisted by spatial analysis of GIS, DELPH method, AHP and fuzzy assessment. Accumulation curve method was used to determine the fertility level of the evaluation limits, the 20000 evaluation units of the upper areas were divided into 5 classes. The first and second gradations of croplands were mainly distributed in Caolaoji Town and the third and fifth gradations of croplands were distributed in Meiqiao Town. The croplands in Xiaobengbu Town and Wuxiaojie Town along Huaihe River mainly belong to the third and fourth gradation. The evaluation results of fertility level reflected accurately the status of local farmlands, which will provide the basis for the assessment of the soil fertility level of Huaihe River valley.

关 键 词：耕地地力 等级评价 GIS 淮上区 

分 类 号：S158[农业科学—土壤学]