| 引用本文: | 杨文焕,崔亚楠,李卫平,等.包头市南海湖冰封期营养盐和叶绿素a时空分布特征研究[J].灌溉排水学报,2018,37(3):72-77. |
| YANG Wenhuan,CUI Yanan,LI Weiping,et al.包头市南海湖冰封期营养盐和叶绿素a时空分布特征研究[J].灌溉排水学报,2018,37(3):72-77. |
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| 摘要: |
| 【目的】探究在冰封过程中营养盐及叶绿素a的空间分布以及营养盐与叶绿素a的相关关系。【方法】以包头市南海湿地中的南海湖为研究对象，分别在常温期和冰封期对南海湖内采样点的总氮、总磷、氨氮、硝态氮、亚硝态氮、溶解性总磷、溶解性正磷酸盐及叶绿素a质量浓度及相关环境因子进行测定，并进行相关性分析。【结果】 ①南海湖中营养盐在时空分布上有一定规律，时间上有明显的季节性差异，空间上存在明显的区域性差异。季节性差异主要受自然因素的影响包括光照、温度；区域性差异主要受人为活动的影响。②冰封条件下Chl. a质量浓度与DIN、DIP、TN、TP、NH4+-N、NO3--N均呈显著正相关关系（P<0.05），说明冰封条件下南海湖水体中营养盐量的高低在一定程度上影响着浮游藻类的增长。③结冰使污染物由冰向水中迁移，冬季温度低，污染物难以被降解，导致水质恶化。【结论】冰封期南海湖水体的N/P比平均值为11.38，判定水体富营养化的主控因子是P，因此在冰封期应严格控制含P污染源排入是南海湖水体富营养化的关键。 |
| 关键词: 湿地； 冰封期； 营养盐； 叶绿素a； 分布特征 |
| DOI：10.13522/j.cnki.ggps.2017.0320 |
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| Temporal and Spatial Distribution Characteristics of Nutrient and Chlorophyll A in the Ice-Capped Period of Lake Nanhai in Baotou City |
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YANG Wenhuan, CUI Yanan, LI Weiping, YU Linghong, FAN Aiping, MIAO Chunlin
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School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China; Baotou Ecological Wetland Conservation and Management Center, Baotou 014010, China;Management Office of Nanhai Wetlands Reserve in Baotou, Baotou 014040, China
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| Abstract: |
| 【Objective】 The spatial distribution and relationship of nutrient salts and chlorophyll a were studied during the icebound season in lake Nanhai, Baotou city. 【Method】 The total nitrogen, total phosphorus, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, total phosphorus solubility, soluble phosphate, chlorophyll a concentration and related environmental factors were respectively detected in sampling point under normal and frozen temperature. 【Results】 ①The nutrient salt has some regularity in the spatial and temporal distribution, the seasonal variation in time and the spatial variation in space were both obviously different. The former was mainly influenced by natural factors including light and temperature, the latter was mainly influenced by human activities. ② The concentrations of chlorophyll a was significantly positive correlated to DIN、DIP、TN、TP、NH4 +-N、NO3- -N (P<0.05) under the frozen conditions, which suggested that the growth of planktonic algae was affected by the condition of the nutrient content in the lake to a certain extent. ③Under the condition of freezing the pollutants that migrated from ice to water were difficult to be degraded, leaded to deterioration of water quality. 【Conclusion】 The N/P ratio of the water body in the ice period was 11.38, and the mained controlling factor of eutrophication was P. Therefore, P was the key to the eutrophication of the lake Nanhai. |
| Key words: wetland; ice period; nutrient; chlorophyll a; distribution characteristics |
