Effects of 34-year-old Pinus taeda and Eucalyptus grandis plantations on soil carbon and nutrient status in former miombo forest soils

Guedes, Benard S.; Olsson, Bengt A.; Karltun, Erik

doi:10.1016/j.gecco.2016.09.005

Cited by 23 publications

(17 citation statements)

References 51 publications

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“…Total SOC accumulation rate in our study was comparable to the effects of 34-year-old Pinus taeda and Eucalyptus grandis plantations on soil carbon in former miombo forest soils. After 34 years of plantation, net accumulation of SOC was 1.41 t C ha −1 yr −1 in P. taeda and 1.53 t C ha −1 yr −1 in E. grandis stands [21]. But the total SOC accumulation rate in this study was higher than that of the 24-year-old P .…”

Section: Discussionmentioning

confidence: 67%

Rapid Sequestration of Ecosystem Carbon in 30-year Reforestation with Mixed Species in Dry Hot Valley of the Jinsha River

Gong

et al. 2019

IJERPH

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Reforestation plays an important role in the carbon cycle and climate change. However, knowledge of ecosystem carbon sequestration through reforestation with mixed species is limited. Especially in dry hot valley of the Jinsha River, no studies cover total ecosystem carbon sequestration level in mature mixed plantations for a limited area of mixed plantations and difficulty in the sampling of plant roots and deep soil. In this study, carbon sequestration of seven mixed plantations of different ages in dry hot valley of the Jinsha River was investigated with analogous sites method. The results are as follows: 1) Deep soil organic carbon (SOC) storage significantly increased with stand age (p = 0.025), possibly due to fine root exudates and dissolved organic carbon transportation into deep soil and retention. 2) Total biomass carbon storage in the 30-year-old mixed plantation was 77.78 t C ha−1, 54 times reference wasteland and 9 times reference natural recovery shrub-grassland. However, total biomass carbon storage of 30-year-old mixed plantation was insignificantly lower than that of reference natural forest (p = 0.429). After 30 years of reforestation, plantation biomass carbon storage recovered to reference level, and its sequestration rate was 2.54 t C ha−1 yr−1. 3) The total ecosystem carbon storage of 30-year-old mixed plantation was 185.50 t C ha−1, 2.38 times reference wasteland, 2.29 times reference natural recovery shrub grassland, and 29% lower than reference natural forest. It indicated that niche complementary, good stand structure, and characteristics of dominant species Leucaena leucocephala in mixed plantations facilitate more rapid carbon sequestration, especially biomass carbon in the dry hot valley.

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Section: Discussionmentioning

confidence: 67%

Rapid Sequestration of Ecosystem Carbon in 30-year Reforestation with Mixed Species in Dry Hot Valley of the Jinsha River

Gong

et al. 2019

IJERPH

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“…Soil C presents a lesser studied but important carbon pool in the miombo ecoregion. Studies show that the SOC stocks in miombo forests account for significant amounts of total C stored in the ecosystem, storing up to 50 -80% of total C [9,30]. The ranges for regrowth and cropland SOC stocks indicate that the two datasets cover a similar range of underlying variability.…”

Section: Discussionmentioning

confidence: 99%

“…In the assessed literature, soil data were estimated at various depths ranging from 2.5 cm to 150 cm belowground and often presented as stratified by soil layers or horizon. However, some studies provided information only on pooled SOC stocks, i.e., for the entire sampling depth considered in the study design rather than stratified by layers [9,18]. For these studies, only the total SOC stocks were recorded in the database.…”

