Soil quality indicators for different restoration stages on Amazon rainforest

Viana, R.M.; Ferraz, João Baptista Silva; Neves, Afrânio Ferreira; Vieira, Gil; Pereira, Bruno Fernando Faria

doi:10.1016/j.still.2014.01.005

Cited by 28 publications

(35 citation statements)

References 29 publications

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“…This pool of organic C might be increased by greater inputs of OM into the mineral soil and stimulation of aggregate formation, such as induced by some earthworm species and root exudation and mortality (Angst, Mueller, Cajthaml, et al, ; Bossuyt, Six, & Hendrix, ; Six et al, ; Smucker, ). Consistent with these expectations, basal area, an indirect indicator of OM input to the soil via roots and litterfall (Viana, Ferraz, Neves, Vieira, & Pereira, ), was positively correlated with the proportion of SOC in POM < 20 µm (Table ).…”

Section: Discussionsupporting

confidence: 64%

Soil organic carbon stability in forests: Distinct effects of tree species identity and traits

Angst

Mueller

Eissenstat

et al. 2019

Global Change Biology

107

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Rising atmospheric CO2 concentrations have increased interest in the potential for forest ecosystems and soils to act as carbon (C) sinks. While soil organic C contents often vary with tree species identity, little is known about if, and how, tree species influence the stability of C in soil. Using a 40 year old common garden experiment with replicated plots of eleven temperate tree species, we investigated relationships between soil organic matter (SOM) stability in mineral soils and 17 ecological factors (including tree tissue chemistry, magnitude of organic matter inputs to the soil and their turnover, microbial community descriptors, and soil physicochemical properties). We measured five SOM stability indices, including heterotrophic respiration, C in aggregate occluded particulate organic matter (POM) and mineral associated SOM, and bulk SOM δ15N and ∆14C. The stability of SOM varied substantially among tree species, and this variability was independent of the amount of organic C in soils. Thus, when considering forest soils as C sinks, the stability of C stocks must be considered in addition to their size. Further, our results suggest tree species regulate soil C stability via the composition of their tissues, especially roots. Stability of SOM appeared to be greater (as indicated by higher δ15N and reduced respiration) beneath species with higher concentrations of nitrogen and lower amounts of acid insoluble compounds in their roots, while SOM stability appeared to be lower (as indicated by higher respiration and lower proportions of C in aggregate occluded POM) beneath species with higher tissue calcium contents. The proportion of C in mineral associated SOM and bulk soil ∆14C, though, were negligibly dependent on tree species traits, likely reflecting an insensitivity of some SOM pools to decadal scale shifts in ecological factors. Strategies aiming to increase soil C stocks may thus focus on particulate C pools, which can more easily be manipulated and are most sensitive to climate change.

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Section: Discussionsupporting

confidence: 64%

Soil organic carbon stability in forests: Distinct effects of tree species identity and traits

Angst

Mueller

Eissenstat

et al. 2019

Global Change Biology

107

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“…This is one of the reasons why it is desirable to mix species from different functional groups, unless the main goal is to produce large amounts of biomass, for which pioneer and early successional species are better suited. In addition, choosing N 2 -fixing species such as I. edulis is an appropriate means to restore the soil N and C content in highly degraded areas, which is directly related to the success of forest restoration [44,45]. The rapid recovery of other nutrients, especially K, P, Ca and Mg, by mixing different species, is fundamental to provide conditions for natural regeneration in degraded areas [46].…”

Section: Discussionmentioning

confidence: 99%

Ecofunctional Traits and Biomass Production in Leguminous Tree Species under Fertilization Treatments during Forest Restoration in Amazonia

Jaquetti

Gonçalves

Ferraz

et al. 2016

Forests

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Abstract:Background: Choosing the correct species and fertilization treatments is a determining factor in the success of forest restoration. Methods: A field study was conducted in a degraded area near the Balbina hydroelectric dam in Amazonas State (AM), Brazil, to evaluate two hypotheses: (i) leguminous tree species exhibit differences in growth, leaf nutrient content, and photosynthetic nutrient use efficiencies; and (ii) differences in these characteristics depend on the fertilization treatments to which the species have been subjected. Dipteryx odorata, Inga edulis and Schizolobium amazonicum were subjected to the following treatments: (T1) unfertilized control; (T2) post-planting chemical fertilization; (T3) post-planting organic fertilization and (T4) combined chemical and organic post-planting fertilization. Results: In general, I. edulis had the highest absolute growth rate of biomass under all of the fertilization treatments. I. edulis and S. amazonicum showed the highest growth rates under the T4 treatment. D. odorata showed the greatest responses under the T2 and T4 treatments. Native leguminous trees with higher photosynthetic performance and better nutrient use efficiency exhibited greater growth and biomass production. Conclusion: The results suggest that an adequate balance between leguminous species selection and fertilization will aid in the success of forest restoration in Amazonia.

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“…These authors also reported an increase in Ca 2+ contents after burning of vegetation from nutrient uptake by crops and subsequent plant decomposition. Several authors have studied more weathered soils (Ultisols and/or Oxisols) in the Amazon (McGrath et al, 2001;Comte et al, 2012;Braz et al, 2013;Viana et al, 2014).…”

Section: Soil Fertilitymentioning

confidence: 99%

Land Use and Changes in Soil Morphology and Physical-Chemical Properties in Southern Amazon

Melo

Orrutéa

Motta

et al. 2017

Rev. Bras. Ciênc. Solo

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Many Amazonian farmers use the slash-and-burn method rather than fertilization for crop production. The aim of the present study was to evaluate changes in the morphological, physical, and chemical properties of naturally fertile Inceptisols after conversion from native forest to different uses in southern Amazonia, Brazil. Land covered by dense native forest (NF) was split into four areas of 1.0 ha each. Three areas were slashed and burned and then cultivated for 11 years with coffee (CO), secondary forest (SF), and pasture (PA). Four soil profiles were sampled in each treatment (four uses × four replicates). The mean value distribution of each physical and chemical analysis was determined for different depths, and standard error bars were placed to display significant differences among treatments. Results showed that morphology and physical properties were negatively affected after the establishment of PA and CO: a reduction in the thickness of the A horizon and in aggregate stability, a decrease in total porosity and macroporosity, and an increase in aggregate size and bulk density. Soil bulk density (SBD), geometric mean diameter of water-stable aggregates (GMD), and microporosity (SMi) were higher in soil under pasture as a consequence of more intense soil surface compaction. Native and secondary forests were the only treatments that showed granular structures in the A horizon. Significant differences between native forest and secondary forest were mainly found in the top soil layer for total porosity (STP) (NF>SF), macroporosity (SMa) (NF>SF), SBD (NF>SF) and GMD (SF>NF). Phosphorus contents in the A horizon increased from 6.2 to 21.5 mg kg -1 in PA and to 27.2 mg kg -1 in SF. Soil under coffee cultivation exhibited the lowest levels of Ca 2+ and sum of bases in surface horizons. In all slash-and-burn areas there was a reduction in the C stock (Mg ha -1 ) of the A horizon: native forest 6.3, secondary forest 4.5, pasture 3.3, and coffee 3.1.

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Soil quality indicators for different restoration stages on Amazon rainforest

Cited by 28 publications

References 29 publications

Soil organic carbon stability in forests: Distinct effects of tree species identity and traits

Soil organic carbon stability in forests: Distinct effects of tree species identity and traits

Ecofunctional Traits and Biomass Production in Leguminous Tree Species under Fertilization Treatments during Forest Restoration in Amazonia

Land Use and Changes in Soil Morphology and Physical-Chemical Properties in Southern Amazon

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