...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Scaling relations and substrate conditions controlling the complexity of Rhizophora prop root system
【24h】

Scaling relations and substrate conditions controlling the complexity of Rhizophora prop root system

机译：缩放关系和基质条件控制rozophora道具根系的复杂性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The complex structures of the prop root system of the mangrove genus Rhizophora attenuate storm surges and tsunamis and promote sedimentation. While quantification of the mangrove's drag force is essential for assessing the mangroves' ability to reduce the risk of disaster and vulnerability to rising sea-level, the projected area of prop root system having multiple orders of prop roots (e.g., first-, second-, and third-order prop roots, where the root order indicates the level of branching from the stem) are still unexplored. To contribute to the quantitative evaluation of the mangrove's drag force, we investigated the vertical profile of whole-tree prop root projected area and the number of prop roots of 156 trees sampled from Indonesia, the Philippines, and Japan. Our results showed that prop roots above the first-order contribute up to 80% of the whole-tree prop root projected area, highlighting the importance of the presence of second-, third-, and even higher-order prop roots on the drag force exerted by mangroves. Based on field data, an empirical model for the prop root system, described by a scaling factor (S), and maximum and minimum root heights (HRmax, HRmin), was developed by assuming that the size distribution of prop roots follows a constant scaling factor S. S and HRmax showed significant correlations with stem diameter at breast height suggesting the scaling relations in the prop root system. The model, which employs the site- and species-specific regression models for S and HRmax, reproduced the vertical distribution of the number of prop roots – a good predictor of the prop root projected area – with reasonable accuracy. However, the site- and species-specific scaling relations are highly variable depending on the environment, suggesting morphological plasticity in the prop root system. Rhizophora trees that grow on a shallow sediment layer (around 0.1 m thickness) tend to produce more prop roots compared with those on a thicker sediment layer suggesting a morphological response of the prop root system to increase below-ground root biomass where below-ground root development is physically constrained. Multivariate analysis indicated that hard substrate also possibly contributes to higher complexity of prop root system. However, prediction of the site- and species-specific scaling relations from these environmental variables still needs to be improved. Further research is needed to explain the mechanisms of morphological response of prop root systems to environmental gradients and to establish a generalized model for predicting the prop root system in various environments.
机译：红树林rhizophora的句子根系的复杂结构衰减风暴潮和海啸，促进沉降。虽然红树林的拖延力量的量化对于评估红树林来降低灾害和脆弱性对海平面上升的危险的能力至关重要，但具有多个支柱根源的道具根系系统的预计区域（例如，首先，第二 - ，以及三阶支出根源，其中根顺序表示从茎的分支的水平仍然是未探究的。为了促进红树林拖力的定量评估，我们调查了全树道具预计区域的垂直曲线，以及从印度尼西亚，菲律宾和日本采样的156棵树的道具根数。我们的研究结果表明，一流之上的支柱根部有贡献全年道路的80％，突出了在拖曳力上存在第二次，第三，甚至高级支出根源的重要性由红树林施加。基于现场数据，通过假设支柱根的尺寸分布遵循恒定缩放，通过缩放因子（S）和最大和最小根高度（HRMAX，HRMIN）来制定的基础数据的实证模型是开发的因子S.S和HRMAX显示出与乳房高度的茎直径相关的显着相关性，暗示道具根系中的缩放关系。该模型采用了S和HRMAX的网站和物种特定的回归模型，再现了支柱数量的垂直分布 - 道具投影区域的良好预测因子 - 具有合理的准确性。然而，根据环境，旨在根据环境的形态可塑性，该网站和物种特异性缩放关系是高度变化的。与厚度沉积物层上的那些相比，倾向于产生更多的支撑粒树（厚度为0.1米）的根茎树，这表明道具根系的形态反应增加了地下根的地下根生物量发展是物理限制。多变量分析表明，硬质基材也可能有助于良好的道具根系系统复杂性。然而，需要改善来自这些环境变量的站点和物种特异性缩放关系的预测仍然需要得到改善。需要进一步的研究来解释支撑根系系统对环境梯度的形态反应的机制，并建立在各种环境中预测道具根系系统的广义模型。

著录项

  • 来源
    《Estuarine Coastal and Shelf Science》 |2021年第5期|107014.1-107014.14|共14页
  • 作者

    Yoshikai M.; Nakamura T.; Okamoto T.; Nadaoka K.; Suwa R.; Argamosa R.; Blanco A.C.; Rollon R.; Basina R.; Primavera-Tirol Y.H.; Adi N.S.;

  • 作者单位

    School of Environment and Society Tokyo Institute of Technology O-okayama 2-12-1 W8-13 Meguro Tokyo 152-8552 Japan;

    School of Environment and Society Tokyo Institute of Technology O-okayama 2-12-1 W8-13 Meguro Tokyo 152-8552 Japan;

    Forestry Division Japan International Research Center for Agricultural Sciences (JIRCAS) 1-1 Ohwashi Tsukuba Ibaraki 305-8686 Japan;

    Department of Geodetic Engineering College of Engineering University of the Philippines Diliman Quezon City 1101 Philippines;

    School of Environment and Society Tokyo Institute of Technology O-okayama 2-12-1 W8-13 Meguro Tokyo 152-8552 Japan;

    Institute of Environmental Science & Meteorology College of Science University of the Philippines Diliman Quezon City 1101 Philippines;

    Colledge of Fisheries and Marine Sciences Aklan State University New Washington Aklan Philippines;

    Colledge of Fisheries and Marine Sciences Aklan State University New Washington Aklan Philippines;

    Department of Geodetic Engineering College of Engineering University of the Philippines Diliman Quezon City 1101 Philippines;

    Center for Marine Research Ministry of Marine Affairs and Fisheries Jalan Pasir Putih Ancol Timur Jakarta 14430 Indonesia;

    School of Environment and Society Tokyo Institute of Technology O-okayama 2-12-1 W8-13 Meguro Tokyo 152-8552 Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Allometry; Drag; Mangrove; Morphological plasticity; Prop roots;

    机译：allometry;拖动;红树林;形态可塑性;支柱根;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号