Section: Soil Carbon Stocksmentioning

confidence: 99%

Carbon Stocks in Miombo Woodlands: Evidence From Over 50 Years

Bulusu¹,

Martius²,

Clendenning³

2021

Preprint

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Miombo woodlands are extensive dry forest ecosystems in central and southern Africa covering ≈2.7 million km2. Despite their vast expanse and global importance for carbon storage, the long-term carbon stocks and dynamics have been poorly researched. The objective of this paper is to present and summarize the evidence gathered on above- and belowground (root and soil) carbon stocks of miombo woodlands from the 1960s to mid-2018 through a review. We analyzed data to answer: (1) What is the range of aboveground and belowground carbon stocks found in miombo woodlands over the last six decades? (2) Are there differences in carbon stocks based on land-management categories? (3) Does precipitation influence aboveground carbon stocks in old-growth miombo? (4) Do differences in cover type, age and region influence carbon stocks? (5) How does previous land-use affect carbon stocks in re-growth miombo? A literature review protocol was used to identify 56 publications from which quantitative data on aboveground and soil carbon pools were extracted. We found that the mean aboveground carbon stock in old-growth miombo was 30.83±16.76 Mg C ha-1 (range 1.48—107.24 Mg ha-1). Old-growth miombo had an average calculated root carbon stock of 16.49±9.18 Mg C ha-1 (range 0.8—57.81 Mg ha-1). Soil carbon stocks in old-growth miombo varied widely, between 8.75 and 134.6 Mg C ha-1 while in re-growth miombo they varied between 10.73 and 52.2 Mg C ha-1. It must be noted these soil data are given only for information; they inconsistently refer to varying soil depths and are thus difficult to interpret. The wide range reported suggests a need for further studies, much more systematic in methods and reporting. Other limitations of the dataset include the lack of systematic sampling and lack of data in some countries, viz. Angola and Democratic Republic of the Congo.

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“…Evidence from literature suggests the potential of Eucalyptus to reduce soil erosion (Grewal et al, 1992;Kidanu, 2004), sequester carbon in the soil in long term (Silva, 2012) and restore degraded lands through increasing the soil carbon by 37 g m -2 yr -1 (Lemenih, 2006). A study conducted in central Mozambique revealed that plantations of E. grandis increased total soil organic carbon stocks (0-50 cm) and N stocks in the top 10 cm (Guedes et al, 2016). On the contrary, negative effect of Eucalyptus plantation on soil TN, exchangeable Ca and soil moisture content (Alemie, 2009), and P stocks (Alemie, 2009;Guedes et al, 2016) was reported.…”

Section: Introductionmentioning

confidence: 99%

Soil physicochemical properties under eucalyptus tree species planted in alley maize cropping agroforestry practice in Decha Woreda, Kaffa zone, southwest Ethiopia

Alemayhu

Yakob²

2021

Int. J. Agril. Res. Innov. & Tech.

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Different studies have shown that the effect of eucalyptus trees on soil physicochemical properties is variable, which indicates that more investigations that focus on different specific geographical locations and eucalyptus tree species are required. The objectives of this study was to evaluate the status of soil nutrients under four eucalyptus tree species planted in hedgerow system in comparison with that in its adjacent open land. To achieve these objectives, soil samples were taken from a soil depth of 0-20 cm from 15-20 spots by using auger and composited for respective treatments. Each soil samples analyzed at Teppi soil laboratory following standard procedures. Analysis of variance (ANOVA) and treatments separation were made by using Least Significance Difference (LSD) at 95% probability level. The analysis result indicated that there were no significance differences between Eucalyptus tree species and its adjacent open land in the level of soil nutrients (total N, available P, pH, OM, soil moisture and OC) (p<0.05). The only significant difference recorded between Eucalyptus tree species and its adjacent open land in the level of sand percentage whereas non-significant difference was noticed between the treatments on the level of silt and clay percentage in the study. Finally, the results indicate that the eucalyptus tree species established in hedgerow system on clay soil in high rainfall area have no significant impact on soil physicochemical properties under short rotation period of the tree species. Int. J. Agril. Res. Innov. Tech. 10(2): 7-14, December 2020

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Effects of 34-year-old Pinus taeda and Eucalyptus grandis plantations on soil carbon and nutrient status in former miombo forest soils

Cited by 23 publications

References 51 publications

Rapid Sequestration of Ecosystem Carbon in 30-year Reforestation with Mixed Species in Dry Hot Valley of the Jinsha River

Rapid Sequestration of Ecosystem Carbon in 30-year Reforestation with Mixed Species in Dry Hot Valley of the Jinsha River

Carbon Stocks in Miombo Woodlands: Evidence From Over 50 Years

Soil physicochemical properties under eucalyptus tree species planted in alley maize cropping agroforestry practice in Decha Woreda, Kaffa zone, southwest Ethiopia

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