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soil water potential in thinned and non-thinned ponderosa pine forest
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Created: Oct 14, 2024 at 1:18 a.m.
Last updated: Feb 24, 2025 at 3:32 p.m.
Published date: Feb 24, 2025 at 3:32 p.m.
DOI: 10.4211/hs.2c7a21282cbb490e87dad49547975189
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Sharing Status: Published
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Abstract

This data publication supports the study of soil water potential in thinned and non-thinned ponderosa pine (pinus ponderosa) forest in northern Arizona. The data represent soil water potential measurements (kPa) from ~130 sensors at 21 locations spread across adjacent thinned and non-thinned ponderosa pine stands during the spring dry season, from April 1 to the start of the monsoon. Thinning occurred in 2018 and followed a variable density thinning prescription. Five seasons of data are provided, from 2019 - 2023, and measurements were taken at 25, 50, and 100 centimeter depths. Parameters measured include mean soil water potential (kPa), date of onset of soil drying (in days after April 1), and the time spent at or below critical drying conditions (-1000 kPa) (measured in days).

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Chimney Springs
North Latitude
35.2614°
East Longitude
-111.6697°
South Latitude
35.2487°
West Longitude
-111.6851°

Temporal

Start Date:
End Date:

Content

README.txt 

README file for SWP_2019-2023.csv
Authors: Julia Tatum and Temuulen Sankey
Northern Arizona University, Flagstaff, AZ, USA

Data overview:
	These data represent soil water potential in thinned and non-thinned
	forest at (111°40'40"W, 35°15'26"N) during the spring dry seasons of 
	2019 - 2023. The spring dry season was defined as the period from 
	April 1 to the start of the monsoon. Each row represents data from
	a single sensor.


Variable description and units:
	"year" - The year of data collection
	"Mean SWP" - Mean soil water potential (kPa) during the spring dry season
	"Onset" - Date on which the soil dried to a value of -100 kPa, considered
		  to indicate the start of the seasonal drying trend. Measured as 
		  the number of days after April 1.
	"Critical Drying Days" - The number of days spent below -1000 kPa during
		  the spring dry season. Units in days.
	"Treatment" - Represents the surrounding forest conditions. Three possible 
		  values: "Thinned" = thinned forest, "NT_edge" = non-thinned forest
		  near the thinned/non-thinned boundary, with a relatively open 
		  canopy and many small and young trees, and "NT_dense" = interior 
		  non-thinned forest, with a generally closed canopy and many closely-
		  spaced trees.
	"Depth" - The depth of soil water potential measurement. Possible values are:
		  25 cm, 50 cm, and 100 cm.

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
The Nature Conservancy
Salt River Project

How to Cite

Tatum, J., T. Sankey (2025). soil water potential in thinned and non-thinned ponderosa pine forest, HydroShare, https://doi.org/10.4211/hs.2c7a21282cbb490e87dad49547975189

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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