水资源与水工程学报2012，Vol.23Issue(6)：116-119,4.
空间插值方法在锦州湾海水富营养化评价中的应用
Application of spatial interpolation method to sea water eutrophication evaluation in Jinzhou bay
摘要
Abstract
The sea water eutrophication evaluation as carried out by combining spatial interpolation and nutrition index equation. Three different methods of spatial interpolation such as inverse distance weight, radial basis function, and ordinary kriging methodand and relevant key parameters were compared, using the data of chemical oxygen demand, dissolved inorganic nitrogen and phosphorus of the Jinzhou bay, in August 2009. At the same time, the accuracy of interpolation was verified by cross-validation and the best interpolation method was decided. The results showed that (1) the accuracy of the RBF-TPS is the lowest, while the else have no significant difference. (2) But from the equivalent effect of interpolation surface contours maps, OK method performs better here. At last, OK-EXP method was selected to evaluate eutrophication status, and the result showed that 2-4 percent of the investigate area had met the eutrophication level, which the E index exceeded one, Also, the interpolation map could reflect the situation of the eutrophication status correctly and intuitively compared with the traditional eutrophication evaluation method. Thus, it provided a guideline for the practical application of the sea water quality evaluation.关键词
空间插值/海水富营养化/克里金插值法/锦州湾Key words
spatial interpolation/ eutrophication of sea water/ Kriging method/ Jinzhou bay分类
资源环境引用本文复制引用
吴翠晴,李楠,王亚涛,马启敏..空间插值方法在锦州湾海水富营养化评价中的应用[J].水资源与水工程学报,2012,23(6):116-119,4.基金项目
国家908专项"我国近海海洋综合调查与评价"专项:锦州湾海域调查与研究(908-02-02-03) （908-02-02-03）
