Soil Data Explorer - BACKBONE

Official Series Description

Lab Data Summary

Aggregate lab data for the BACKBONE soil series. This aggregation is based on all pedons with a current taxon name of BACKBONE, and applied along 1-cm thick depth slices. Solid lines are the slice-wise median, bounded on either side by the interval defined by the slice-wise 5th and 95th percentiles. The median is the value that splits the data in half. Five percent of the data are less than the 5th percentile, and five percent of the data are greater than the 95th percentile. Values along the right hand side y-axis describe the proportion of pedon data that contribute to aggregate values at this depth. For example, a value of "90%" at 25cm means that 90% of the pedons correlated to BACKBONE were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

Pedons used in the lab summary:

MLRA	Lab ID	Pedon ID	Taxonname	CI	NSSL / NASIS Reports	Link To SoilWeb GMap
104	X45-109-1	S1964IA089017	Backbone	1	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.3287652,-92.1004742
104	X45-109-2	S1974IA089018	Backbone	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	43.3387571,-92.122759
105	X61109C	S1979IA061008	Backbone	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	42.3813656,-91.0298133
105	X53-109-1	S1982IA105019	Backbone	2	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	42.2811127,-90.9374947

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the BACKBONE soil series. Monthly precipitation (PPT) and potential evapotranspiration (PET) have been estimated from the 50th percentile of gridded values (PRISM 1981-2010) overlapping with the extent of SSURGO map units containing each series as a major component. Monthly PET values were estimated using the method of Thornthwaite (1948). These (and other) climatic parameters are calculated with each SSURGO refresh and provided by the fetchOSD function of the soilDB package. Representative water storage values (“AWC” in the figures) were derived from SSURGO by taking the 50th percentile of profile-total water storage (sum[awc_r * horizon thickness]) for each soil series. Note that this representation of “water storage” is based on the average ability of most plants to extract soil water between 15 bar (“permanent wilting point”) and 1/3 bar (“field capacity”) matric potential. Soil moisture state can be roughly interpreted as “dry” when storage is depleted, “moist” when storage is between 0mm and AWC, and “wet” when there is a surplus. Clearly there are a lot of assumptions baked into this kind of monthly water balance. This is still a work in progress.

Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the BACKBONE series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-02) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the BACKBONE series and siblings. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2023-10-09).

Geomorphic description summaries for the BACKBONE series and siblings. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. Proportions can be interpreted as an aggregate representation of geomorphic membership. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Small Shannon entropy values suggest relatively consistent geomorphic association, while larger values suggest lack thereof. Source: SSURGO component records (updated 2023-10-04).

There are insufficient data to create the 3D mountains figure.

Competing Series

Soil series competing with BACKBONE share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2023-10-02) and snapshot of the SC database (updated 2023-10-02).

Select annual climate data summaries for the BACKBONE series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2023-10-09).

Geomorphic description summaries for the BACKBONE series and competing. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Proportions can be interpreted as an aggregate representation of geomorphic membership. Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Shannon entropy values close to 0 represent soil series with relatively consistent geomorphic association, while values close to 1 suggest lack thereof. Source: SSURGO component records (updated 2023-10-04).

There are insufficient data to create the 3D mountains figure.

There are insufficient data to create the 3D flats position figure.

Soil series sharing subgroup-level classification with BACKBONE, arranged according to family differentiae. Hovering over a series name will print full classification and a small sketch from the OSD. Source: snapshot of SC database (updated 2023-10-02).

Block Diagrams

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

1. IA-2011-05-31-23 | Dubuque County - 1986

   Typical pattern of soils and underlying material in the Chelsea-Sogn-Lamont association (Soil Survey of Dubuque County, Iowa; 1986).

Map Units

Map units containing BACKBONE as a major component. Limited to 250 records.

Map Unit Name	Symbol	Map Unit Area (ac)	Map Unit Key	National Map Unit Symbol	Soil Survey Area	Publication Date	Map Scale
Backbone fine sandy loam, 4 to 12 percent slopes	109C	343	402808	fj4t	ia011	1977	1:15840
Backbone sandy loam, 5 to 9 percent slopes	109C	183	1689576	1tq4g	ia017	2008	1:12000
Backbone sandy loam, 2 to 5 percent slopes	109B	159	1689575	1tq4f	ia017	2008	1:12000
Backbone sandy loam, 9 to 14 percent slopes	109D	138	1689577	1tq4h	ia017	2008	1:12000
Backbone fine sandy loam, 2 to 6 percent slopes	109B	588	403200	fjkg	ia019	1978	1:15840
Backbone fine sandy loam, 2 to 9 percent slopes	109C	195	403338	fjpx	ia023	1978	1:15840
Backbone fine sandy loam, 2 to 5 percent slopes	109B	1093	404192	fklg	ia043	1979	1:15840
Backbone fine sandy loam, 5 to 9 percent slopes	109C	891	404193	fklh	ia043	1979	1:15840
Backbone fine sandy loam, 9 to 14 percent slopes	109D	379	404194	fklj	ia043	1979	1:15840
Backbone fine sandy loam, 5 to 9 percent slopes	109C	3137	404972	fldm	ia055	1984	1:15840
Backbone fine sandy loam, 2 to 5 percent slopes	109B	2488	404971	fldl	ia055	1984	1:15840
Backbone fine sandy loam, 5 to 9 percent slopes	109C	1164	405366	fltb	ia061	1983	1:15840
Backbone fine sandy loam, 9 to 14 percent slopes	109D	492	405367	fltc	ia061	1983	1:15840
Backbone fine sandy loam, 2 to 5 percent slopes	109B	762	405688	fm4q	ia065	1975	1:15840
Backbone fine sandy loam, 5 to 9 percent slopes	109C	567	405689	fm4r	ia065	1975	1:15840
Backbone fine sandy loam, 9 to 14 percent slopes	109D	306	405690	fm4s	ia065	1975	1:15840
Backbone fine sandy loam, 2 to 5 percent slopes	109B	241	407005	fnj6	ia089	1969	1:15840
Backbone fine sandy loam, 5 to 9 percent slopes	109C	235	407006	fnj7	ia089	1969	1:15840
Backbone sandy loam, 5 to 9 percent slopes	109C	324	408074	fpmp	ia105	1988	1:15840
Backbone sandy loam, 9 to 18 percent slopes	109E	257	408075	fpmq	ia105	1988	1:15840
Backbone sandy loam, 5 to 9 percent slopes	109C	464	437364	gp3j	ia191	2005	1:12000
Backbone sandy loam, 2 to 5 percent slopes	109B	424	437363	gp3h	ia191	2005	1:12000
Backbone sandy loam, 9 to 14 percent slopes	109D	176	437164	gnx2	ia191	2005	1:12000
Backbone loamy sand, 5 to 10 percent slopes	768C	23	1483218	1lsdr	il007	2006	1:12000
Backbone loamy sand, 2 to 5 percent slopes	768B	862	174163	5v75	il201	1997	1:12000
Backbone loamy sand, 5 to 10 percent slopes	768C	631	174164	5v76	il201	1997	1:12000
Backbone loamy sand, 10 to 15 percent slopes	768D	305	174165	5v77	il201	1997	1:12000
Backbone sandy loam, 1 to 6 percent slopes	475B	1378	400787	fg1m	mn109	1977	1:15840

Map of Series Extent

Approximate geographic distribution of the BACKBONE soil series. To learn more about how this distribution was mapped, or to compare this soil series extent to others, use the Series Extent Explorer (SEE) application. Source: generalization of SSURGO geometry (updated 2023-10-04).