典型山区轻度营养型水库底泥氮磷释放规律

PDF全文下载：  201801011.pdf

文章编号： 16726987（2018）01006508； DOI： 10.16351/j.16726987.2018.01.011

周骏1， 陈小兰2， 李松3， 林国庆2*， 王真真2， 闫晓云2， 庞红璐2

（1.青岛科技大学环境与安全工程学院，山东 青岛 266042；2.中国海洋大学 海洋环境与生态教育部重点实验室，

山东 青岛 266100；3.青岛市水利局，山东 青岛 266071）

摘要： 尹府水库作为山区轻度营养型水库，其流域相对独立，水库周边群山环绕，流域内以农田、果树种植为主，无工业污染，研究其富营养化变化规律，特别是其内源释放情况具有重要的科学价值。本研究采集了水库不同区域的底泥沉积物样品和对应水样，并利用室内柱状静态模拟实验对尹府水库底泥营养盐的释放规律进行了模拟研究。实验结果显示：水库不同区域营养物质的释放通量具有空间各向异性，其释放通量的最小值位于入库区域附近，最大值位于出库区域附近。通过计算可知，枯水季底泥TN、氨氮的释放量分别为493 t和281 t；而底泥作为上覆水硝态氮和TP的“汇”，枯水季的吸附量分别为284 t和13 t。与中营养化、富营养化水库相比较，底泥中的TN、氨氮和硝氮的释放规律是一致的，即TN、氨氮表现为上覆水体的内源，硝氮表现为上覆水体的“汇”。然而，底泥中总磷的释放规律明显不同：中营养化、富营养化水库的底泥向上覆水体释放磷，但轻度富营养化尹府水库的底泥吸附上覆水体的磷。实验结果可为轻度富营养型水库的水质演变提供理论依据。

关键词： 底泥沉积物； 氮； 磷； 释放通量； 尹府水库

中图分类号：  X 524文献标志码： A

引用格式：周骏， 陈小兰， 李松， 等. 典型山区轻度营养型水库底泥氮磷释放规律\[J\]. 青岛科技大学学报（自然科学版）， 2018， 39（1）： 6572.

ZHOU Jun, CHEN Xiaolan, LI Song, et al. Release mechanism of nitrogen and phosphorous form sediments of the light eutrophication reservoir in the typical mountainous area\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2018, 39(1)： 6572.

Release Mechanism of Nitrogen and Phosphorous Form Sediments of the

 Light Eutrophication Reservoir in the Typical Mountainous Area

ZHOU Jun1, CHEN Xiaolan2, LI Song3, LIN Guoqing2, WANG Zhenzhen2, YAN Xiaoyun2, PANG Honglu2

 (1.College of Environmental and Safety Engineering Qingdao University of Science and Technology，Qingdao 266042，China; 2.Key Laboratory of Marine Environment and Ecology，Ministry of Education，Ocean University of China，

Qingdao 266100，China; 3.Water Resources Bureau of Qingdao City，Qingdao 266071，China)

Abstract: Yinfu reservoir is one of light eutrophic reservoirs in mountain areas. The river basin is relatively independent，surrounded by mountains. Farmland and fruit trees were mainly cultivated without industrial pollution. It is very necessary to study the mechanism of eutrophication，especially nutrient release from sediments. In this paper，sediment samples from different regions of the reservoir and corresponding water samples were collected. Nutrient release from sediments in the Yinfu reservoir was explored through the indoor static column experiments. The experimental results showed that the release flux of nutrients in different regions of the reservoir had spatial anisotropy. The minimum value of the release flux was near the entrance of the reservoir，and the maximum value was near the outlet of the reservoir. The results of the calculation revealed that emission flux of total nitrogen and ammonium nitrogen were 493 t and 281 t respectively in dry season. The adsorption flux nitrate nitrogen and total phosphorous were 284 t and 13 t respectively in dry season. Compared with mesotrophic and eutrophic reservoirs，release rules of TN，ammonia nitrogen and nitrate nitrogen were consistent in the sediment. Namely，total nitrogen and ammonium nitrogen were the endogenesis of overlying water，while nitrate nitrogen acted as the sink of the overlying water body. However，the release of total phosphorus in sediments was significantly different. Phosphorus from the sediments of mesotrophic and eutrophic reservoirs was released to the overlying water，while the sediments adsorbed the phosphorus from the overlying water in the Yinfu reservoir with light eutrophication. The experiment results can provide a theoretical basis for evolution trend of water quality in light eutrophic reservoirs.

Key words: sediments; nitrogen; phosphorous; release flux; Yinfu reservoir

收稿日期： 20161129

基金项目： 国家自然科学基金项目（40572142）;国家科技重大专项项目（2013ZX07202007）;山东省海洋生态环境与防灾减灾重点实验室开放基金（201510）；山东省自然科学基金项目（ZR2014DL005）；青岛市科技发展计划项目（091158nsh）.

作者简介： 周骏（1982—），男，讲师.*通信联系人.