 |
| Titel |
The Unified North American Soil Map and its implication on the soil organic carbon stock in North America |
| VerfasserIn |
S. Liu, Y. Wei, W. M. Post, R. B. Cook, K. Schaefer, M. M. Thornton |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1726-4170
|
| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 10, no. 5 ; Nr. 10, no. 5 (2013-05-02), S.2915-2930 |
| Datensatznummer |
250018229
|
| Publikation (Nr.) |
 copernicus.org/bg-10-2915-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| The Unified North American Soil Map (UNASM) was developed to provide more
accurate regional soil information for terrestrial biosphere modeling. The
UNASM combines information from state-of-the-art US STATSGO2 and Soil
Landscape of Canada (SLCs) databases. The area not covered by these datasets
is filled by using the Harmonized World Soil Database version 1.21 (HWSD1.21).
The UNASM contains maximum soil depth derived from the data source as well
as seven soil attributes (including sand, silt, and clay content, gravel
content, organic carbon content, pH, and bulk density) for the topsoil
layer (0–30 cm) and the subsoil layer (30–100 cm), respectively, of the
spatial resolution of 0.25 degrees in latitude and longitude. There are
pronounced differences in the spatial distributions of soil properties and
soil organic carbon between UNASM and HWSD, but the UNASM overall provides
more detailed and higher-quality information particularly in Alaska and
central Canada. To provide more accurate and up-to-date estimate of soil
organic carbon stock in North America, we incorporated Northern Circumpolar
Soil Carbon Database (NCSCD) into the UNASM. The estimate of total soil
organic carbon mass in the upper 100 cm soil profile based on the improved
UNASM is 365.96 Pg, of which 23.1% is under trees, 14.1% is in
shrubland, and 4.6% is in grassland and cropland. This UNASM data will
provide a resource for use in terrestrial ecosystem modeling both for input
of soil characteristics and for benchmarking model output. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|