Details
| Original language | English |
|---|---|
| Pages (from-to) | 117-161 |
| Number of pages | 45 |
| Journal | GEODERMA |
| Volume | 79 |
| Issue number | 1-4 |
| Publication status | Published - Sept 1997 |
| Externally published | Yes |
Abstract
The first part of this review focuses on the chemical composition and morphological features that characterize primary and secondary organic resources for humification. The chemical pathways of decomposition and humification of SOM in tropical soils are discussed referring mainly to the chemical structural changes identified by using both solid-state 13C nuclear magnetic resonance spectroscopy (13C NMR) of bulk soil samples and liquid-state 13C NMR of chemically isolated SOM fractions. The stabilization effects and mechanisms exerted on SOM by clay minerals and sesquioxides in tropical soils are also reviewed. Successively, relevant aspects of organic matter mobilization and dissolved organic matter dynamics in temperate versus tropical ecosystems are examined. In the second part of the review, general and specific aspects of mineralization processes in relation to the chemistry of main SOM pools (labile versus stable SOM components) in the tropics are discussed. Amounts, distribution, and forms of nutrients in SOM, nutrient release from organic versus inorganic sources, nutrient cycling in natural and cultivated soils, and the contribution of SOM to cationic nutrition in tropical soils are reviewed. The final part of the review focuses on the main chemical factors that control CO2 evolution and denitrification processes during SOM mineralization in tropical areas.
Keywords
- Chemical characterization of SOM, Ecology, Fertility, Humification, Mineralization, Organic matter, Soil, Tropical soils
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Soil Science
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In: GEODERMA, Vol. 79, No. 1-4, 09.1997, p. 117-161.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Factors controlling humification and mineralization of soil organic matter in the tropics
AU - Zech, Wolfgang
AU - Senesi, Nicola
AU - Guggenberger, Georg
AU - Kaiser, Klaus
AU - Lehmann, Johannes
AU - Miano, Teodoro M.
AU - Miltner, Anja
AU - Schroth, Götz
PY - 1997/9
Y1 - 1997/9
N2 - The first part of this review focuses on the chemical composition and morphological features that characterize primary and secondary organic resources for humification. The chemical pathways of decomposition and humification of SOM in tropical soils are discussed referring mainly to the chemical structural changes identified by using both solid-state 13C nuclear magnetic resonance spectroscopy (13C NMR) of bulk soil samples and liquid-state 13C NMR of chemically isolated SOM fractions. The stabilization effects and mechanisms exerted on SOM by clay minerals and sesquioxides in tropical soils are also reviewed. Successively, relevant aspects of organic matter mobilization and dissolved organic matter dynamics in temperate versus tropical ecosystems are examined. In the second part of the review, general and specific aspects of mineralization processes in relation to the chemistry of main SOM pools (labile versus stable SOM components) in the tropics are discussed. Amounts, distribution, and forms of nutrients in SOM, nutrient release from organic versus inorganic sources, nutrient cycling in natural and cultivated soils, and the contribution of SOM to cationic nutrition in tropical soils are reviewed. The final part of the review focuses on the main chemical factors that control CO2 evolution and denitrification processes during SOM mineralization in tropical areas.
AB - The first part of this review focuses on the chemical composition and morphological features that characterize primary and secondary organic resources for humification. The chemical pathways of decomposition and humification of SOM in tropical soils are discussed referring mainly to the chemical structural changes identified by using both solid-state 13C nuclear magnetic resonance spectroscopy (13C NMR) of bulk soil samples and liquid-state 13C NMR of chemically isolated SOM fractions. The stabilization effects and mechanisms exerted on SOM by clay minerals and sesquioxides in tropical soils are also reviewed. Successively, relevant aspects of organic matter mobilization and dissolved organic matter dynamics in temperate versus tropical ecosystems are examined. In the second part of the review, general and specific aspects of mineralization processes in relation to the chemistry of main SOM pools (labile versus stable SOM components) in the tropics are discussed. Amounts, distribution, and forms of nutrients in SOM, nutrient release from organic versus inorganic sources, nutrient cycling in natural and cultivated soils, and the contribution of SOM to cationic nutrition in tropical soils are reviewed. The final part of the review focuses on the main chemical factors that control CO2 evolution and denitrification processes during SOM mineralization in tropical areas.
KW - Chemical characterization of SOM
KW - Ecology
KW - Fertility
KW - Humification
KW - Mineralization
KW - Organic matter
KW - Soil
KW - Tropical soils
UR - http://www.scopus.com/inward/record.url?scp=0030726860&partnerID=8YFLogxK
U2 - 10.1016/S0016-7061(97)00040-2
DO - 10.1016/S0016-7061(97)00040-2
M3 - Article
AN - SCOPUS:0030726860
VL - 79
SP - 117
EP - 161
JO - GEODERMA
JF - GEODERMA
SN - 0016-7061
IS - 1-4
ER -