Collaborative Research: Mountain Meadow Restoration with a Changing Climate

合作研究：气候变化下的山地草甸恢复

• 批准号: 0729830
• 负责人: Jessica Lundquist
• 金额: $ 21.25万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0729830&HistoricalAwards=false
• 关键词: Collaborative; Research; Mountain; Meadow; Restoration

Loheide, Steven P., PIUniversity of Wisconsin-MadisonCBET-0729838Lundquist, Jessica D., PIUniversity of WashingtonCBET-0729830Collaborative Research: Mountain Meadow Restoration with a Changing ClimateCindy M. Lee, Program Director, [phone] Climate change will affect restoration engineering practices especially in ecosystems that depend on snowmelt and groundwater to provide moisture through the growing season, such as mountain meadow ecosystems along the American Cordillera, where an increasing percentage of precipitation is falling as rain rather than snow, snow that does accumulate is melting earlier, and summers are longer and drier. The goal of this collaborative project is to investigate the range of processes and spatial and temporal scales affecting a meadow ecosystem. Using the well-instrumented Tuolumne Meadows in Yosemite National Park, CA, as a case study, the project team will 1) downscale future climate model scenarios to the study area, 2) use the expected statistical shifts in temperature and precipitation to adjust the historic meteorological record to one that is expected in the future, 3) run a distributed snowmelt and runoff model over the basin to determine how different areas respond to climatic shifts and which areas are most and least sensitive, 4) combine simulated runoff with a hydraulic routing model through the meadow to estimate how stream water levels will be affected by climate change with and without various restoration efforts, 5) model how groundwater levels throughout the meadow will respond to shifts in stream level, and 6) model how vegetation communities are most likely to shift in response to projected water table changes. There is a need to develop the scientific basis for sustainable restoration engineering with explicit consideration of climate change. The new modeling techniques and linkages will serve as a framework for a transferable methodology that can be used to investigate the interrelated effects of climate, hydrology, and vegetation dynamics in other regions and ecosystems. Educational benefits of this project include support for graduate and undergraduate students as well as programs for interpretative rangers and visitors to Yosemite National Park, which attracts about 4 million visitors each year. Results will also be posted online for the general public and resource managers.

Loheide，Steven P.，威斯康星州 - 麦迪逊犬的piuniversity-0729838 lundquist，杰西卡·D。依靠融雪和地下水在整个生长季节提供水分的生态系统，例如沿美国山脉沿线的山地草地生态系统，降水的百分比越来越多，因为降雨而不是降雪，降雪确实较早融化，萨默斯越来越长。这个协作项目的目的是研究影响草地生态系统的过程以及空间和时间尺度的范围。作为一个案例研究，使用加利福尼亚州优胜美地国家公园中有备受根据的图洛姆梅恩草地梅多斯（Tuolumne Meadows），项目团队将1）下降的未来气候模型场景到研究区域，2）使用温度和降水量的预期统计转移来调整历史悠久的气象记录，以将未来的群体和跑步范围置于一个不同的范围内，3）在未来的范围内降低了大多数范围，以确定大部分的基础，以确定基本的差异，以确定基本和跑步的范围。敏感，4）将模拟的径流与通过草地通过液压路由模型结合在一起，以估计有或没有各种恢复工作的气候变化将如何影响溪流水位，5）模型，5）模型，在整个草地上的地下水水平如何响应溪流的变化，以及6）模拟植被社区最可能对预测的水桌变化的响应最大可能的变化。需要明确考虑气候变化的可持续恢复工程的科学基础。新的建模技术和联系将成为可转移方法的框架，该方法可用于研究其他地区和生态系统中气候，水文学和植被动态的相互关联作用。该项目的教育益处包括对研究生和本科生的支持，以及针对优胜美地国家公园的解释性护林员和游客的计划，该公园每年吸引约400万游客。结果还将在线发布给公众和资源经理。