岱海每年约1/3的时间处于冰封期,形成冰、水、沉积物共存的多介质格局,为厘清营养盐在冰-水-沉积物界面迁移规律,围绕岱海冰封前(10月)和冰封期(1月、2月)三相介质(冰、水、沉积物)中氮营养盐的时空分布、源汇特征及驱动因子展开系统研究.结果表明:多介质中氮营养盐呈现显著的时空差异,冰体内总氮和氨氮浓度略微升高,2月下层冰总氮浓度较1月更高,且下层冰体浓度高于其它分层.在冰封前到冰封后期水体和沉积物中总氮和硝酸盐氮持续增长,1~2月水体中硝酸盐氮增长率达62.5%.沉积物中总氮和氨氮浓度空间分布总体呈中高东低的特点,且高于冰下水体.冰封期分离系数排序为硝酸盐氮<总氮<氨氮.冰-水界面总氮迁移以硝酸盐氮为主导,1月通量高于2月,沉积物是总氮和氨氮的“源”,而对硝酸盐氮呈“汇”作用,冰-水界面氮营养盐通量对其浓度的影响总体高于沉积物-水界面通量,冻结排盐效应和沉积物内源释放共同作用于水体营养盐动态变化.其中,冰增长率、溶解氧、盐度和水温是驱动冰封前后氮营养盐分布和迁移的关键环境因子.
Abstract
Lake Daihai remains ice-covered for approximately one-third of the year, forming a multi-media system comprising ice, water, and sediment. To clarify the migration patterns of nutrients at the ice-water-sediment interfaces, a systematic study was conducted on the spatiotemporal distribution, source-sink characteristics, and driving factors of nitrogen nutrients in the three phases (ice, water, sediment) before the freezing period (October) and during the freezing period (January, February). The results revealed significant spatiotemporal heterogeneity of nitrogen nutrients across the media. Total nitrogen (TN) and ammonium nitrogen (NH4+-N) concentrations increased slightly in the ice layer. The TN concentration in the lower ice layer was higher in February than in January, with the lower ice layer exhibiting higher concentrations compared to other layers. From pre-freezing to late freezing periods, TN and nitrate nitrogen (NO3--N) concentrations continuously increased in the water and sediment. The NO3--N concentration in the water increased by 62.5% between January and February. Spatially, TN and NH4+-N concentrations in the sediment were generally higher in the central area and lower in the eastern part, and overall exceeded those in the under-ice water. During the freezing period, the fractionation coefficients followed the order: NO3--N< TN <NH4+-N. At the ice-water interface, NO3--N dominated TN migration, with a higher flux observed in January than in February. Sediment acted as a "source" for TN and NH4+-N, but as a "sink" for NO3--N. The flux of nitrogen nutrients at the ice-water interface had a greater impact on their concentrations than the sediment-water interface flux. The dynamic changes of nutrients in the water were jointly influenced by the freezing-induced salt rejection effect and endogenous sediment release. Key environmental drivers for the distribution and migration of nitrogen nutrients before and during the freezing period included ice growth rate, dissolved oxygen, salinity, and water temperature.
关键词
岱海 /
冰封期 /
营养盐 /
交换通量 /
迁移模拟
Key words
Lake Daihai /
ice-covered period /
nutrients /
exchange flux /
migration simulation
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] Grant L, Vanderkelen I, Gudmundsson L, et al. Attribution of global lake systems change to anthropogenic forcing[J]. Nature Geoscience, 2021,14(11):849-854.
[2] Li F, Jiang X, Cui C. Thermal structure and response on local climate and hydrological changes in a reservoir with an icebound season[J]. Journal of Hydro-environment Research, 2020,31:48-61.
[3] Kalinowska K, Napiórkowska-Krzebietke A, Bogacka-Kapusta E, et al. Comparison of ice-on and ice-off abiotic and biotic parameters in three eutrophic lakes[J]. Ecological Research, 2019,34(5):687-698.
[4] Huang W, Zhang Z, Li Z, et al. Under-ice dissolved oxygen and metabolism dynamics in a shallow lake: The critical role of ice and snow[J]. Water Resources Research, 2021,57(5):e2020WR027990.
