Forest-to-pasture conversion influences on soil organic carbon dynamics in a tropical deciduous forest

García‐Oliva, Felipe; Casar, Isabel; Luque, P.A.; Maass, J. Manuel

doi:10.1007/bf00627754

Cited by 68 publications

(43 citation statements)

References 34 publications

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“…The silt and clay fraction had the narrowest C/N ratios, suggesting the most humified state and potentially the largest degree of microbial origin. The increasing degree of humification with decreasing fraction size accords with the results of many previous studies (Elliott, 1986;Oades et al, 1987;Beare et al, 1994;García-Oliva et al, 1994).…”

Section: Land Use and Management-induced Changes Within The Tested Fosupporting

confidence: 92%

Using light fraction and macroaggregate associated organic matters as early indicators for management-induced changes in soil chemical and biological properties in adjacent native and plantation forests of subtropical Australia

Chen

et al. 2008

Geoderma

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Land use and management Forest Soil chemical and biological processes Soil physical structure causes differential accessibility of soil organic matter (SOM), including carbon (C) and nitrogen (N) pools, to decomposer organisms and is an important determinant of SOM storage. Physical fractionation method of SOM in conjunction with elemental as well as isotopic analyses (C, N, δ 13 C, δ 15 N) of those soil fractions are used in this study to determine the land use and management-induced changes of SOM and associated processes in three adjacent sites of native forest (NF), first (1R) and second rotation (2R, including tree planting row (2R-T) and windrow of harvest residues (2R-W)) of hoop pine plantations in southeast Queensland, Australia. The results suggest that there is a greater accumulation of C and N in the light fraction (LF) of NF site than that of plantation sites (1R and 2R), and the C and N losses following conversion from mixed species NF to the single-species plantation are attributed to the reduction in C and N stocks for all physical fractions separated by wet sieving. In contrast, the C and N losses induced by the rotation practices (e.g., between 1R and 2R-T) are attributed to the C and N decreases in the LF and macroaggregates (250-2000 µm) only. The C and N increases upon the residue management (e.g., between 2R-W and 2R-T) are primarily attributed to the C and N increases in the LF and macroaggregates as well. Coupled with 30 soil chemical and biological parameters obtained in our previous studies, further principal component and multivariable regression analyses were conducted and the results showed that both the LF and macroaggregates were highly related to the status of C and N pools, the processes of N transformation and soil respiration, and the diversity of microbial communities, and thus could serve as diagnostic SOM fractions responsible for the changes of soil properties and processes within the tested ecosystem induced by the land uses and management practices. Knowledge of the interactive relationships between aggregate classes within SOM and soil chemical and biological processes in this study represents a further step towards diagnostically measuring and understanding important soil C and N processes in response to the land use and management changes in the soil ecosystems such as forests in subtropical Australia.

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Section: Land Use and Management-induced Changes Within The Tested Fosupporting

confidence: 92%

Using light fraction and macroaggregate associated organic matters as early indicators for management-induced changes in soil chemical and biological properties in adjacent native and plantation forests of subtropical Australia

Chen

et al. 2008

Geoderma

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“…Forest-to-pasture conversion results in 77% and 82% losses of C and N, respectively, from aboveground biomass . As a result of management, soil organic matter decomposes at rates of 2.9 Mg • ha -1 • yr -1 (García-Oliva et al 1994). Soil nutrient loss associated with erosion accelerates several orders of magnitude up to 179 and 24 kg • ha -1 • yr -1 of N and P, respectively (Maass et al 1988), and soil aggregates deteriorate, loosing their stability .…”

Section: The Most Important Servicesmentioning

confidence: 99%

Ecosystem Services of Tropical Dry Forests: Insights from Long-term Ecological and Social Research on the Pacific Coast of Mexico

Maass¹,

Balvanera²,

Castillo³

et al. 2005

E&S

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241

153

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“…The high levels of soil C in young pastures may originate from the original forest. Several authors have reported an increase in soil C directly following forest clearing due to the decomposition of remaining litter and root material [Garcia-Oliva et al, 1994;McAllister et al, 1998]. After several years under pasture, decomposition of soil C and a low input of litter result in decreasing carbon levels, which are lower than the original level at pasture establishment.…”

Section: Landscape Variation In the Response Of Soil C Following Forementioning

confidence: 99%

Quantification of carbon sequestration in soils following pasture to forest conversion in northwestern Ecuador

Koning

Veldkamp

López-Ulloa

2003

Global Biogeochemical Cycles

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[1] We studied the changes in soil carbon contents when pastures are converted to either secondary forest or plantation forest in north-western Ecuador. At 40 sites within the region, paired pasture and forest plots were compared. We related the observed soil carbon concentrations, stocks, and changes (in the 0-0.25 m and 0.25-0.5 m layers) to land use history, climate, and soil characteristics. Variation in carbon concentrations over sites in volcanic soils could be well predicted for both pastures (R 2 = 0.96) and forests (R 2 = 0.93) on the basis of soil mineralogy, while for sedimentary soils, clearly less variation could be explained (R 2 = 0.14 for pastures and 0.39 for forests). The dominant factor explaining changes in carbon stocks following pasture to forest conversion was pasture age. Forests, paired with pastures less than 10 years old, had on average 9.3 Mg ha À1 less soil carbon than the pastures, while forests paired with pastures between 20 and 30 years old had on average 18.8 Mg ha À1 more soil carbon and forest paired with pastures older than 30 years had on average 15.8 Mg ha À1 more carbon than the pastures. In this region, reforestation of old pastures will generally lead to an increase of soil carbon stocks. These results can be used for optimal site selection for carbon sequestration projects and for including soil carbon in the estimated benefits of these projects.

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Forest-to-pasture conversion influences on soil organic carbon dynamics in a tropical deciduous forest

Cited by 68 publications

References 34 publications

Using light fraction and macroaggregate associated organic matters as early indicators for management-induced changes in soil chemical and biological properties in adjacent native and plantation forests of subtropical Australia

Using light fraction and macroaggregate associated organic matters as early indicators for management-induced changes in soil chemical and biological properties in adjacent native and plantation forests of subtropical Australia

Ecosystem Services of Tropical Dry Forests: Insights from Long-term Ecological and Social Research on the Pacific Coast of Mexico

Quantification of carbon sequestration in soils following pasture to forest conversion in northwestern Ecuador

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