Marine Corps Base Camp Lejeune Marsh Surface Microlayer

Critical military training and testing on lands along the nation’s coastal and estuarine shorelines are increasingly placed at risk because of encroachment pressures in surrounding areas, impairments due to other anthropogenic disturbances, and changes in climate and sea level. The U.S. Department of Defense (DoD) intends to enhance and sustain its training and testing assets and also optimize its stewardship of natural resources through the development and application of an ecosystem-based management approach on DoD installations. To accomplish this goal, particularly for installations in estuarine/coastal environments, the Strategic Environmental Research and Development Program (SERDP) launched the Defense Coastal/Estuarine Research Program (DCERP) as a 10-year effort at Marine Corps Base Camp Lejeune (MCBCL) in North Carolina. The results of the second 5 years of the program (DCERP2) are presented in the DCERP2 Final Report. There were four overarching objectives of DCERP2. The first objective was to understand the effects of climate change impacts, including warming temperatures, variability in the hydrological cycle, storm events, and sea level rise on the coastal ecosystems at MCBCL from observations and measurements made over the 10-year program. The second objective was to understand the carbon cycle of the coastal and terrestrial ecosystems at MCBCL through a highly integrated sampling program. The third objective was to develop models, tools, and indicators to evaluate current and projected future ecosystem state changes and translate scientific findings into actionable information for installation managers. The last objective was to recommend adaptive management strategies to sustain ecosystem natural resources within the context of an active military installation. Measurements were made of sediment contained in the surface microlayer of water in the creek channel and marsh at Freeman Creek. The measurements were made to compare with the suspended sediment concentrations measured at Freeman Creek.

美国沿海与河口海岸沿线区域的关键军事训练与试验活动，正日益面临周边区域侵占压力、其他人为扰动引发的生态损害，以及气候与海平面变化带来的多重风险。美国国防部（U.S. Department of Defense, DoD）计划通过在其设施中开发并应用基于生态系统的管理方法，强化并维持其训练与试验资产，同时优化自然资源管护工作。为达成这一目标，尤其是针对河口/沿海环境中的国防部设施，战略环境研究与发展计划（Strategic Environmental Research and Development Program, SERDP）在北卡罗来纳州的勒琼海军陆战队基地（Marine Corps Base Camp Lejeune, MCBCL）启动了为期10年的国防部沿海/河口研究计划（Defense Coastal/Estuarine Research Program, DCERP）。该计划第二个五年阶段（DCERP2）的研究成果收录于《DCERP2最终报告》。DCERP2共设定四项核心总体目标：其一，通过为期10年的项目观测与测量数据，明晰气候变化影响（包括气温升高、水文循环变异、风暴事件及海平面上升）对勒琼海军陆战队基地沿海生态系统的效应；其二，通过高度集成的采样计划，探明该基地沿海与陆地生态系统的碳循环过程；其三，开发模型、工具与指标体系，用以评估当前及预测的未来生态系统状态变化，并将科学研究成果转化为可供设施管理人员使用的可操作信息；其四，提出适应性管理策略，以在现役军事设施的运营背景下维持生态系统自然资源的可持续性。研究人员对弗里曼溪（Freeman Creek）溪道与沼泽水域的水面微层沉积物开展了测量，此次测量旨在与弗里曼溪测得的悬浮泥沙浓度进行对比分析。