[5] Caldwell T J, Chandra S, Feher K, et al. Ecosystem response to earlier ice break-up date: Climate-driven changes to water temperature, lake-habitat-specific production, and trout habitat and resource use[J]. Global Change Biology, 2020,26(10):5475-5491.
[6] Salt D E, Pickering I J, Prince R C, et al. Metal accumulation by aquacultured seedlings of indian mustard[J]. Environmental Science & Technology, 1997,31(6):1636-1644.
[7] Pieters R, Lawrence G A. Effect of salt exclusion from lake ice on seasonal circulation[J]. Limnology and Oceanography, 2009,54(2): 401-412.
[8] 张岩,李畅游,Tao S H,等.乌梁素海湖泊冰生长过程中总氮的迁移规律[J]. 水科学进展, 2013,24(5):728-735. Zhang Y, Li C Y, Tao S H, et al. Total nitrogen migration in Wuliangsuhai Lake during ice growth process[J]. Advances in Water Science, 2013,24(5):728-735.
[9] Zhang X F, Mei X Y. Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study[J]. Water Science and Engineering, 2015,8(2):127-131.
[10] 李乾岗,田颖,刘玲,等.水体中沉积物氮和磷的释放机制及其影响因素研究进展[J]. 湿地科学, 2022,20(1):94-103. Li Q G, Tian Y, Liu L, et al. Research progress on release mechanisms of nitrogen and phosphorus of sediments in water bodies and their influencing factors[J]. Wetland Science, 2022,20(1):94-103.
[11] Prowse T D. River-ice ecology. i: hydrologic, geomorphic, and water-quality aspects[J]. Journal of Cold Regions Engineering, 2001,15(1):1-16.
[12] Callender E, Hammond D E. Nutrient exchange across the sediment-water interface in the Potomac River estuary[J]. Estuarine, Coastal and Shelf Science, 1982,15(4):395-413.
[13] 范中亚,王文才,蒋锦刚,等.华阳河湖群沉积物内源磷释放风险及控制策略[J]. 环境科学研究, 2020,33(5):1170-1178. Fan Z Y, Wang W C, Jiang J G, et al. Risk and control strategy of internal phosphorus release from sediments in Huayang Lakes[J]. Research of Environmental Sciences, 2020,33(5):1170-1178.
[14] 王洪伟,王少明,张敏,等.春季潘家口水库沉积物-水界面氮磷赋存特征及迁移通量[J]. 中国环境科学, 2021,41(9):4284-4293. Wang H W, Wang S M, Zhang M, et al. Occurrence characteristics and transport fluxes of nitrogen and phosphorus at sediment-water interface of Panjiakou Reservoir in spring[J]. China Environmental Science, 2021,41(9):4284-4293.
[15] 谭立贤,康得军,刘成,等.丘陵山区水库沉积物-水界面磷源汇转换机制[J]. 中国环境科学, 2024,44(4):2137-2147. Tan L X, Kang DJ, Liu C, et al. Mechanisms of phosphorus source-sink transformation across the sediment-water interface of a hilly and mountainous reservoir[J]. China Environmental Science, 2024,44(4):2137-2147.
[16] 朱胤泽,赵可,董向前,等.冰封期湖泊沉积物-水界面氮磷迁移及源汇特征[J]. 中国环境科学, 2023,43(7):3616-3624. Zhu Y Z, Zhao K, Dong X Q, et al. Characterizing nitrogen and phosphorus transport and source-sink interactions at the lake sediment-water interface during the freezing period[J]. China Environmental Science, 2023,43(7):3616-3624.
[17] 姜涛,张生,赵胜男,等.冰封期乌梁素海沉积物-水界面氨氮的交换特征[J]. 湖泊科学, 2019,31(1):81-87. Jiang T, Zhang S, Zhao S N, et al. Exchange characteristics of ammonia nitrogen at the water and sediment interface during the ice-sealing period in Lake Ulansuhai[J]. Journal of Lake Sciences, 2019,31(1):81-87.
[18] Yang F, Cen R, Feng W, et al. Dynamic simulation of nutrient distribution in lakes during ice cover growth and ablation[J]. Chemosphere, 2021,281:130781.
[19] Hu S, Wang T, Xu S, et al. Accumulation characteristic of nitrogen in reservoirs during the ice-covered period under superimposed influence of ice and sediments: A case study of Biliuhe reservoir[J]. Environmental Pollution, 2022,312:120025.
