The ecology of soil carbon pools, vulnerabilities, and biotic and abiotic controls
Soil organic matter (SOM) anchors global terrestrial productivity and food and fiber supply. SOM retains water and soil nutrients and stores more global carbon than do plants and the atmosphere combined. SOM is also decomposed by microbes, returning CO2, a greenhouse gas, to the atmosphere. Unfortunately, soil carbon stocks have been widely lost or degraded through land use changes and unsustainable forest and agricultural practices To understand its structure and function and to maintain and restore SOM, we need a better appreciation of soil organic carbon (SOC) saturation capacity and the retention of above- and belowground inputs in SOM. Our analysis suggests root inputs are approximately five times more likely than an equivalentmass of aboveground litter to be stabilized as SOM.Microbes, particularly fungi and bacteria, and soil faunal food webs strongly influence SOM decomposition at shallower depths, whereas mineral associations drive stabilization at depths greater than ∼30 cm. Global uncertainties in the amounts and locations of SOM include the extent of wetland, peatland, and permafrost systems and factors that constrain soil depths, such as shallow bedrock. In consideration of these uncertainties, we estimate global SOC stocks at depths of 2 and 3 m to be between 2,270 and 2,770 Pg, respectively, but could be as much as 700 Pg smaller. Sedimentary deposits deeper than 3 m likely contain greater than 500 Pg of additional SOC. Soils hold the largest biogeochemically active terrestrial carbon pool on Earth and are critical for stabilizing atmospheric CO2 concentrations. Nonetheless, global pressures on soils continue from changes in land management, including the need for increasing bioenergy and food production.
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Texto biblioteca |
| Language: | eng |
| Subjects: | GLOBAL CARBON STOCKS, LITTER AND ROOT INPUTS, SOIL CARBON MITIGATION AND VULNERABILITIES, SOIL FAUNA AND FOOD WEB ECOLOGY, SOIL ORGANIC CARBON, SOIL ORGANIC NITROGEN, SOIL ORGANIC MATTER, |
| Online Access: | http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47440 http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber= |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
KOHA-OAI-AGRO:47440 |
|---|---|
| record_format |
koha |
| institution |
UBA FA |
| collection |
Koha |
| country |
Argentina |
| countrycode |
AR |
| component |
Bibliográfico |
| access |
En linea En linea |
| databasecode |
cat-ceiba |
| tag |
biblioteca |
| region |
America del Sur |
| libraryname |
Biblioteca Central FAUBA |
| language |
eng |
| topic |
GLOBAL CARBON STOCKS LITTER AND ROOT INPUTS SOIL CARBON MITIGATION AND VULNERABILITIES SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC CARBON SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC NITROGEN SOIL ORGANIC MATTER GLOBAL CARBON STOCKS LITTER AND ROOT INPUTS SOIL CARBON MITIGATION AND VULNERABILITIES SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC CARBON SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC NITROGEN SOIL ORGANIC MATTER |
| spellingShingle |
GLOBAL CARBON STOCKS LITTER AND ROOT INPUTS SOIL CARBON MITIGATION AND VULNERABILITIES SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC CARBON SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC NITROGEN SOIL ORGANIC MATTER GLOBAL CARBON STOCKS LITTER AND ROOT INPUTS SOIL CARBON MITIGATION AND VULNERABILITIES SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC CARBON SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC NITROGEN SOIL ORGANIC MATTER Jackson, Robert B. Lajtha, Kate Crow, Susan E. Hugelius, Gustaf Kramer, Marc G. Piñeiro, Gervasio The ecology of soil carbon pools, vulnerabilities, and biotic and abiotic controls |
| description |
Soil organic matter (SOM) anchors global terrestrial productivity and food and fiber supply. SOM retains water and soil nutrients and stores more global carbon than do plants and the atmosphere combined. SOM is also decomposed by microbes, returning CO2, a greenhouse gas, to the atmosphere. Unfortunately, soil carbon stocks have been widely lost or degraded through land use changes and unsustainable forest and agricultural practices To understand its structure and function and to maintain and restore SOM, we need a better appreciation of soil organic carbon (SOC) saturation capacity and the retention of above- and belowground inputs in SOM. Our analysis suggests root inputs are approximately five times more likely than an equivalentmass of aboveground litter to be stabilized as SOM.Microbes, particularly fungi and bacteria, and soil faunal food webs strongly influence SOM decomposition at shallower depths, whereas mineral associations drive stabilization at depths greater than ∼30 cm. Global uncertainties in the amounts and locations of SOM include the extent of wetland, peatland, and permafrost systems and factors that constrain soil depths, such as shallow bedrock. In consideration of these uncertainties, we estimate global SOC stocks at depths of 2 and 3 m to be between 2,270 and 2,770 Pg, respectively, but could be as much as 700 Pg smaller. Sedimentary deposits deeper than 3 m likely contain greater than 500 Pg of additional SOC. Soils hold the largest biogeochemically active terrestrial carbon pool on Earth and are critical for stabilizing atmospheric CO2 concentrations. Nonetheless, global pressures on soils continue from changes in land management, including the need for increasing bioenergy and food production. |
| format |
Texto |
| topic_facet |
GLOBAL CARBON STOCKS LITTER AND ROOT INPUTS SOIL CARBON MITIGATION AND VULNERABILITIES SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC CARBON SOIL FAUNA AND FOOD WEB ECOLOGY SOIL ORGANIC NITROGEN SOIL ORGANIC MATTER |
| author |
Jackson, Robert B. Lajtha, Kate Crow, Susan E. Hugelius, Gustaf Kramer, Marc G. Piñeiro, Gervasio |
