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应用生态学报 ›› 2020, Vol. 31 ›› Issue (4): 1333-1340.doi: 10.13287/j.1001-9332.202004.039

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黄河三角洲滨岸潮滩湿地碱蓬对水沙条件及氮输入的适应性

宋红丽1*, 韩洪军2, 郁万妮1, 王立志1   

  1. 1山东省水土保持与环境保育重点实验室/临沂大学资源环境学院, 山东临沂 276005;
    2沂水县水利局, 山东临沂 276400
  • 收稿日期:2019-09-04 出版日期:2020-04-20 发布日期:2020-04-20
  • 通讯作者: *E-mail: songhongli@lyu.edu.cn
  • 作者简介:宋红丽, 女, 1986年生, 副教授。主要从事湿地生态学研究。E-mail: songhongli@lyu.edu.cn
  • 基金资助:
    国家自然科学基金项目(41601086, 21806069)和山东省自然科学项目(ZR2018LD004)资助

Adaptation of Suaeda salsa to water/sediment conditions and nitrogen input in tidal flat wetlands in the Yellow River Delta, China

SONG Hong-li1*, HAN Hong-jun2, YU Wan-ni1, WANG Li-zhi1   

  1. 1Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection/College of Resources and Environment, Linyi University, Linyi 276005, Shandong, China;
    2Yishui Water Conservancy Bureau, Linyi 276400, Shandong, China.
  • Received:2019-09-04 Online:2020-04-20 Published:2020-04-20
  • Contact: *E-mail: songhongli@lyu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (41601086, 21806069) and Natural Science Foundation of Shandong Province (ZR2018LD004).

摘要: 调水调沙工程的实施为黄河三角洲带来大量淡水恢复退化湿地的同时,也改变了湿地的水沙状况并带来大量的外源物质。本研究采用3因素4水平的正交试验,以黄河口滨岸潮滩湿地典型的先锋物种碱蓬为研究对象,探讨了其对淹水深度、泥沙埋深及外源氮输入的适应机制。结果表明: 泥沙埋深对碱蓬叶片蛋白含量及超氧化物歧化酶(SOD)活性的影响较大;氮输入对过氧化物酶(POD)活性的影响较大,而3种处理对过氧化氢酶(CAT)活性的影响无显著差异。淹水深度对叶、茎及总干重具有显著影响,且随淹水深度的增加呈现减小趋势,最大值(25.70、40.86、69.73 g)均出现在2 cm淹水处理;而氮输入及泥沙埋深对碱蓬干重的影响不显著。极差分析表明,淹水深度对碱蓬叶、茎、根及总干重的影响最为显著,其次为氮输入和泥沙埋深,2 cm淹水深度+12 cm埋深深度+9 g·m-2氮输入量最有利于碱蓬的生长。可见,淹水深度的变化对碱蓬的生长起到决定性的作用,在调水调沙等工程的实施过程中应注重淹水深度的把控。

Abstract: The application of Water-Sediment Regulation Project provides abundant freshwater for the Yellow River Delta, changes water and sediment condition, as well as brings lots of exogenous substances. Using orthogonal test with three factors and four levels, we examined the effects of water condition, sediment burial depth and exogenous nitrogen input on the growth of wetland plant, Suaeda salsa. The results showed that sediment burial had great effect on protein content and SOD activity. Nitrogen input had great effect on POD activity. CAT activity was not affected by sediment burial, nitrogen input and water depth. The water depth manipulation had significant effect on leaf, stem and total dry weight. With the increases of water depth, leaf, stem and total dry weight showed a decreasing trend, with the maximum values (25.70, 40.86, 69.73 g) at the 2 cm water depth. There was no effect of nitrogen input and sediment burial on dry weight. The results of range analysis showed that the effect of water depth on leaf, stem, root and total dry weight was great, and followed by nitrogen input and sediment burial, with an optimal combination of 2 cm water depth +12 cm sediment burial + 9 g·m-2 nitrogen input. These findings suggested that water condition played a decisive role in affecting the growth of S. salsa. Consequently, more attention should be paid to the control of water depth in the process of water and sediment regulation.