Modelling vegetation development and carbon accumulation during primary forest succession in drift sands

2010 ◽  
pp. 315-322
Keyword(s):  
Forest Succession ◽  
Carbon Accumulation ◽  
Primary Forest ◽  
Vegetation Development

scholarly journals Keragaman dan Pengendalian Tumbuhan Invasif di KHDTK Samboja, Kalimantan Timur (Diversity and Management of Invasive Plants in Samboja Research Forest, Kalimantan Timur)

2020 ◽  
Vol 8 (3) ◽  
pp. 351
Author(s):  
Bina Swasta Sitepu
Keyword(s):  
Invasive Species ◽  
Plant Species ◽  
Invasive Plants ◽  
Invasive Plant ◽  
Forest Succession ◽  
Acacia Mangium ◽  
Forest Area ◽  
Primary Forest ◽  
Secondary Forests ◽  
Invasive Plant Species

Historically, and based on the latest conditions, Samboja Research Forest has a fairly high vulnerability to the presence of invasive species that can interfere with ecosystem stability and forest succession. However, data collection and risk assessment of invasive species have not been conducted in the forest area. The study was carried out to support the management of Samboja Research Forest, particularly in controlling invasive species. The study was conducted with exploration techniques in open areas, secondary forests, and primary forests. The density and frequency data of invasive plants were obtained using random plots in secondary and primary forest areas. The results showed the presence of 52 invasive plant species in the Samboja Research Forest area with dominance by shrubs and herbs. Based on plants distribution and density, four crucial invasive plant species in Samboja Research Forest were identified, namely: Acacia mangium, Spathodea campanulata, Miconia crenata, and Piper aduncum. The management of invasive species was carried out in two stages, short term, through manual weeding, and in the long term, with the prevention, eradication, and periodic risk assessment.Keywords: invasive alien species, Kalimantan, eradication, Spathodea campanulata

scholarly journals IMPACT OF EARTHWORMS OF DIFFERENT MORPHO-ECOLOGICAL GROUPS ON CARBON ACCUMULATION IN FOREST SOILS

2021 ◽  
Vol 1 (4) ◽  
pp. 1-15
Author(s):  
A.P. Geraskina ◽  
Keyword(s):  
Nitrogen Content ◽  
Soil Carbon ◽  
Forest Soils ◽  
Forest Succession ◽  
Carbon Accumulation ◽  
Soil Parameters ◽  
Moscow Oblast ◽  
Total Biomass ◽  
Ecological Groups ◽  
The Impact

To date, forest ecology has not made any clear conclusions regarding the impact of large saprophagous invertebrates such as earthworms on soil carbon dynamics. Some authors claim that earthworm activities result in decreased carbon accumulation. Other studies show that earthworms contribute to soil carbon accumulation. At the same time, many studies do not take into account the differences between trophic and digging activity of different morpho-ecological groups of earthworms in different soil horizons. The objective of this study was to carry out differentiated assessment of the impact of different morpho-ecological groups of earthworms on carbon accumulation and correspondent soil parameters (nitrogen content and С/N ratio) throughout the change in forest succession status. Field operations were performed in the spring and summer of 2016 and 2018 in three regions: Bryansk Oblast (Bryansk Forest reserve), Moscow Oblast (Moskva–Oka plain, Valuyevsky urban forest) and Northwest Caucasus (Krasnodar Krai, Apsheron forestry; Republic of Adygeya, Caucasian Biosphere Reserve). Three main stages of coniferous-broadleaf forest restoration after clear cuttings were identified in each region. Three test plots 50х50 m were allocated for each stage; geobotanical and soil descriptions as well as earthworm registration were carried out on each plot. It was found out that during the change in forest succession status the species composition and the set of morpho-ecological groups of earthworms became more complicated, but there was no successive replacement of any groups with others. Ambiguous effects of different morpho-ecological groups of earthworms on carbon accumulation in forest soils were revealed. Negative correlation was found between the total biomass of earthworms feeding on the soil surface (epigeic, epi-endogeic and anecic species) and litter store. In the humus horizon, the biomass of epi-endogeic species was positively correlated with the content of carbon. C/N ratio and nitrogen content are unidirectionally correlated with the biomass of earthworms in the horizons of their activity: with an increase in the biomass of earthworms of different morpho-ecological groups, the C/N ratio decreases, and the nitrogen content increases.

scholarly journals Soil chemical attributes in a high biodiversity silvopastoral system

2018 ◽  
Vol 67 (4) ◽  
pp. 486-493
Author(s):  
Luiz Fernando Zin Battisti ◽  
Abdon Luiz Schmitt Filho ◽  
Arcângelo Loss ◽  
Paulo Antonio De Almeida Sinisgalli
Keyword(s):  
Organic Carbon ◽  
Total Organic Carbon ◽  
Total Nitrogen ◽  
Production Efficiency ◽  
Secondary Forest ◽  
Carbon Accumulation ◽  
The Other ◽  
Primary Forest ◽  
Silvopastoral System ◽  
Chemical Attributes

