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引用本文:秦丽欢,曾庆慧,李叙勇,秦耀民.北京密云水库内湖消落带有机质、营养盐(氮/磷)含量分布特征.湖泊科学,2016,28(4):794-801. DOI:10.18307/2016.0412
QIN Lihuan,ZENG Qinghui,LI Xuyong,QIN Yaomin.Distribution of organic matter and nutrient content in water-level-fluctuating zone of Miyun Reservoir inner lake, Beijing. J. Lake Sci.2016,28(4):794-801. DOI:10.18307/2016.0412
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北京密云水库内湖消落带有机质、营养盐(氮/磷)含量分布特征
秦丽欢1,2, 曾庆慧1,2, 李叙勇1, 秦耀民1
1.中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085;2.中国科学院大学, 北京 100049
摘要:
消落带是河流、湖泊和水库特有的一种现象,也是水陆生态系统间物质能量转换最活跃、最重要的区域,消落带的淹水-落干的频率和时间对消落带有机质和营养盐的形态转化与水界面的交换过程有重要影响. 在密云水库的平水期(3月),对内湖消落带有机质、氮、磷含量分布进行调查,研究不同高程、土地利用和土壤深度的情况下,有机质和各营养盐含量的分布情况及相关关系,计算有机质和各营养盐在各高程下的储量,为消落带氮磷入库风险负荷量的评估,维护密云水库的水质安全提供依据. 结果表明,密云水库内湖消落带有机质、总磷、总氮、氨氮、硝态氮、亚硝态氮和无机磷含量分别为23.15±13.65 mg/g、0.17±0.09 mg/g、1.44±0.81 mg/g、10.86±3.54 μg/g、8.07±2.73 μg/g、0.41±0.71 μg/g、9.09±4.18 μg/g;土地利用情况对总氮、氨氮和硝态氮含量影响较大,而对有机质和总磷含量分布没有显著影响;在垂直分布上,有机质、总磷和总氮含量有随土壤深度增加而降低的趋势;利用相关分析得出有机质和土壤水分是影响氮、磷转化的重要因素;133~146 m高程范围内有机质、总磷和总氮的储量分别为5324.07、59.56和414.02 t. 密云水库内湖消落带是有机质和营养盐的重要贮存库.
关键词:  消落带  有机质      密云水库  高程  土地利用  土壤深度
DOI:10.18307/2016.0412
分类号:
基金项目:中国科学院“一三五”战略发展规划重点项目(YSW2013B02-4)、城市与区域生态国家重点实验室科研专项(SKLURE2013-1-05)和国家水体污染控制与治理科技重大专项(2014ZX07203010)联合资助.
Distribution of organic matter and nutrient content in water-level-fluctuating zone of Miyun Reservoir inner lake, Beijing
QIN Lihuan1,2, ZENG Qinghui1,2, LI Xuyong1, QIN Yaomin1
1.State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, P.R.China;2.University of Chinese Academy of Sciences, Beijing 100049, P.R.China
Abstract:
Water-level-fluctuating zone (WLFZ) is a special phenomenon for rivers, lakes and reservoirs. It is also the most active and important zone for water and soil matter and energy exchange. The shifts between wet and dry period affects the nutrient transformation of WLFZ and water-soil exchange. In normal water season of Miyun Reservoir, the organic matter(OM) and nutrient content (N and P) of the water-level-fluctuating zone of inner lake was investigated,while the correlation among the soil physical chemical characteristics,OM and nutrient content was also be analyzed.Results indicated that the content of organic matter, total phosphorus, total nitrogen, ammonia nitrogen, nitrate nitrogen, inorganic phosphorus of inner lake of Miyun Reservoir was 23.15±13.65 mg/g,0.17±0.09 mg/g,1.44±0.81 mg/g,10.86±3.54 μg/g,8.07±2.73 μg/g,0.41±0.71 μg/g,9.09±4.18 μg/g, respectively; Land use had impacts on content of total nitrogen, ammonia nitrogen, nitrate nitrogen, had no impact on the content of organic matter and total phosphorus. For the vertical distribution, organic matter, total phosphorus, total nitrogen all decreased with the soil depth increase. Correlation analysis showed that water content and organic matter were important factors for nitrogen and phosphorus transform. The reserve of organic matter, total nitrogen, total phosphorus in area between 133-146 m was 5324.07, 59.56 and 414.02 t, respectively. So the water-lever-fluctuating zone was a very important OM and nutrient storage area. To keep the water quality, further studies about it were very necessary.
Key words:  Water-level-fluctuating zone  organic matter  nitrogen  phosphorus  Miyun Reservoir  altitude  land use  soil depth
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