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基于GIS和地统计学的土壤养分时空变异分析
引用本文:夏敏,赵小敏,张佳宝,朱安宁,刘友兆.基于GIS和地统计学的土壤养分时空变异分析[J].江西农业大学学报,2007,29(2):312-317.
作者姓名:夏敏  赵小敏  张佳宝  朱安宁  刘友兆
作者单位:1. 南京农业大学,公共管理学院,江苏,南京,210095
2. 江西农业大学,国土资源与环境学院,江西,南昌,330045
3. 中国科学院,南京土壤研究所,江苏,南京,210008
基金项目:江西省自然科学基金 , 江西省科技攻关项目
摘    要:运用ArcGIS的地统计学和空间分析模块,研究了封丘县20年前后土壤表层有机质、全氮、碱解氮、速效磷和速效钾5种养分的含量水平、分布以及演变趋势。研究结果表明,封丘县土壤有机质含量明显上升,氮素有所积累;磷素有升有降,以升为主;但速效钾含量急剧下降,这些变化与封丘县长期以来的肥料施用和土地利用有关。运用地理信息系统和地统计学方法能够很好地模拟土壤养分的空间分布特征,便于研究者直观地发现土壤养分时空变化趋势。

关 键 词:地统计学  ArcGIS  土壤养分  时空变化  Kriging
文章编号:1000-2286(2007)02-0312-06
收稿时间:06 19 2006 12:00AM
修稿时间:12 28 2006 12:00AM

Investigation of Temporal-spatial Variability of Soil Nutrients in Fengqiu County
XIA Min,ZHAO Xiao-min,ZHANG Jia-bao,ZHU An-ning,LIU You-zhao.Investigation of Temporal-spatial Variability of Soil Nutrients in Fengqiu County[J].Acta Agriculturae Universitis Jiangxiensis,2007,29(2):312-317.
Authors:XIA Min  ZHAO Xiao-min  ZHANG Jia-bao  ZHU An-ning  LIU You-zhao
Institution:1. College of Land Management, NAU, Nanjing 210095, China; 2. College of Land Resources and Environment, JAU, Nanchang 330045, China; 3. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
Abstract:The geostatistical analysis model and spatial analysis model of ArcGIS were applied to investigate the temporal-spatial variability of the organic matter,total nitrogen,available nitrogen,available phosphorus and available potassium in soil surface of Fengqiu County for over 20 years.The results showed that the content of soil organic matter,total nitrogen,available nitrogen,available phosphorus have gone up,but the content of available potassium has come down rapidly.These changes are related to the use of fertilizer and land.It is indicated that the distribution character and temporal-spatial variability of soil nutrients can be discovered effectively by applying geographic information system and geostatistics methods.
Keywords:geostatistics  ArcGIS  soil nutrients  temporal-spatial variability  Kriging
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