摘要
利用GPS定位,于2010年在柴河流域采集土样50个,对其全氮、氨氮和硝氮的含量进行测定,并应用传统统计学和地统计学方法对数据进行分析.从半方差函数分析的结果看,土壤全氮在一定范围内存在空间相关性,而土壤硝氮和氨氮的空间变异是由结构性因素和随机性因素共同作用引起的.研究揭示了柴河流域土壤全氮、氨氮、硝氮的空间变异规律及其影响因素,对实现土壤肥力评价和养分资源精准管理具有参考意义.
Fifty soil samples(GPS were used for recording sample location)were collected in agricultural lands in the Chaihe River Basin in 2010.Total soil nitrogen,ammonia nitrogen and nitrate nitrogen were measured.The data were analyzed using both traditional descriptive statistics and geostatistics.The semivariograms of geostatistics analysis indicates that total soil nitrogen is spatially correlated within a certain scope;the spatial variation in ammonia nitrogen and soil nitrate nitrogen are the result of intera...
出处
《玉溪师范学院学报》
2011年第4期18-22,共5页
Journal of Yuxi Normal University
基金
国家水体污染控制与治理科技重大专项滇池流域面源污染调查与系统控制研究及工程示范
编号:2009ZX07102-4
关键词
柴河流域
地统计学
空间变异
Chaihe River Basin
geostatistics
spatial variation
