| 引用本文: | 孔杰,周忠发,但雨生,等.基于分形插值模型的平寨水库水体富营养化评价[J].灌溉排水学报,0,():-. |
| KONG Jie,ZHOU Zhong-fa,DAN Yu-sheng,et al.基于分形插值模型的平寨水库水体富营养化评价[J].灌溉排水学报,0,():-. |
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| 基于分形插值模型的平寨水库水体富营养化评价 |
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孔杰, 周忠发, 但雨生, 蒋翼, 李韶慧
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贵州师范大学地理与环境科学学院/喀斯特研究院
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| 摘要: |
| 【目的】平寨水库地处贵州喀斯特高原,是贵州省重要的灌溉、饮用水源地之一,了解平寨水库水体富营养化状况具有重要的现实意义。【方法】采集2018年11月(秋)、2019年1月(冬)、5月(春)和7月(夏)四个季节的水样,选取叶绿素a(Chla)、总磷(TP)、总氮(TN)、高锰酸盐指数(CODMn)和透明度(SD)五个指标,利用分形维数权重的方法建立富营养化评价插值模型,对平寨水库的水体富营养化进行评价。【结果】(1)平寨水库TP和CODMn含量达到Ⅱ类水质标准,TN含量超出Ⅴ类水质标准,是主要污染因子。TN、CODMn和Chla含量在夏季最高,TP含量在冬季最高,SD在春季最低。(2)平寨水库总体上呈现中富营养、富营养状态,所有监测断面没有出现贫营养和贫中营养,说明该水库水体富营养化程度较高。(3)平寨水库夏季富营养化程度最高,冬春两季次之,秋季最低。BS2和HJ2监测断面富营养化程度最高,NY3、SG3和PZ4监测断面次之,ZW8和SG1监测断面最低。【结论】平寨水库富营养化程度偏高,TN是主要污染因子,控制氮元素的输入和富集是防治平寨水库富营养化的重中之重,研究结果为平寨水库生态环境保护提供了依据。 |
| 关键词: 分形插值模型;水体富营养化;综合评价;喀斯特高原;平寨水库 |
| DOI： |
| 分类号:X52;X824 |
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| Eutrophication evaluation of Pingzhai Reservoir based on fractal interpolation model |
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KONG Jie, ZHOU Zhong-fa, DAN Yu-sheng, JIANG Yi, LI Shao-hui
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College of Geography And Environmental Sciences / Karst Research Institute,Guizhou Normal University,Guiyang
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| Abstract: |
| 【Objective】Pingzhai Reservoir is located in the karst plateau of Guizhou, and is one of the important sources of irrigation and drinking water in Guizhou Province. Understanding the eutrophication status of the water body of Pingzhai Reservoir has important practical significance.【Method】collect water samples from November, 2018 (autumn), January 2019 (winter), May (spring) and July (summer), and select Chlorophyll a (Chla) , total phosphorus (TP), total nitrogen (TN), permanganate index (CODMn) and transparency (SD), using fractal dimension weights to establish an eutrophication evaluation interpolation model for Pingzhai Reservoir The eutrophication of water bodies was evaluated.【results】(1) The contents of TP and CODMn in Pingzhai Reservoir meets the Class II water quality standard, and the TN content exceeds the class V water quality standard, which is the main pollution factor. The contents of TN, CODMn and Chla were highest in summer, TP was highest in winter, and SD was lowest in spring. (2) in general, Pingzhai reservoir is in the state of medium eutrophication and eutrophication, All the monitoring sections have no oligotrophic and poor nutrition, indicating that the reservoir has a higher degree of eutrophication. (3) Pingzhai Reservoir has the highest degree of eutrophication in summer, followed by winter and spring, and lowest in autumn. The eutrophication degree of BS2 and HJ2 monitoring sections was the highest, and the monitoring sections of NY3, SG3 and PZ4 were the second, and the monitoring sections of ZW8 and SG1 were the lowest.【Conclusion】The degree of eutrophication of the Pingzhai Reservoir is high. TN is the main pollution factor. Controlling the input and enrichment of nitrogen is the top priority for preventing eutrophication of the Pingzhai Reservoir. The research results provide a basis for the ecological environmental protection of Pingzhai Reservoir. |
| Key words: fractal interpolation model; water eutrophication; comprehensive evaluation; karst plateau; Pingzhai Reservoir |
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