解璐萌, 查玟琦, 车纯广, 等. 黄河三角洲盐沼湿地螃蟹洞穴形态结构对土壤水盐运移过程的影响[J]. 生态与农村环境学报, 2024, 40(6): 831-839. DOI: 10.19741/j.issn.1673-4831.2023.0938
    引用本文: 解璐萌, 查玟琦, 车纯广, 等. 黄河三角洲盐沼湿地螃蟹洞穴形态结构对土壤水盐运移过程的影响[J]. 生态与农村环境学报, 2024, 40(6): 831-839. DOI: 10.19741/j.issn.1673-4831.2023.0938
    XIE Lu-meng, ZHA Wen-qi, CHE Chun-guang, et al. Influence of Crab Burrow Morphology on Soil Water and Salt Transport Processes in Salt Marsh Wetlands of the Yellow River Delta[J]. Journal of Ecology and Rural Environment, 2024, 40(6): 831-839. DOI: 10.19741/j.issn.1673-4831.2023.0938
    Citation: XIE Lu-meng, ZHA Wen-qi, CHE Chun-guang, et al. Influence of Crab Burrow Morphology on Soil Water and Salt Transport Processes in Salt Marsh Wetlands of the Yellow River Delta[J]. Journal of Ecology and Rural Environment, 2024, 40(6): 831-839. DOI: 10.19741/j.issn.1673-4831.2023.0938

    黄河三角洲盐沼湿地螃蟹洞穴形态结构对土壤水盐运移过程的影响

    Influence of Crab Burrow Morphology on Soil Water and Salt Transport Processes in Salt Marsh Wetlands of the Yellow River Delta

    • 摘要: 明晰潮汐驱动下螃蟹洞穴对盐沼湿地水盐运移过程的扰动效应,对基于生态过程的黄河三角洲盐沼湿地保护与修复具有重要的理论及现实意义。研究结合野外调查和室内水槽模拟实验,探究潮间带螃蟹洞穴形态与分布特征,分析了潮汐作用下不同螃蟹洞穴形态对水盐运移过程的影响。结果表明:(1)潮汐影响下,黄河三角洲潮间带螃蟹洞穴空间分布密度有差异,3条潮沟洞穴密度分别为(15.50±4.65)、(12.90±2.69)和(6.60±2.76)个·(0.25 m2)-1;(2)对螃蟹洞穴树脂模型进行简化归类,发现其主要形态结构为I型、L型、S型、X型、Y型,以上5种形态在获得的42个螃蟹洞穴中占比高达85.7%;(3)不同螃蟹洞穴形态在潮汐作用下土壤含水量变化趋势没有明显差异,而电导率随高潮与低潮呈现不同的升高与降低过程;(4)潮汐影响下,空白实验组潮汐水入渗量、孔隙水排泄量均显著低于有螃蟹洞穴的实验组,孔隙水排泄主要集中在水位下降时段,而L型洞穴因具有一定的储水能力,使更多的孔隙水在稳定时段排泄。(5)不同螃蟹洞穴形态对土壤盐排泄量有显著影响,S2、X和I组盐排泄量最高,空白组最低,仅为(0.403±0.003) g·d-1。研究结果从水文学角度揭示了螃蟹洞穴的生态功能,将为后续的滨海湿地生态水文过程研究提供参考。

       

      Abstract: Examining the influence of crab burrows on water and salt transport processes under tidal conditions holds substantial theoretical and practical significance for the preservation and rehabilitation of salt marsh wetlands based on ecological processes in the Yellow River Delta. This study employed both field research and indoor experiments to investigate the morphology and distribution patterns of crab burrows in the intertidal zone. Moreover, the study aimed to assess the impact of crab burrow morphology on water-salt transportation under tidal action. The results show that: (1) The density of crab burrows in three tidal creeks varied under the influence of tides, with respective values of (15.50±4.65), (12.90±2.69) and (6.60±2.76) per 0.25 m2. (2) By simplifying and categorizing the resin model of the crab burrows, five main morphologies I-type, L-type, S-type, X-type, and Y-type accounted for 85.7% of the 42 crab burrows collected. (3) Although no significant difference was observed in the trend of soil water content change for different crab burrow morphologies, soil conductivity exhibited varying increase and decrease processes during high and low tides. (4) Under the influence of tides, the quantity of tidal water infiltration and pore water discharge in the control experimental group was markedly lower than that in the experimental group with crab burrows. Notably, L-shaped burrows facilitated increased pore water discharge during the stable period due to their water storage capability. (5) Different crab burrow morphologies significantly impacted soil salt excretion, with the highest amount of salt excretion occurring in groups S2, X and I, and the lowest in the blank group which only excreted (0.403±0.003) g·d-1. These results underscore the eco-hydrological importance of crab burrows and provide valuable insights for future studies on eco-hydrological processes in coastal wetlands.

       

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