The use of conservation managements such as the silvopastoral system, and the Voisin rational grazing system have been excellent alternatives to increase animal welfare and production efficiency and improve soil chemical attributes of degraded pastures. Therefore, the objective of this work was to evaluatethe effect of a High Biodiversity Silvopastoral System (SPSNUCLEUS) on the soil chemical attributes through comparisons with soils of a Management Intensive Grazing without trees (MIG), primary forest, and secondary forest areas. Total organic carbon, total nitrogen, pH, Al, H+Al, Ca, Mg, K, and P were evaluated after four years of implementation of SPSNUCLEUS. Soil samples from the layers 0-5, 5-10, 10-20, 20-30, and 30-40 cm were collected in all areas—SPSNUCLEUS, MIG, primary forest, and secondary forest. SPSNUCLEUS had better soil quality, with increased P and K contents (0-30 cm), compared to the other areas, and higher total organic carbon,and total nitrogen contents (5-30 cm) when compared to the MIG and secondary forest areas. The soil carbon accumulation capacity in the SPSNUCLEUS area in the layers of 5-10 cm and 20-40 cm was similar to that of the primary forest area, and higher to those of the other areas. SPSNUCLEUS proved to be a promising system to improve the soil chemical attributes of pastures.

Shifts in microbial metabolic pathway for soil carbon accumulation along subtropical forest succession

2021 ◽  
pp. 108335
Author(s):  
Tiantian Zheng ◽  
Hongtu Xie ◽  
Grant L. Thompson ◽  
Xuelian Bao ◽  
Fangbo Deng ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Metabolic Pathway ◽  
Forest Succession ◽  
Subtropical Forest ◽  
Carbon Accumulation ◽  
Soil Carbon Accumulation

Tropical secondary forests

1995 ◽  
Vol 19 (2) ◽  
pp. 159-172 ◽  
Author(s):  
R.T. Corlett
Keyword(s):  
Tropical Forest ◽  
Forest Succession ◽  
Secondary Forest ◽  
Selective Logging ◽  
Regulatory Function ◽  
Primary Forest ◽  
Secondary Forests ◽  
Surrounding Landscape ◽  
A Site ◽  
Forest Lands

The clearance, cultivation and abandonment of tropical forest lands has resulted in a rapid increase in the area of tropical secondary forests. Despite their growing extent, however, these forests have received relatively little attention from ecologists, foresters and conservationists. In this article the use of the term 'secondary forest' is restricted to forests which have reoccupied a site after clearance. Forests resulting from selective logging and other disturbances which permit most plant species to survive on the site are excluded. The literature on tropical forest succession is reviewed, showing the importance of the type, intensity and scale of the disturbance, the nature of the surrounding landscape and the composition of the surviving disperser fauna. The value of tropical secondary forests is compared to primary forest, with regards to regulatory function, commercial value and conservation significance. Finally, major research needs are briefly discussed.

Carbon sequestration in a chronosequence of Scots pine stands in a reclaimed opencast oil shale mine

2009 ◽  
Vol 39 (8) ◽  
pp. 1507-1517 ◽  
Author(s):  
Helen Karu ◽  
Robert Szava-Kovats ◽  
Margus Pensa ◽  
Olevi Kull
Keyword(s):  
Carbon Sequestration ◽  
Scots Pine ◽  
Oil Shale ◽  
Forest Succession ◽  
Carbon Accumulation ◽  
Total Carbon ◽  
Litter Production ◽  
Soil Profiles ◽  
Degraded Land ◽  
Tree Layer

Ecosystems that develop on mine spoil can serve as significant sinks for CO2. The aim of this study was to estimate the rate of carbon accumulation and its distribution along forest ecosystem partitions in young Scots pine ( Pinus sylvestris L.) plantations in the Narva oil shale opencast, Estonia. The tree layer was measured in 2004 in 13 stands afforested with 2-year-old seedlings during 1968 to 1994. Three stands (afforested in 1990, 1983, and 1968) were selected for detailed analysis of the carbon sequestration. Soil profiles were sampled in these stands in 2005. Radiocarbon analysis combined with a simple model of litter production was used to differentiate between plant-derived recent carbon and carbon stemming from fragments of oil shale. Total carbon accumulated since afforestation in vegetation, forest floor, and A horizon was 7.8 t·ha–1 in the stand established in 1990, 34.5 t·ha–1 in that established in 1983, and 133.4 t·ha–1 in that established in 1968. Most of the sequestered carbon was allocated to tree stems; their portion increasing with age from 28% to 51%. The portion of recent soil organic carbon increased from 5% to 23%, which shows that soils contribute significantly to carbon accumulation during early forest succession on degraded land.

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