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首页> 外文期刊>Environmental Management >Carbon Sequestration in Tidal Salt Marshes of the Northeast United States
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Carbon Sequestration in Tidal Salt Marshes of the Northeast United States

机译：美国东北部潮汐盐沼中的碳固存

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摘要

Tidal salt marshes provide important ecological services, habitat, disturbance regulation, water quality improvement, and biodiversity, as well as accumulation and sequestration of carbon dioxide (CO_2) in vegetation and soil organic matter. Different management practices may alter their capacity to provide these ecosystem services. We examined soil properties (bulk density, percent organic C, percent N), C and N pools, C sequestration and N accumulation at four marshes managed with open marsh water management (OMWM) and four marshes that were not at U.S. Fish and Wildlife National Wildlife Refuges (NWRs) on the East Coast of the United States. Soil properties (bulk density, percent organic C, percent N) exhibited no consistent differences among managed and non-OMWM marshes. Soil organic carbon pools (0-60-cm depth) also did not differ. Managed marshes contained 15.9 kg C/m~2 compared to 16.2 kg C/m~2 in non-OMWM marshes. Proportionately, more C (per unit volume) was stored in surface than in subsurface soils. The rate of C sequestration, based on ~(137)Cs and ~(210)Pb dating of soil cores, ranged from 41 to 152 g/m~2/year. Because of the low emissions of CH_4 from salt marshes relative to freshwater wetlands and the ability to sequester C in soil, protection and restoration of salt marshes can be a vital tool for delivering key ecosystem services, while at the same time, reducing the C footprint associated with managing these wetlands.
机译：潮汐盐沼提供重要的生态服务，栖息地，干扰调节，水质改善和生物多样性，以及植被和土壤有机质中二氧化碳（CO_2）的积累和隔离。不同的管理实践可能会改变其提供这些生态系统服务的能力。我们检查了土壤的特性（散装密度，有机碳百分比，氮百分比），碳和氮库，在开放式沼泽水管理（OMWM）管理的四个沼泽和在美国鱼类和野生动物管理局以外的四个沼泽的土壤固​​碳和氮积累美国东海岸的野生动物保护区（NWR）。在管理和非OMWM沼泽之间，土壤性质（堆积密度，有机碳百分比，氮百分比）没有显示出一致的差异。土壤有机碳库（0-60厘米深）也没有差异。受管理的沼泽含15.9 kg C / m〜2，而非OMWM沼泽含16.2 kg C / m〜2。与地下土壤相比，地表中存储的碳（单位体积）更多。基于〜（137）Cs和〜（210）Pb的土壤核定年，C的固存速率范围为41至152 g / m〜2 /年。由于相对于淡水湿地而言，盐沼中CH_4的排放量低，并且能够将C螯合在土壤中，因此盐沼的保护和恢复可以成为提供关键生态系统服务的重要工具，同时减少C足迹与管理这些湿地有关。

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  • 来源
    《Environmental Management》 |2015年第4期|998-1008|共11页
  • 作者

    Katherine Drake; Holly Halifax; Susan C. Adamowicz; Christopher Craft;

  • 作者单位

    School of Public and Environmental Affairs, Indiana University, MSB Ⅱ Room 408, 702 North Walnut Grove Ave, Bloomington, IN 47405, USA;

    School of Public and Environmental Affairs, Indiana University, MSB Ⅱ Room 408, 702 North Walnut Grove Ave, Bloomington, IN 47405, USA,US Government Accountability Office, 441 G St. NW, Washington, DC 20548, USA;

    Rachel Carson National Wildlife Refuge, 321 Port Rd, Wells, ME 04090, USA;

    School of Public and Environmental Affairs, Indiana University, MSB Ⅱ Room 408, 702 North Walnut Grove Ave, Bloomington, IN 47405, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Salt marsh; Radiometric dating; Carbon sequestration; Management; US National Wildlife Refuge; Carbon trading;

    机译：盐沼辐射测年碳汇;管理;美国国家野生动物保护区;碳交易;

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