Coastal SEES Collaborative Research: Salinization of the Coastal Plain through Saltwater Intrusion - Landscapes in Transition along the Leading Edge of Climate Change

沿海 SEES 合作研究：盐水入侵导致沿海平原盐碱化 - 气候变化前沿的景观转型

基本信息

批准号：
1713435
负责人：
Marcelo Ardon-Sayao
金额：
$ 23.74万
依托单位：
North Carolina State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2016
资助国家：
美国
起止时间：
2016-08-16 至 2020-09-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1713435&HistoricalAwards=false
关键词：
Coastal SEES Collaborative Research Salinization

项目摘要

Ocean waters are infiltrating and influencing freshwater-dependent coastal landscapes due to a combination of human and natural factors. By the end of this century, lower-lying parts of the outer edge of the Southern U.S. coastal plain will be largely inundated by saltwater due to gradual sea level rise. The salinization of surface waters and adjacent lands may lead to significant reductions in crop and timber yields in managed ecosystems, significant declines in ecosystem carbon sequestration in unmanaged ecosystems, and degradation of coastal water quality due to extraction of soil nutrients by seasalts. This project will enhance understanding of the coupled human and natural processes influencing salinization of surface waters and adjacent lands. Investigators will build and engage a coalition of expert stakeholders, including members of state and local governments, regional planning groups, landowners and advocacy organizations. Partnerships with stakeholders will help investigators define the current status of coastal ecosystems, identify critical knowledge gaps, share new research findings, and develop and explore future land use and climate scenarios. This project will yield outcomes with predictive value in coastal systems that are easily understood by stakeholders while representing complex interactions between climate, hydrology, land use, and ecological processes and identify pathways by which outcomes could be used to enhance coastal sustainability. Together, these activities will help guide sustainable management of this region and similarly affected regions over the next several decades to centuries. Additional broader impacts include training four Ph.D. students in interdisciplinary research that spans natural and social sciences, engaging undergraduate students in mentored research experiences, and broadening participation of underrepresented groups in the sciences by supporting early career investigators and working to recruit students from underrepresented groups. This project is supported as part of the National Science Foundation's Coastal Science, Engineering, and Education for Sustainability program - Coastal SEES.This project focuses on saltwater intrusion, the landward movement of salinity from the coast onto the coastal plain. A team of investigators representing four disciplines (hydrology, biogeochemistry, community ecology, regional planning) will integrate social, hydrological, climate and ecological data into model scenarios to examine not only how human decisions affect ecosystems but also how information about those ecological impacts in turn affect human decisions. This project will facilitate development, validation and refinement of a saltwater intrusion vulnerability index (SIVI) for the Albemarle-Pamlico peninsula of North Carolina that accounts for physical environmental processes influencing the movement of water and solutes across the landscape as well as the extensive networks of canals, ditches, roads and pump stations that fundamentally alter the flow of water across the region. The index will be used, along with extensive and repeated ground-based surveys of surface water, soil and vegetation conditions across a range of vulnerable landscapes within the region, to better understand ecological impacts of saltwater intrusion. Through workshops and surveys for landowners, managers and other stakeholders in the region, the project will reveal the likely impact of land-use decisions on saltwater intrusion under scenarios of climate change.

由于人类和自然因素的结合，海水正在渗透并影响淡水依赖的沿海景观。到本世纪末，由于海平面逐渐上升，美国南部沿海平原外边缘的下层部分将在很大程度上被盐水淹没。地表水和邻近土地的盐分可能会导致托管生态系统的作物和木材产量的显着降低，无托管生态系统的生态系统碳固化的大幅下降，以及由于贝纳特人萃取土壤养分而导致的沿海水质降解。该项目将增强对影响地表水和邻近土地盐化的人类和自然过程的理解。调查人员将建立并与专家利益相关者组成，包括州和地方政府，区域规划小组，土地所有者和倡导组织。与利益相关者的伙伴关系将帮助调查人员定义沿海生态系统的当前状况，确定关键知识差距，分享新的研究结果，并开发和探索未来的土地使用和气候场景。该项目将在沿海系统中产生具有预测价值的结果，这些结果很容易被利益相关者理解，同时代表气候，水文学，土地使用和生态过程之间的复杂相互作用，并确定可以使用结果来增强沿海可持续性的途径。这些活动共同有助于指导该地区的可持续管理，并在接下来的几十年到几个世纪中受到类似影响的地区。其他更广泛的影响包括培训四博士学位。跨学科研究的学生跨越了自然和社会科学，吸引本科生参与指导的研究经验，并通过支持早期职业研究人员并致力于从代表性不足的群体中招募学生，从而扩大了代表性不足的群体的参与。该项目是国家科学基金会沿海科学，工程和可持续发展教育计划的一部分 - 沿海地区的一部分。该项目侧重于盐水入侵，这是盐度从沿海地区到沿海平原的陆地运动。一个代表四个学科（水文，生物地球化学，社区生态学，区域规划）的调查人员团队将将社会，水文，气候和生态数据整合到模型场景中，不仅研究人类的决策如何影响生态系统，还会研究有关这些生态影响的信息如何影响人类的决策。该项目将促进北卡罗来纳州阿尔巴尔 - 帕米洛（Albemarle-Pamlico）半岛的盐水入侵脆弱性指数（SIVI）的开发，验证和改进，这些脆弱性指数（SIVI）占了影响的物理环境过程，从而影响了景观的水和溶液的运动，以及散落的运河，道路，道路和泵的广泛网络，该领域的流量越来越多。该指数将在该地区的一系列脆弱的景观中，对地表水，土壤和植被条件进行广泛的，重复的地面调查，以更好地了解盐水侵入的生态影响。通过对该地区的土地所有者，经理和其他利益相关者的研讨会和调查，该项目将揭示土地利用决策对气候变化情况下对盐水入侵的影响。