摘要
本文以高邮市为评价区，建立了GIS支持下的基本农田信息系统，对拥有的资料进行系统的动态的管理；应用相关分析、因子分析、模糊评价、层次分析等数学分析原理，选择评价要素、构造层次结构、建立单因素评价模型以及计算单因素的权重，建立了一种定性与定量相结合的耕地地力等级评价的方法。评价结果表明：利用计算机技术可以完全依据耕地自然要素评价地力，由此获得的评价结果既克服了凭经验确定分级指数主观方法的弊端，又避免了纯数学方法带有较大盲目性的弱点，能更准确地反映耕地的地力等级差异。
The basic farmland information system (BAS) supported by geographic information system (GIS) was established, which could manage the data systematically and dynamically. With the BFIS, a method in both quantitative and qualitative natures was developed to grade the farmland productive capacity. Evaluation factors were chosen, a hierarchic structure was constructed, single-factor evaluation models were built and the weight for each factor was calculated through correlation analysis, factor analysis, fuzzy evaluation, and hierarchic analysis respectively. The evaluation results indicated that the land productivity grade could be completely evaluated by the natural factors of farmland today with the quick development of computer technique. The results, tested on the farmland of Gaoyou city, was shown to be more objective and more accurate, avoiding the defects of subjectivity just by the empirical methods and the blindness of pure mathematical methods.
出处
《土壤学报》
CAS
CSCD
北大核心
1999年第4期510-521,共12页
Acta Pedologica Sinica
关键词
基本农田
信息系统
地力等级
高邮市
耕地
Basic farmland, Information system, Land productivity grade,Evaluation, Gaoyou city
