摘要
在简要介绍分形维数算法的基础上,以乌梁素海2006年5月实测资料为例,初步分析分形理论在水体营养状况评价中的适用性;将基于分形理论的评价结果与国家环境保护部推荐使用的综合营养状态指数法评价结果进行比较分析。结果表明:在对22个采样点的评价中,二者评价的一致性达到91%。两种方法的评价结果仅有两个采样点不同。从全湖的评价结果看,乌梁素海已经达到富营养重富营养水平,与已有的研究成果相一致。评价结果充分说明分形维数法可以应用于乌梁素海的富营养化评价研究,但其在其他水体的普适性尚待进一步验证。另外,分析了分形理论在水体营养状况评价研究中存在的问题和不足,并对未来的发展趋势进行展望。
Based on the fractal dimension algorithm, a case study was conducted in Wuliangsuhai Lake using data observed in May of 2006, in order to analyze the applicability of the fractal theory to eutrophication assessment. The results of assessment using the fractal theory were compared with those using the overall trophic state index, which was recommended by the Ministry of Environmental Protection of the People＇ s Republic of China （MEP）. The results from 22 sampling sites show that the two methods have an agreement of 91%. There are only two sampling sites that have different results. From the assessment results of the whole lake, it can be found that the lake has been in a eutrophic to severely eutrophic status, which is consistent with other results of evaluation conducted in the lake. It can be concluded that the fractal dimension algorithm is applicable to the evaluation of the eutrophic status of Wuliangsubai Lake. However, the applicability of the algorithm to other water bodies should be further verified. In addition, the disadvantages of the fractal theory used for eutrotrophication assessment are analyzed, and its future development is discussed.
出处
《水资源保护》
CAS
2012年第4期12-16,共5页
Water Resources Protection
基金
国家水体污染控制与治理科技重大专项(2008ZX07526-001)
关键词
分形理论
富营养化评价
分形维数
综合营养状态指数
fractal theory
eutrophication assessment
fractal dimension
overall trophic state index
