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Position: Home > Articles > Experiment Research on Spatial Variability of Agricultural Non-point Source Pollution in Huaibei Plain Journal of Anhui Agricultural Sciences 2007,35 (30) 113-115

淮北平原区农业面源污染的空间变异性实验分析研究

作  者:
李丹;薛联青;郝振纯;王振龙
单  位:
河海大学水文水资源与水利工程科学国家重点实验室
关键词:
农业面源污染;空间变异性;ArcGIS;地统计学;淮北平原
摘  要:
针对农业面源污染分布的空间变异性特点,基于野外实验采集的农田氮、磷等指标数据,采用ArcGIS与地统计学相结合的研究方法分析了旱地耕层土壤的含水量、硝氮、全氮、速效磷、全磷的空间变异特性。通过实验研究并利用地统计学Kriging模型模拟分析各指标的空间分布特性,5项指标中速效磷的变异性最大,这与其移动性差造成的空间分布不均有很大关系;硝氮与全氮相关性较大;而速效磷与全磷的相关性较大。同时,硝氮与全氮、速效磷与全磷在同一水文气象条件下具有相似的空间分布趋势。实验模拟结果对于农业面源污染野外优化采样和进行相关信息的插补外延具有重要的实际参考价值。
译  名:
Experiment Research on Spatial Variability of Agricultural Non-point Source Pollution in Huaibei Plain
作  者:
LI Dan et al(Hohai University,State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing,Jiangsu 210098)
关键词:
Agricultural non-point source pollution;Spatial variability;ArcGIS;Geostatistics;Huaibei Plain
摘  要:
To research the spatial variability of non-point source pollution,the ArcGIS-geostatistics integrated method was adopted to analyze some indexes based on the field experiment,including soil content,nitrate nitrogen,total nitrogen,available phosphorus and total phosphorus.It was found that,of these five indexes,the spatial distribution of available phosphorus was the most variable,which was related to its difficult movement.According to correlation analysis,there was high correlation between nitrate nitrogen and total nitrogen while available phosphorus and total phosphorus.The spatial distributions of each index were gained by Kriging model,which showed a consistency to the correlation analysis result.These conclusions were of practical significance for field sampling optimization and interpolation or extrapolation of related information.

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