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在GIS技术的支持下,利用地统计学方法分析了松嫩平原中西部湖泊底泥营养盐的空间变异特征,并利用Kriging插值方法绘制了研究区营养元素的空间分布图。研究结果表明,通过块金值与基台值的比值C0/(C0+C1)可以得出总有机碳TOC具有较弱的空间相关性,总磷TP和全氮TN具有中等的空间相关性;Kriging插值表明,松嫩平原中西部地区的湖泊底泥营养盐分布格局是西南地区低于北部地区,北部地区的各项指标均超过全区的平均水平。
Abstract：Geostatistics is useful for characterizing and mapping spatial variability of nutrients.The geostatistics method combined with geographic information system(GIS) was applied to the spatial variability of nutrients in lake sediments in mid-west of Songnen Plain.The results indicated that the ratio of nugget to sill was 0.765 for total organic carbon(TOC),it showed that TOC had faintish spatial correlation.And the ratio of nugget to sill was 0.518 and 0.582 respectively of total phosphorus(TP) and total nitrogen(TN),it showed that TP and TN had moderate spatial correlation.The Kriging interpolation demonstrated that the distribution pattern of nutrients in lake sediments was the southwest region is below the north in mid-west of Songnen Plain,however the northern figures are above the average levels of the whole region.
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基本信息:
中图分类号:X524
引用信息:
[1]王俊杰,朱德清,臧淑英.松嫩平原中西部湖泊底泥营养盐的空间变异特征[J].地理与地理信息科学,2011,27(02):92-95+113.
基金信息:
国家自然科学基金重点项目(41030743);; 教育部博士点基金项目(20092329110001);; 黑龙江省教育厅科学技术研究项目(11553015);; 黑龙江省高等学校科技创新团队建设计划项目
2011-03-15
2011-03-15