【摘要】 在G IS支持下,利用土壤图、土地利用现状图叠置划分法确定评价单元,选取土壤养分状况、理化性状、剖面性状、立地条件、土壤管理等5个方面13个影响因子,建立耕地地力评价体系及其模型。以鄂州市为研究试区,采取专家打分和特尔斐法确定各影响因子的隶属函数,运用层次分析法和模糊数学方法对耕地地力进行综合评价,并就其空间分布进行了分析。结果表明,在该市40892.4 hm2耕地中,一至六等地分别占耕地的3.39%、19.18%、39.21%、31.08%、6.32%、0.82%,这一评价结果符合当地实际。该研究结果不仅直接应用于试区农业生产,而且为我国华中丘陵区开展耕地地力评价在方法上进行了有益探索。更多还原

【Abstract】 Based on the geographic information system(GIS),using soil distribution map and introducing overlap method of land utilization map,this research decided evaluation unit and selected thirteen affected factors from five aspects as soil nutrient content,physico-chemistry condition,profile situation, land growing situation and land management,and the evaluation system and model of farmland fertility was built up.It adopts the scores which are made by experts and the Tell Fay method to identify the subjection function of several affected factors and introduces Analytical Hierarch program(AHP) and Fuzzy Mathematics Theory(FMT) to synthetically evaluate the farmland fertility of Ezhou city and also analyses its space distribution.The results suggest that 40892.4 hm~2 farmlands,the fertility of the grade first to sixth account for 3.39%,19.18%,39.24%,31.08%,6.32% and 0.82%,which are in line with the local situation of the city.This result can not only be applied to Ezhou(agricultural) production, but also contribute a beneficial exploration for carrying out studies about the evaluation of the farmland fertility of hilly regions of central China as well.更多还原