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首页> 外文期刊>Annual review of marine science >Mangrove Sedimentation and Response to Relative Sea-Level Rise
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Mangrove Sedimentation and Response to Relative Sea-Level Rise

机译：红树林沉积和对相对海平面升起的反应

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摘要

Mangroves occur on upper intertidal shorelines in the tropics and subtropics. Complex hydrodynamic and salinity conditions, related primarily to elevation and hydroperiod, influence mangrove distributions; this review considers how these distributions change over time. Accumulation rates of allochthonous and autochthonous sediment, both inorganic and organic, vary between and within different settings. Abundant terrigenous sediment can form dynamic mudbanks, and tides redistribute sediment, contrasting with mangrove peat in sediment-starved carbonate settings. Sediments underlying mangroves sequester carbon but also contain paleoenvironmental records of adjustments to past sea-level changes. Radiometric dating indicates long-term sedimentation, whereas measurements made using surface elevation tables and marker horizons provide shorter perspectives, indicating shallow subsurface processes of root growth and substrate autocompaction. Many tropical deltas also experience deep subsidence, which augments relative sea-level rise. The persistence of mangroves implies an ability to cope with moderately high rates of relative sea-level rise. However, many human pressures threaten mangroves, resulting in a continuing decline in their extent throughout the tropics.*
机译：红树林发生在热带和副数据的上层跨境映射上。复杂的流体动力学和盐度条件，主要与升高和氢联能有关，影响红树林分布;此述评考虑如何随着时间的推移而变化。同学和自加密沉积物的累积率，无机和有机物，不同的环境之间变化。丰富的沉积物可以形成动态泥浆，并潮汐重新分配沉积物，与沉积物饥饿碳酸盐泥浆中的红树林泥炭形成对比。沉积物底层红树林螯合碳，但也含有对过去的海平面变化的古环境的调整记录。辐射测定表示长期沉降，而使用表面仰卧表和标记视野的测量提供更短的视角，指示根生长和衬底自动化的浅层地下过程。许多热带德雷塔斯也经历了深沉的沉降，增强了相对海平面的上升。红树林的持久性意味着能够应对中等高相对海平面升高的能力。然而，许多人类压力威胁着红树林，在整个热带地带的程度上导致持续下降。*

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