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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.15561
|2 doi
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|a pubmed24n1072.xml
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|a (DE-627)NLM321637860
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|a (NLM)33604995
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Lawrence-Smith, Erin J
|e verfasserin
|4 aut
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|a Full inversion tillage during pasture renewal to increase soil carbon storage
|b New Zealand as a case study
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 23.04.2021
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|a Date Revised 23.04.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2021 John Wiley & Sons Ltd.
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|a As soils under permanent pasture and grasslands have large topsoil carbon (C) stocks, the scope to sequester additional C may be limited. However, because C in pasture/grassland soils declines with depth, there may be potential to sequester additional C in the subsoil. Data from 247 continuous pasture sites in New Zealand (representing five major soil Orders and ~80% of the grassland area) showed that, on average, the 0.15-0.30 m layer contained 25-34 t ha-1 less C than the top 0.15 m. High-production grazed pastures require periodic renewal (re-seeding) every 7-14 years to maintain productivity. Our objective was to assess whether a one-time pasture renewal, involving full inversion tillage (FIT) to a depth of 0.30 m, has potential to increase C storage by burying C-rich topsoil and bringing low-C subsoil to the surface where C inputs from pasture production are greatest. Data from the 247 pasture sites were used to model changes in C stocks following FIT pasture renewal by predicting (1) the C accumulation in the new 0-0.15 m layer and (2) the decomposition of buried-C in the new 0.15-0.30 m layer. In the 20 years following FIT pasture renewal, soil C was predicted to increase by an average of 7.3-10.3 (Sedimentary soils) and 9.6-12.7 t C ha-1 (Allophanic soils), depending on the assumptions applied. Adoption of FIT for pasture renewal across all suitable soils (2.0-2.6 M ha) in New Zealand was predicted to sequester ~20-36 Mt C, sufficient to offset 9.6-17.5% of the country's cumulative greenhouse gas emissions from agriculture over 20 years at the current rate of emissions. Given that grasslands account for ~70% of global agricultural land, FIT renewal of pastures or grassland could offer a significant opportunity to sequester soil C and offset greenhouse gas emissions
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|a Journal Article
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|a deep soil carbon
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|a full inversion tillage
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|a grassland renovation
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|a negative emission practice
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|a offset greenhouse gas emissions
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|a pasture renewal
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|a soil carbon sequestration
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| 650 |
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|a Soil
|2 NLM
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| 650 |
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|a Carbon
|2 NLM
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| 650 |
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|a 7440-44-0
|2 NLM
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| 700 |
1 |
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|a Curtin, Denis
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Beare, Mike H
|e verfasserin
|4 aut
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| 700 |
1 |
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|a McNally, Sam R
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kelliher, Frank M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Calvelo Pereira, Roberto
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hedley, Mike J
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 27(2021), 10 vom: 17. Mai, Seite 1998-2010
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
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|g volume:27
|g year:2021
|g number:10
|g day:17
|g month:05
|g pages:1998-2010
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| 856 |
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|u http://dx.doi.org/10.1111/gcb.15561
|3 Volltext
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