摘要
土壤肥力是影响作物单产的主要因素,也是耕地分级的重要依据。选择海拔、坡度、耕层厚度、pH值、有机质、全氮、速效磷、速效钾8个评价指标,用改进层次分析法确定指标权重,以模糊数学理论为基础,在ArcGIS8.3和ArcView3.3平台上,实现普安县耕地土壤肥力可视化评价,并对土壤肥力空间分布差异进行分析,为土壤培肥、治理、耕地分级和退耕还林(还草)科学决策提供依据。
The soil fertility is the important factor affecting the output of crops and important basis for classification of cultivated land. The video evaluation for soil fertility of cultivated land is realized on the Arc GIS 8.3 and Arc View 3.3 by 8 evaluation index of elevation, slope, cultivated thickness, pH, organic material, total nitrogen, active P and active K, the improved AHP, the fuzzy evaluation mathematical model. The scientific decision for the fertility improvement and management of soil, classification of cultivated land and planting grass by withdrawing from cultivation is made by analyzing the space distribution of soil fertility.
出处
《贵州农业科学》
CAS
2006年第5期15-17,共3页
Guizhou Agricultural Sciences
基金
中巴资源卫星数据质量提高与生态环境监测应用典型研究[黔科合GY(2005)3008-2]
普安县资源生态环境信息系统建设示范项目资助
