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    曾思益, 陈杰, 蒋昌波, 何飞, 隆院男, 屈科, 邓斌, 伍志元. 基于根茎叶定量概化模型的植被区沿程波高衰减机制试验研究[J]. 北京林业大学学报, 2020, 42(10): 117-125. DOI: 10.12171/j.1000-1522.20180110
    引用本文: 曾思益, 陈杰, 蒋昌波, 何飞, 隆院男, 屈科, 邓斌, 伍志元. 基于根茎叶定量概化模型的植被区沿程波高衰减机制试验研究[J]. 北京林业大学学报, 2020, 42(10): 117-125. DOI: 10.12171/j.1000-1522.20180110
    Zeng Siyi, Chen Jie, Jiang Changbo, He Fei, Long Yuannan, Qu Ke, Deng Bin, Wu Zhiyuan. Experimental investigation on wave decay through vegetation patch with the quantitative generalized model of root, stem and leaf[J]. Journal of Beijing Forestry University, 2020, 42(10): 117-125. DOI: 10.12171/j.1000-1522.20180110
    Citation: Zeng Siyi, Chen Jie, Jiang Changbo, He Fei, Long Yuannan, Qu Ke, Deng Bin, Wu Zhiyuan. Experimental investigation on wave decay through vegetation patch with the quantitative generalized model of root, stem and leaf[J]. Journal of Beijing Forestry University, 2020, 42(10): 117-125. DOI: 10.12171/j.1000-1522.20180110

    基于根茎叶定量概化模型的植被区沿程波高衰减机制试验研究

    Experimental investigation on wave decay through vegetation patch with the quantitative generalized model of root, stem and leaf

    • 摘要:
        目的  红树林作为一种新型生态式的护岸工具,其消波效应已成为海岸工程研究热点。本文对红树林根、茎、叶不同组成部分进行定量研究,进一步探究红树林对波浪的消减效应。
        方法  采取定量概化的根茎叶植物模型,通过波浪水槽试验探究了红树林植被区沿程波高衰减机制。将Kobayashi等提出的理论模型计算所得的植被区沿程波高理论值与试验值进行对比。
        结果  研究发现,由Kobayashi等提出的理论模型计算所得的试验波高衰减系数的范围分别为0.02 ~ 0.47。当入射波波长与植被区沿流向长度之比趋于1时,消波强度最弱。同时波浪在植被区衰减过程中出现了边界效应及波浪跃增现象,波高增量比的范围为0 ~ 13%。当波长与植被区沿流向长度之比在1.0 ~ 1.2之间,且淹没度等于1.0时,跃增高度随叶的分布密度的减小而增大,随根的分布密度的减小而减小。而当淹没度等于0.8时,减小根或叶的分布密度,跃增高度均减小。
        结论  根和叶的分布密度、淹没度以及波长与植被区沿流向长度之比均会对植被区沿程波高衰减规律产生不同程度的影响。

       

      Abstract:
        Objective  Mangrove forest has become a research focus due to its functions as a newly ecological protector of shorelines. In order to quantify research the root, stem and leaf of mangrove forest, this study aims to experimentally investigate wave height decay along the quantitative generalized vegetation patch with root, stem and leaf.
        Method  The wave height calculated by the formula of Kobayashi was compared with experimental data.
        Result  The results showed that wave damping factors ranged from 0.02 to 0.47. The wave attenuation was lowest as the wave length of incident waves was equal to the length of the vegetation patch. And the boundary effect and wave height increment were observed as wave propagating over the vegetation patch. The relative wave height increment varied from 0 to 13%. When the submergence ratio ranged between 1.0 and 1.2, lower arrangement densities of leaves and roots resulted in higher and lower wave height increment, respectively. Additionally, the relative wave height increment was decreasing with a decreasing arrangement density of roots or leaves when submergence ratio equaled to 0.8.
        Conclusion  The variation of wave height along the vegetation patch appears to depending on arrangement density, submergence ratio and wave length to the length of vegetation patch.

       

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