| author_facet |
Jackson, Robert B. Lajtha, Kate Crow, Susan E. Hugelius, Gustaf Kramer, Marc G. Piñeiro, Gervasio |
| author_sort |
Jackson, Robert B. |
| title |
The ecology of soil carbon pools, vulnerabilities, and biotic and abiotic controls |
| title_short |
The ecology of soil carbon pools, vulnerabilities, and biotic and abiotic controls |
| title_full |
The ecology of soil carbon pools, vulnerabilities, and biotic and abiotic controls |
| title_fullStr |
The ecology of soil carbon pools, vulnerabilities, and biotic and abiotic controls |
| title_full_unstemmed |
The ecology of soil carbon pools, vulnerabilities, and biotic and abiotic controls |
| title_sort |
ecology of soil carbon pools, vulnerabilities, and biotic and abiotic controls |
| url |
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47440 http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber= |
| work_keys_str_mv |
AT jacksonrobertb theecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT lajthakate theecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT crowsusane theecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT hugeliusgustaf theecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT kramermarcg theecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT pineirogervasio theecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT jacksonrobertb ecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT lajthakate ecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT crowsusane ecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT hugeliusgustaf ecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT kramermarcg ecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols AT pineirogervasio ecologyofsoilcarbonpoolsvulnerabilitiesandbioticandabioticcontrols |
| _version_ |
1774396352367689728 |
| spelling |
KOHA-OAI-AGRO:474402023-08-11T14:41:18Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47440http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGThe ecology of soil carbon pools, vulnerabilities, and biotic and abiotic controlsJackson, Robert B.Lajtha, KateCrow, Susan E.Hugelius, GustafKramer, Marc G.Piñeiro, Gervasiotextengapplication/pdfSoil organic matter (SOM) anchors global terrestrial productivity and food and fiber supply. SOM retains water and soil nutrients and stores more global carbon than do plants and the atmosphere combined. SOM is also decomposed by microbes, returning CO2, a greenhouse gas, to the atmosphere. Unfortunately, soil carbon stocks have been widely lost or degraded through land use changes and unsustainable forest and agricultural practices To understand its structure and function and to maintain and restore SOM, we need a better appreciation of soil organic carbon (SOC) saturation capacity and the retention of above- and belowground inputs in SOM. Our analysis suggests root inputs are approximately five times more likely than an equivalentmass of aboveground litter to be stabilized as SOM.Microbes, particularly fungi and bacteria, and soil faunal food webs strongly influence SOM decomposition at shallower depths, whereas mineral associations drive stabilization at depths greater than ∼30 cm. Global uncertainties in the amounts and locations of SOM include the extent of wetland, peatland, and permafrost systems and factors that constrain soil depths, such as shallow bedrock. In consideration of these uncertainties, we estimate global SOC stocks at depths of 2 and 3 m to be between 2,270 and 2,770 Pg, respectively, but could be as much as 700 Pg smaller. Sedimentary deposits deeper than 3 m likely contain greater than 500 Pg of additional SOC. Soils hold the largest biogeochemically active terrestrial carbon pool on Earth and are critical for stabilizing atmospheric CO2 concentrations. Nonetheless, global pressures on soils continue from changes in land management, including the need for increasing bioenergy and food production.Soil organic matter (SOM) anchors global terrestrial productivity and food and fiber supply. SOM retains water and soil nutrients and stores more global carbon than do plants and the atmosphere combined. SOM is also decomposed by microbes, returning CO2, a greenhouse gas, to the atmosphere. Unfortunately, soil carbon stocks have been widely lost or degraded through land use changes and unsustainable forest and agricultural practices To understand its structure and function and to maintain and restore SOM, we need a better appreciation of soil organic carbon (SOC) saturation capacity and the retention of above- and belowground inputs in SOM. Our analysis suggests root inputs are approximately five times more likely than an equivalentmass of aboveground litter to be stabilized as SOM.Microbes, particularly fungi and bacteria, and soil faunal food webs strongly influence SOM decomposition at shallower depths, whereas mineral associations drive stabilization at depths greater than ∼30 cm. Global uncertainties in the amounts and locations of SOM include the extent of wetland, peatland, and permafrost systems and factors that constrain soil depths, such as shallow bedrock. In consideration of these uncertainties, we estimate global SOC stocks at depths of 2 and 3 m to be between 2,270 and 2,770 Pg, respectively, but could be as much as 700 Pg smaller. Sedimentary deposits deeper than 3 m likely contain greater than 500 Pg of additional SOC. Soils hold the largest biogeochemically active terrestrial carbon pool on Earth and are critical for stabilizing atmospheric CO2 concentrations. Nonetheless, global pressures on soils continue from changes in land management, including the need for increasing bioenergy and food production.GLOBAL CARBON STOCKSLITTER AND ROOT INPUTSSOIL CARBON MITIGATION AND VULNERABILITIESSOIL FAUNA AND FOOD WEB ECOLOGYSOIL ORGANIC CARBONSOIL FAUNA AND FOOD WEB ECOLOGYSOIL ORGANIC NITROGENSOIL ORGANIC MATTERAnnual Review of Ecology, Evolution, and Systematics |