scholarly journals Investigation on carbon sequestration capacity of typical subtropical evergreen broad-leaved forest in Wuyi Mountain National Nature Reserve

2021 ◽  
Vol 248 ◽  
pp. 02044
Author(s):  
Qiugen Zhang ◽  
Hongli Wang ◽  
Yuan Ding ◽  
Jian Li
Keyword(s):  
Organic Carbon ◽  
Carbon Content ◽  
Carbon Storage ◽  
Nature Reserve ◽  
Organic Carbon Content ◽  
Carbon Density ◽  
Schima Superba ◽  
National Nature Reserve ◽  
Vegetation Layer ◽  
Cyclobalanopsis Glauca

Three typical substropical evergreen broad-leaved forests (Castanopsis eyrei, Schima superba and Cyclobalanopsis glauca) in Wuyi Mountain National Nature Reserve of Jiangxi Province were selected to investigate its carbon sequestration capacity. The biomass and soil bulk density of sample investigation were get by setting sample investigation, field quadrat sampling, indoor sample making, experimental analysis testing, data statistics and analysis. The organic carbon content of vegetation layer (arbor layer, shrub layer and herbaceous layer, litter layer) and soil layer (0-10cm, 10-20cm, 20-30cm, 30-50cm and 50-100cm) were also get. The carbon density and carbon storage of subtropical evergreen broad-leaved forests vegetation and soil were estimated which including Castanopsis eyrei, Schima superba and Cyclobalanopsis glauca. The investigation results had shown that: The average organic carbon content of each vegetation layer in the investigation plot (400 m2) of Wuyi Mountain National Nature Reserve was arbor layer (54.07%)> shrub layer (52.8%)> herbaceous layer (47.5%), in which the average organic carbon content of the three subtropical evergreen broad-leaved forests in the arbor layer was close 52.97% to 54.87% and the total average content was 54.07%. The average carbon density of the forest vegetation layer was 178.3587t/hm2, the average carbon density of the vegetation layer was arbor layer (176.0273t/hm2)> shrub layer (1.3043t/hm2)> litter layer (0.8144t/hm2)> herbaceous layer (0.2127t/hm2); the average carbon density of each forest species was Castanopsis eyrei (213.5141t/hm2)> Schima superba (168.9069t/hm2)> Cyclobalanopsis glauca (152.6551t/hm2). Investigation sample of subtropical evergreen broad-leaved forest (400 m) in Wuyi Mountain National Nature Reserve, Jiangxi Province2 The average soil bulk density of each soil layer cm 0-100 g/cm was 0.868-1.816 g/cm3 both soil organic carbon content and soil carbon density decreased with the increase of soil depth. The average organic carbon content of each soil layer was between 3.75% and 12.48%, and the average soil carbon density was between 62.85t/hm2 and 146.14t/hm2. The average total carbon density of the soil in the investigated sample plots was 754.77t/hm2, of which the average soil carbon density in investigation sample plots in Castanopsis eyrei, Schima superba and Cyclobalanopsis glauca was 911.49t/hm2, 762.56t/hm2 and 543.22t/hm2 respectively. The average carbon storage of the investigation sample plot (400m2) in Jiangxi Wuyi Mountain National Nature Reserve were Castanopsis eyrei forest (45.0002t) >Cyclobalanopsis glauca forest (36.6087t) > Schima superba forest (28.4850t), the average soil carbon storage(30.1908t) was 4.23 times the average carbon storage(7.1314t).

Soil Organic Carbon Pools under Different Land Use Patterns along Dongjiang River Valley of Guangdong Province, China

2012 ◽  
Vol 550-553 ◽  
pp. 2094-2099
Author(s):  
Yan Zhang ◽  
Lu Zhang ◽  
Dong Sun ◽  
Zhi Yao Su
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Coniferous Forest ◽  
Natural Forest ◽  
Organic Carbon Content ◽  
Carbon Density ◽  
Land Use Patterns ◽  
Schima Superba ◽  
Use Patterns ◽  
Abandoned Land

