摘要
运用包括遥感(RS)、全球定位系统(GPS)和地理信息系统(GIS)在内的"3S"技术为辅助手段进行土壤养分空间变异研究,不但提高了研究效率,同时也使土壤养分空间分布的表达更为直观,取样更具代表性、合理性,分析结果更为精准可靠。选用地统计分析(Geostatistical Analyst)原理的反距离权重法(IDW)和克里金(Kriging)模型进行土壤养分空间插值,使其分析结果的公共认可性得以保证。"3S"技术与传统技术相结合的方法将会是土壤养分空间变异研究的发展趋势。
The application of 3S technology including GIS, GPS and RS in the study on spatial variability of soil nutrient, not only improve the efficiency of the study, but also contribute to the clear expression of spatial distribution of soil nutrients, the representative and rationality of sampling, accurate and reliable results. Interpolating with IDW and Kriging model based on geostatistical methods, the analysis results can be assured public acceptable. The combination of 3S technology with traditional technology will be a development trend for study on spatial variability of soil nutrient.
出处
《农业网络信息》
2009年第7期13-16,共4页
Agriculture Network Information
基金
浙江省测土配方施肥项目
关键词
空间变异
空间插值
土壤养分
3S技术
spatial variability
spatial interpolation
soil nutrient
3S technology
