Marine Corps Base Camp Lejeune Intracoastal Waterway digitized shoreline

Critical military training and testing on lands along the nation’s coastal and estuarine shorelines are increasingly placed at risk because of development pressures in surrounding areas, impairments due to other anthropogenic disturbances, and increasing requirements for compliance with environmental regulations. The U.S. Department of Defense (DoD) intends to enhance and sustain its training and testing assets and to 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 minimum 10-year effort at Marine Corps Base Camp Lejeune (MCBCL) in North Carolina. The results of the first six years of the program (DCERP1) are presented here. The overarching objectives of DCERP are to: (1) understand the effects of military training activities, infrastructure development, and other coastal military installations; (2) develop models, tools, and indicators to evaluate ecosystem health; and (3) recommend adaptive management strategies to sustain ecosystem natural resources within the context of an active military installation. The shoreline was digitized as the land water boundary in 2004, 1989, and 1956 imagery. The imagery was obtained from the Installation Geospatial Information & Services Office, ITSD, BLSD, MCB Camp Lejeune, NC. These shorelines were digitized to be used to calculate shoreline-change rates within the New River Estuary as part of the Defense Coastal/Estuarine Research Program. Each shoreline was digitized separately and then merged to create one shapefile containing the shorelines of all three years.美国沿海与河口沿岸区域的关键军事训练与测试活动，正日益面临多重风险：周边区域的开发压力、其他人为扰动造成的生态损害，以及日趋严格的环保合规要求。美国国防部（U.S. Department of Defense, DoD）计划通过在其军事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测试资产，同时优化自然资源管护工作。为实现这一目标，尤其是针对河口/沿海环境中的军事设施，战略环境研究与发展计划（Strategic Environmental Research and Development Program, SERDP）在北卡罗来纳州勒琼海军陆战队基地（Marine Corps Base Camp Lejeune, MCBCL）启动了国防沿海/河口研究计划（Defense Coastal/Estuarine Research Program, DCERP），该项目周期至少为10年。本文呈现了该项目前六年（DCERP1）的研究成果。国防沿海/河口研究计划的核心目标包括：1）明晰军事训练活动、基础设施建设及其他沿海军事设施的生态影响；2）开发用于评估生态系统健康状况的模型、工具与指标；3）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。研究人员针对2004年、1989年及1956年的影像，将水陆边界作为海岸线进行数字化处理。上述影像数据由北卡罗来纳州勒琼海军陆战队基地的设施地理空间信息与服务办公室（Installation Geospatial Information & Services Office, ITSD, BLSD）提供。作为国防沿海/河口研究计划的一部分，这些数字化海岸线将用于计算纽河河口的海岸线变化速率。各年份的海岸线均单独完成数字化，随后合并为一个包含三年海岸线数据的形状文件（shapefile）。