Soil organic carbon (SOC) content and density (SOCD) were studied under six land use patterns of Natural forest, Schima superba plantation, Coniferous forest, Bamboo forest, Orchard, and Abandoned land in the Dongjiang River valley of Guandong province, China. The results showed that surface soil (0~25 cm) organic carbon content and soil organic carbon density had significant difference (P -1) > Schima superba planted forest (21.1±0.79 g•kg-1) > Bamboo (20.9±0.53 g•kg-1) > Coniferous forest (15.65±0.93 g•kg-1) > Orchard (15.22±0.61 g•kg-1) > Abandoned land (8.69±0.38 g•kg-1), and Natural forest (67.16±2.31 kg•m-2) > Bamboo (60.08±1.53 kg•m-2) > Schima superba plantation (52.8±1.86 kg•m-2) > Coniferous forest (47.17±2.66 kg•m-2) > Orchard (43.03±1.56 kg•m-2) > Abandoned land (31.48±1.2 kg•m-2), respectively. Natural forest was the highest in both soil organic carbon content and soil organic carbon density, and Abandoned land the lowest. The findings suggested that a close-to-nature way of afforestation and forest management played an important role in increasing forest carbon sinks.

scholarly journals Organic carbon inventories in natural and restored Ecuadorian mangrove forests

2013 ◽  
Author(s):  
Amanda G DelVecchia ◽  
John F Bruno ◽  
Larry K Benninger ◽  
Marc Alperin ◽  
Ovik Banerjee ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Content ◽  
Carbon Storage ◽  
Organic Matter Content ◽  
Carbon Stocks ◽  
Organic Carbon Content ◽  
Mangrove Forests ◽  
Storage Potential ◽  
Sediment Carbon

Because mangroves can capture and store organic carbon, their protection and restoration is an obvious component of climate change mitigation. However, there are few empirical measurements of long-term carbon storage in mangroves or of how storage varies across environmental gradients. The context dependency of this process combined with geographically limited field sampling has made it difficult to generalize regional and global rates of mangrove carbon sequestration. This has in turn hampered the inclusion of sequestration by mangroves in carbon cycle models and in carbon offset markets. The purpose of this study was to estimate the relative carbon capture and storage potential in natural and restored mangrove forests. We measured depth profiles of soil organic carbon content in 72 cores collected from six sites (three natural, two restored, and one afforested) surrounding Muisne, Ecuador. Samples up to 1 m deep were analyzed for organic matter content using loss-on-ignition and values were converted to organic carbon content using an accepted ratio of 1.72 (g/g). Results suggest that average soil carbon storage is 0.055 ± 0.002 g∙cm-3 (11.3 ± 0.8% carbon content by dry mass, mean ± 1 SE) up to 1 m deep in natural sites, and 0.058 ± 0.002 g∙cm-3 (8.0 ± 0.3%) in restored sites. These estimates are concordant with published global averages. Evidence of equivalent carbon stocks in restored and afforested mangrove patches emphasizes the carbon sink potential for reestablished mangrove systems. We found no relationship between sediment carbon storage and aboveground biomass, forest structure, or within-patch location. Our results demonstrate the long-term carbon storage potential of natural mangroves, high effectiveness of mangrove restoration and afforestation, a lack of predictability in carbon storage strictly based on aboveground parameters, and the need to establish standardized protocol for quantifying mangrove sediment carbon stocks.

scholarly journals Organic carbon inventories in natural and restored Ecuadorian mangrove forests

2013 ◽  
Author(s):  
Amanda G DelVecchia ◽  
John F Bruno ◽  
Larry K Benninger ◽  
Marc Alperin ◽  
Ovik Banerjee ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Content ◽  
Carbon Storage ◽  
Organic Matter Content ◽  
Carbon Stocks ◽  
Organic Carbon Content ◽  
Mangrove Forests ◽  
Storage Potential ◽  
Sediment Carbon

Because mangroves can capture and store organic carbon, their protection and restoration is an obvious component of climate change mitigation. However, there are few empirical measurements of long-term carbon storage in mangroves or of how storage varies across environmental gradients. The context dependency of this process combined with geographically limited field sampling has made it difficult to generalize regional and global rates of mangrove carbon sequestration. This has in turn hampered the inclusion of sequestration by mangroves in carbon cycle models and in carbon offset markets. The purpose of this study was to estimate the relative carbon capture and storage potential in natural and restored mangrove forests. We measured depth profiles of soil organic carbon content in 72 cores collected from six sites (three natural, two restored, and one afforested) surrounding Muisne, Ecuador. Samples up to 1 m deep were analyzed for organic matter content using loss-on-ignition and values were converted to organic carbon content using an accepted ratio of 1.72 (g/g). Results suggest that average soil carbon storage is 0.055 ± 0.002 g∙cm-3 (11.3 ± 0.8% carbon content by dry mass, mean ± 1 SE) up to 1 m deep in natural sites, and 0.058 ± 0.002 g∙cm-3 (8.0 ± 0.3%) in restored sites. These estimates are concordant with published global averages. Evidence of equivalent carbon stocks in restored and afforested mangrove patches emphasizes the carbon sink potential for reestablished mangrove systems. We found no relationship between sediment carbon storage and aboveground biomass, forest structure, or within-patch location. Our results demonstrate the long-term carbon storage potential of natural mangroves, high effectiveness of mangrove restoration and afforestation, a lack of predictability in carbon storage strictly based on aboveground parameters, and the need to establish standardized protocol for quantifying mangrove sediment carbon stocks.

