基于GIS的黄河三角洲土壤肥力质量自动化评价  

Evaluation of Soil Quality in the Yellow River Delta Based on GIS

作　　者：刘宁[1] 李新举[1] 赵庚星[1] 于开芹[1] 马小友[1] 

机构地区：[1]山东农业大学资源与环境学院,山东泰安271018

出　　处：《土壤通报》2006年第6期1053-1057,共5页Chinese Journal of Soil Science

基　　金：由山东省教育厅青年基金"黄河三角洲土壤质量时空演变规律研究"资助(J04D03)

摘　　要：土壤盐碱加重、质量退化是黄河三角洲土地开发利用中面临的重要问题,定量客观评价土壤质量对该区土地资源合理利用与保护有重要意义。本文运用相关分析法筛选土壤质量评价指标,确定其权重,通过G IS叠加分析划分评价单元,以隶属度模型和指数和法计算土壤质量综合指标值,进而评价土壤质量。结果显示:黄河三角洲土壤总体质量较差,适宜种植业的Ⅰ、Ⅱ、Ⅲ等地仅占土地总面积的18.62%,质量最差的Ⅷ等地(光板地)占19.56%,质量中等Ⅳ、Ⅴ、Ⅵ等地占总面积56.78%;评价结果与实际作物产量高度相关。在此基础上,研究提出了该区农业生产和土地资源合理配置的措施建议。The salinization aggravation and soil quality degradation are the main problems in land exploitation and utilization in the Yellow River delta. Therefore, it is important to evaluate soil quality quantitativel in this region for sustainable land use and protection. Correlation analysis was used in this paper to select indexes and weights for soil quality evaluation and the evaluation unites was divided by GIS overlay analysis. The soil quality comprehensive indexes were calculated by the membership model and the index summation method. Our results indicated that the overall soil quality was low in the Yellow River delta. The portion of Ⅰ ,Ⅱ and Ⅲ grade of land only accounted for 18.62% of the total area; the medium Ⅳ, Vand Ⅵ grade of land accounted for 56.78% and the Ⅷ grade of land which was the worst, accounted for 19.56% of the total area. The evaluation results of soil quality are highly correlated with crop yield. Accordingly, the management for agricultural production and reasonable allocation of the land resources in the Yellow River delta were discussed and proposed.

关 键 词：黄河三角洲 土壤质量评价 相关分析 GIS 土壤肥力 

分 类 号：S158[农业科学—土壤学]