当涂县土地质量地球化学评估

根据研究区地球化学、养分丰缺等现状,选择12个评价指标,应用隶属度函数方法,对当涂县进行土地质量地球化学评价。基于安徽省江淮流域(1∶25万)多目标区域地球化学调查成果及异常查证数据,将当涂县的土地分为五等,即优质、优良、良好、中等、差等,各级土地所占的比例分别为17.92%、54.49%、20.89%、4.37%和2.33%。优质土地集中分布在沿江平原区及北部水网圩区。当涂县土地质量整体较好。

GeoChemiCAl ASSeSSment of lAnd QuAlity of dAnGtu CountyGEOCHEMICAL ASSESSMENT OF LAND QUALITY OF DANGTU COUNTY

This paper made a geochemical assessment of the quality of land in Dangtu County by using 12 assessment indexes chosen on the basis of geochemistry and nutrient abundance currently in the study area, and membership function. According to Multi-objective Regional Geochemical Survey Results and Anomaly Verification Data of the Yangtze River and Huai River Basins in Anhui Province, the land in Dangtu County is divided into five classes： superior, excellent, good, moderate and poor, taking up 17.92%, 54.49%, 20.89%, 4.37%and 2.33%, respectively. Superior land concentrates in the plain area along the Yangtze River and in the northern water system diked area. In general, the land quality is good for Dangtu County.