scholarly journals Caracterização da matéria orgânica sedimentar na Baía de Guanabara através de marcadores moleculares

2003 ◽  
Vol 26 ◽  
pp. 79-91
Author(s):  
Renato S. Carreira ◽  
Angela L.R. Wagener
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Primary Production ◽  
Carbon Content ◽  
Carbon Storage ◽  
Sediment Cores ◽  
Carbon Fluxes ◽  
Organic Carbon Content ◽  
Guanabara Bay ◽  
Sewage Discharge

The present work aimed at investigating the effects of growing eutrophic conditions and soil occupation on the carbon storage in Guanabara Bay. Sterols in dated sediment cores were used to characterize the sources of organic matter to the bay. Dinosterol was the most abundant amongst the measured sterols reaching 64.7 % of the total. Coprostanol, a fecal sterol, was present in concentrations as high as 40 µg g-1 in areas of intensive sewage discharge. These results are in agreement with the known elevated primary production in the bay and with the severe eutrophic conditions. The calculated carbon fluxes using the organic carbon content and the sedimention rates range between 50 g C m-2 year-1 and 500g C m-2 year-1 during the last 100 years.

Space-time monitoring of soil organic carbon content across a semi-arid region of Australia

2021 ◽  
Vol 24 ◽  
pp. e00367
Author(s):  
Patrick Filippi ◽  
Stephen R. Cattle ◽  
Matthew J. Pringle ◽  
Thomas F.A. Bishop
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Content ◽  
Arid Region ◽  
Space Time ◽  
Organic Carbon Content ◽  
Soil Organic Carbon Content ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Assessment of Carbon Density in Natural Mountain Forest Ecosystems at Northwest China

2021 ◽  
Vol 18 (4) ◽  
pp. 2098
Author(s):  
Li Dai ◽  
Yufang Zhang ◽  
Lei Wang ◽  
Shuanli Zheng ◽  
Wenqiang Xu
Keyword(s):  
Carbon Content ◽  
Carbon Storage ◽  
Forest Ecosystems ◽  
Soil Layer ◽  
Northwest China ◽  
Biomass Carbon ◽  
Forest Age ◽  
Carbon Density ◽  
Old Growth Forest ◽  
Content Ratio

The natural mountain forests in northwest China are recognized as a substantial carbon pool and play an important role in local fragile ecosystems. This study used inventory data and detailed field measurements covering different forest age groups (young, middle-aged, near-mature, mature, old-growth forest), structure of forest (tree, herb, litter and soil layer) and trees (leaves, branches, trunks and root) to estimate biomass, carbon content ratio, carbon density and carbon storage in Altai forest ecosystems. The results showed that the average biomass of the Altai Mountains forest ecosystems was 126.67 t·hm−2, and the descending order of the value was tree layer (120.84 t·hm−2) > herb layer (4.22 t·hm−2) > litter layer (1.61 t·hm−2). Among the tree parts, trunks, roots, leaves and branches accounted for 50%, 22%, 16% and 12% of the total tree biomass, respectively. The average carbon content ratio was 0.49 (range: 0.41–0.52). The average carbon density of forest ecosystems was 205.72 t·hm−2, and the carbon storage of the forest ecosystems was 131.35 Tg (standard deviation: 31.01) inside study area. Soil had the highest carbon storage (65.98%), followed by tree (32.81%), herb (0.78%) and litter (0.43%) layers. Forest age has significant effect on biomass, carbon content ratio, carbon density and carbon storage. The carbon density of forest ecosystems in study area was spatially distributed higher in the south and lower in north, which is influenced by climate, topography, soil types and dominant tree species.

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