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Ecosystem water balance and ecological drought patterns under historical and future climate conditions for the Four Forest Restoration Initiative (4FRI) Landscape (COPY)


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Andrews, C.A., and Bradford, J.B., 2020, Ecosystem water balance and ecological drought patterns under historical and future climate conditions for the Four Forest Restoration Initiative (4FRI) Landscape: U.S. Geological Survey data release,


These data were compiled for research pertaining to the effects of stand density treatments on growth rates in semi-arid, ponderosa pine forests. Also, these data examined how the planned restoration treatments in the Four Forests Restoration Initiative (4FRI), the largest forest restoration project being implemented in the United States, would alter landscape-scale patterns of forest growth and drought vulnerability throughout the 21st century. Using drought-growth relationships developed within the landscape, we considered a suite of climate and thinning scenarios and estimated both average forest growth and the proportion of years with extremely low growth as a measure of vulnerability to long-term decline. The severity of drought [...]


Point of Contact :
John B Bradford
Originator :
Caitlin A Andrews, John B Bradford
Metadata Contact :
John B Bradford
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Southwest Biological Science Center
USGS Mission Area :

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The purpose of these data are to assess the potential consequences of the planned 4FRI treatments for forest growth resilience in the context of climate change. Specifically, we quantified the impacts of planned 4FRI restoration treatments and projected 21st century climate conditions on 1) stand-level growth, represented by both basal area increment (BAI, a useful measure of potential wood product yield) and proportional growth rates, quantified as BAI divided by basal area (BA), which provides a perspective on the stand vigor), and 2) tree drought stress, represented by the proportion of years with extremely low growth rates, a recognized precursor to eventual drought-driven tree mortality. These data could be used by future researchers to assess the impact of different thinning treatment and climate scenarios on stand-level growth. Additionally, the climate and soil moisture data presented here could be looked at for any number of studies wishing to explore the impact of climate change in the region.


The author(s) of these data request that data users contact them regarding intended use and to assist with understanding limitations and interpretation. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.



  • National CASC
  • National and Regional Climate Adaptation Science Centers

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