Linking Basin-Scale, Stand-Level, and Individual Tree Water Stress Indicators for Groundwater-Dependent Riparian Forests in Multiple-Use River Basins

将多用途河流流域中依赖地下水的河岸森林的流域规模、林分水平和单树水分胁迫指标联系起来

基本信息

批准号：
1660490
负责人：
John Stella
金额：
$ 45万
依托单位：
SUNY College of Environmental Science and Forestry
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-07-15 至 2022-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1660490&HistoricalAwards=false
关键词：
Linking Basin Scale Stand Level

项目摘要

This research project will develop a suite of water-stress indicators at several scales to assess the health of riparian ecosystems in response to sustained groundwater decline. This project will address a topic of scientific and societal importance, namely how to evaluate and help prevent negative impacts of drought and human-induced water shortages on vulnerable, high-value riparian ecosystems. It will integrate advanced methods in two rapidly emerging fields, hyperspectral remote sensing and isotope dendroecology, to develop a more holistic understanding of water stress at multiple scales of resolution. The project will compare water stress indicators that vary in their timing, strength, and rates of change, and it will facilitate the evaluation of warning signs and time lags among physiological water stress, reduced growth, and dieback in individual trees as well as synoptic forest decline evident throughout a river corridor. This project has the potential to influence groundwater management practices throughout California and in water-limited, multiple-use basins elsewhere. In partnership with The Nature Conservancy and other project collaborators, the investigators will integrate project findings with statewide guidelines for protecting groundwater-dependent riparian ecosystems mandated under California's recently implemented Groundwater Sustainability Management Act. The investigators will interact with groundwater conservation and management efforts in river basins through workshops for managers and stakeholders. They will mentor early-career environmental scientists, including women in STEM fields, and they will conduct outreach activities for elementary and secondary school students to increase regional environmental awareness in the study region.Riparian forests and woodlands are hotspots of biodiversity, and they support key functions and habitats within river corridors, but they are particularly sensitive to large changes in water supply. This project will take place in the Santa Clara River in southern California, where sustained groundwater pumping for irrigation during a severe drought has had negative impacts and allows for study of riparian woodland response to changing environmental conditions over both short and longer terms. The investigators will assess the signals and thresholds of water stress over the last decade using high-resolution aerial imagery and tree-rings to develop predictors of long-term impairment and collapse. They will capitalize on extensive groundwater well records to link water-table dynamics with changes in plant water status detected at two different scales through the use of basin-wide, high-resolution aerial imagery taken seasonally during the drought and annual growth and carbon isotope data from tree rings covering the same period.

该研究项目将在几个尺度上开发一套水应力指标，以评估河岸生态系统的健康，以响应持续的地下水下降。该项目将解决一个科学和社会重要性的话题，即如何评估和帮助预防干旱和人类引起的水短缺对脆弱的高价值河岸生态系统的负面影响。它将在两个快速新兴的领域（高光谱遥感和同位素树状生态学）中整合高级方法，以在多个分辨率的分辨率下对水应力有了更全面的了解。该项目将比较水应力指标的时间，变化率和变化速率各不相同，并有助于评估生理水压力，减少生长以及单个树木以及综合森林中的警告体征和时间滞后在整个河走廊中都有明显的衰落。该项目有可能影响整个加利福尼亚州的地下水管理实践，以及其他地方有限的多用途盆地。与自然保护者和其他项目合作者合作，调查人员将将项目发现与全州范围的指南集成，以保护根据加利福尼亚最近实施的地下水可持续性管理法规定的依赖地下水依赖地下水的河岸生态系统。调查人员将通过为经理和利益相关者的研讨会与河流盆地的地下水保护和管理工作进行互动。他们将指导早期职业环境科学家，包括在STEM领域中的妇女，他们将为小学和中学生开展外展活动，以提高研究区域的区域环境意识。RipiaparianForests和Woodlands是生物多样性的热点，它们支持关键河走廊内的功能和栖息地，但它们对供水的巨大变化特别敏感。该项目将在南加州的圣塔克拉拉河（Santa Clara River）举行，在严重干旱期间，持续的地下水为灌溉提供了负面影响，并允许研究河岸林地对短期和更长的环境条件的反应。研究人员将使用高分辨率的空中图像和树环来评估过去十年中水应力的信号和阈值，以开发长期损害和崩溃的预测指标。他们将利用广泛的地下水井记录，将水塔动力与植物水状态的变化联系起来，通过使用盆地范围内的，高分辨率的空中图像在两种不同的尺度上检测到的变化从覆盖同一时期的树环。

项目成果

期刊论文数量（21）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Characterising groundwater–surface water interactions in idealised ephemeral stream systems

DOI：
10.1002/hyp.13847
发表时间：
2020-07
期刊：
Hydrological Processes
影响因子：
3.2
作者：
E. A. Quichimbo;M. Singer;M. Cuthbert
通讯作者：
E. A. Quichimbo;M. Singer;M. Cuthbert

Modeling Subsurface Hydrology in Floodplains

洪泛区地下水文建模

DOI：
10.1002/2017wr020827
发表时间：
2018
期刊：
Water Resources Research
影响因子：
5.4
作者：
Evans, Cristina M.;Dritschel, David G.;Singer, Michael B.
通讯作者：
Singer, Michael B.

Vegetation responses to climatic and geologic controls on water availability in southeastern Arizona

亚利桑那州东南部植被对气候和地质控制对水资源可用性的响应

DOI：
10.1088/1748-9326/abfe8c
发表时间：
2021
期刊：
Environmental Research Letters
影响因子：
6.7
作者：
Sabathier, Romy;Singer, Michael Bliss;Stella, John C;Roberts, Dar A;Caylor, Kelly K
通讯作者：
Caylor, Kelly K

Identification of Source‐Water Oxygen Isotopes in Trees Toolkit (ISO‐Tool) for Deciphering Historical Water Use by Forest Trees