[20] Krogseth I S, Whelan M J, Christensen G N, et al. Understanding of cyclic volatile methyl siloxane fate in a high latitude lake is constrained by uncertainty in organic carbon-water partitioning[J]. Environmental Science & Technology, 2017,51(1):401-409.
[21] He Y, Zhang Q, Wang W, et al. The multi-media environmental behavior of heavy metals around tailings under the influence of precipitation[J]. Ecotoxicology and Environmental Safety, 2023, 266:115541.
[22] 杨文焕,张晓学,姚植,等.岱海沉积物营养盐时空分布特征及污染评价[J]. 环境科学与技术, 2022,45(9):153-159. Yang W H, Zhang X X, Yao Z, et al. Temporal and spatial distribution characteristics and pollution assessment of nutrients in sediments of Daihai Lake[J]. Environmental Science & Technology, 2022,45(9): 153-159.
[23] 李明亮,张明宇,姚植,等.寒区典型湖泊冰封期溶解氧变化趋势及影响因素[J]. 湖泊科学, 2024,36(6):1806-1820. Li M L, Zhang M Y, Yao Z, et al. The trend of dissolved oxygen change and influencing factors of typical lakes in cold area during icecoverd period[J]. Journal of Lake Sciences, 2024,36(6):1806-1820.
[24] 周靓,李维浩,石雅楠,等.船舶飞沫结冰研究综述[J]. 舰船科学技术, 2022,44(10):1-5. Zhou L, Li W H, Shi Y N, et al. Overview of foreign research on ship spray icing[J]. Ship Science and Technology, 2022,44(10):1-5.
[25] 孔祥志,李巧,陈婷,等.新疆奎屯河流域地下水中砷代谢相关微生物代谢特征及影响因素[J]. 湖泊科学, 2025,37(5):1647-1660. Kong X Z, Li Q, Chen T, et al. Metabolic characteristics and influencing factors of arsenic-metabolizing microorganisms in groundwater of the Kuytun River Basin, Xinjiang[J]. Journal of Lake Sciences, 2025,37(5):1647-1660.
[26] Timco G W, Weeks W F. A review of the engineering properties of sea ice[J]. Cold Regions Science and Technology, 2010,60(2):107-129.
[27] Henley S F, Cozzi S, Fripiat F, et al. Macronutrient biogeochemistry in Antarctic land-fast sea ice: Insights from a circumpolar data compilation[J]. Marine Chemistry, 2023,257:104324.
[28] Granskog M A, Kaartokallio H, Shirasawa K. Nutrient status of Baltic Sea ice: Evidence for control by snow-ice formation, ice permeability, and ice algae[J]. Journal of Geophysical Research: Oceans, 2003,108(C8).
[29] 高宁,乔玲敏,张岩,等.乌梁素海结冰过程中总磷的迁移过程研究[J]. 海洋湖沼通报, 2017,155(2):48-52. Gao N, Qiao L M, Zhang Y, et al. Total phosphorus migration in Wuliangsuhai Lake during ice growth process[J]. Transactions of Oceanology and Limnology, 2017,155(2):48-52.
[30] Ping X, Xian Y, Jin M. Effect of particulate organic carbon deposition on nitrate reduction in the hyporheic zone[J]. Water Resources Research, 2023,59(7):e2022WR034253.
[31] Zhou M, Butterbach-Bahl K, Vereecken H, et al. A meta-analysis of soil salinization effects on nitrogen pools, cycles and fluxes in coastal ecosystems[J]. Glob. Chang Biol., 2017,23(3):1338-1352.
[32] Giblin A E, Tobias C R, Song B, et al. The importance of dissimilatory nitrate reduction to ammonium (DNRA) in the nitrogen cycle of coastal ecosystems[J]. Oceanography, 2013,26:124-131. 作者介绍：侯晨丽(1992-),女,山西大同人,讲师,博士,主要从事水土环境污染控制与生态修复研究.发表论文10余篇.ndhcl202060030@163. com.
基金
内蒙古自治区科技计划项目(2021GG0410);内蒙古自治区直属高校基本科研业务费项目(2024YXXS028,2023QNJS133,2023CXPT005);内蒙古自然科学基金资助项目(2023QN05019)
PDF(1487 KB)
京公网安备 11010802030352号 
