|
|
|
|
| LEADER |
04220ntm a22004097 4500 |
| 001 |
2754afa9-476d-4104-a174-cf088128e19f |
| 005 |
20240903000000.0 |
| 008 |
121127s2012 xx a b 000 0 eng d |
| 020 |
|
|
|z 9781267712738
|q (electronic)
|
| 035 |
|
|
|a (OCoLC)819846813
|
| 035 |
|
|
|a (OCoLC)ocn819846813
|
| 035 |
|
|
|a (PU)5860727-penndb-Voyager
|
| 035 |
|
|
|a 5860727
|
| 035 |
|
|
|a PDISSAAI3542803
|
| 040 |
|
|
|a PU
|b eng
|c PU
|
| 100 |
1 |
|
|a Feng, Wenting
|
| 245 |
1 |
0 |
|a Testing the soil carbon saturation theory :
|b maximal carbon stabilization and soil organic matter stability as a function of organic carbon inputs /
|c Wenting Feng
|
| 264 |
|
0 |
|c 2012
|
| 300 |
|
|
|a xii, 173 pages :
|b illustrations ;
|c 29 cm
|
| 336 |
|
|
|a text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a unmediated
|b n
|2 rdamedia
|
| 338 |
|
|
|a volume
|b nc
|2 rdacarrier
|
| 500 |
|
|
|a Advisers: Alain F. Plante; Arthur H. Johnson
|
| 502 |
|
|
|a Thesis (Ph.D. in Earth and Environmental Science ) -- University of Pennsylvania, 2012
|
| 504 |
|
|
|a Includes bibliographical references
|
| 520 |
|
|
|a Soil carbon (C) stocks and fluxes represent significant components of the global C cycle. Application of the soil C saturation theory can help identify soils with large C storage potentials and estimate rates and durations needed to reach maximal soil C storage. The goal of my dissertation was to test the soil C saturation theory by estimating C saturation levels of fine soil particles and quantifying changes in soil organic matter (SOM) stability as fine soil particles approach C saturation. Current model using least-squares linear regression generally underestimates C the maximal amount of soil C stabilization in fine soil particles. Using an analysis of published data, I proposed two alternative methods (boundary line analysis and the organic C loading method) to improve estimates, and found that while the organic C loading method is better since it incorporated mineral specific surface areas which would influence C saturation, it requires information about soil mineralogy and further tests to determine whether the monolayer-equivalent C loading indeed represents a maximal C stabilization potential. Laboratory batch sorption experiment of dissolved organic matter onto soil minerals generated organo-mineral complexes with a range of organic C loadings. These organo-mineral complexes, as well as silt+clay fractions physically isolated from soil samples from three long-term agroecosystem field experiments with differing fertilizer and manure addition treatments, were used to test for differences in SOM stability as a function of organic C loading. Biological, chemical, and thermal test of SOM stability showed little change or the increase trend of SOM stability with increasing organic C inputs, which do not support the notion of the soil C saturation theory that SOM stability decreases as organic C inputs increase. This observation of SOM stability is likely due to the fact that most samples did not exhibit C saturation behavior. The results show that most soils are likely well below C saturation, and further studies of the driving factors (e.g., chemical composition of organic C inputs, mineralogy, and organo-mineral binding types and strength) is needed to determine maximal C loadings and estimate the maximal soil C storage potentials
|
| 650 |
|
4 |
|a Earth and environmental science
|x Penn dissertations
|
| 650 |
|
4 |
|a Penn dissertations
|x Earth and environmental science
|
| 700 |
1 |
|
|a Johnson, A. H
|q (Arthur H.),
|e advisor.
|
| 700 |
1 |
|
|a Johnson, A. H
|q (Arthur H.),
|e committee member.
|
| 700 |
1 |
|
|a Plante, Alain F.,
|e advisor
|
| 700 |
1 |
|
|a Plante, Alain F.,
|e committee member
|
| 700 |
1 |
|
|a Scatena, F. N.,
|e committee member
|
| 700 |
1 |
|
|a Six, Johan,
|e committee member
|
| 710 |
2 |
|
|a University of Pennsylvania
|b Earth and Environmental Science.
|
| 999 |
1 |
0 |
|i 2754afa9-476d-4104-a174-cf088128e19f
|l 9958607273503681
|s US-PU
|m testing_the_soil_carbon_saturation_theorymaximal_carbon_stabilization______2012____________t________________________________________feng__wenting______________________p
|
| 999 |
1 |
1 |
|l 9958607273503681
|s ISIL:US-PU
|t BKS
|a Libra stor
|b 31198059985569
|c QE001 2012 .F332
|d 0
|x MANUSCRIPT
|y 23381092270003681
|p LOANABLE
|