基于GIS的县域不同作物土地综合生产力评价

根据曲周的农业生产情况，以地理信息系统为平台，通过相关性和回归分析，筛选和确定影响不同作物产量的评价指标，并对筛选的指标进行量化分级和指标权重的量化，对影响与制约土地生产力的自然因素和社会经济进行综合评价。通过土地评价及其分析得出：（1）同一因素对不同作物有不同的影响；（2）同一地块对不同作物生产力综合评价等级不尽相同；（3）按照土地适宜性、各类土地利用特点以及区位、经济因素，进行作物种植分区。

Agricultural Land Evaluation Based on the Different Crop Planting at County Level

Land evaluation was done at county level,based on Geographic Information System(GIS).With the correlation analysis and stepwise model, the indicators were screened out from biophysical factors and socioeconomical factors and their coefficients were attained for the land evaluation of different crop production.The land evaluation and the analysis of different class land present that there are different class of land unit for different crop.The land use planning of the different crop should be based on land suit,the zone bit and the socioeconomic condition.