scholarly journals Estimation of carbon stock in seagrass communities in Central Tapanuli

2021 ◽  
Vol 944 (1) ◽  
pp. 012064
Author(s):  
Z A Harahap ◽  
Khairunnisa ◽  
I E Susetya ◽  
Y P Rahayu
Keyword(s):  
Carbon Stock ◽  
Standing Stock ◽  
Seagrass Beds ◽  
Biomass Carbon ◽  
Above Ground Biomass ◽  
Loss On Ignition ◽  
Ground Biomass ◽  
Seagrass Ecosystem ◽  
Seagrass Biomass ◽  
Below Ground

Abstract This study aims to determine the carbon stock in seagrass communities in Central Tapanuli, North Sumatera, Indonesia. The research was conducted from July to August 2020 in the coastal areas of Hajoran and Jago Jago. The parameters measured in this study were density, coverage, biomass, carbon content, and carbon stock in seagrass. Biomass analysis and carbon measurement are divided into the top (above-ground biomass) and the bottom substrate (below-ground biomass). Carbon measurements are conducted using the loss on ignition (LOI) approach. The results showed that the seagrass ecosystem on the coast of Central Tapanuli Regency, which was covered by monospecies Enhalus acoroides, was in a less healthy condition with a cover percentage of 30.3-33.3% and a density of 59-67 shoots/m2. Above-ground and below-ground seagrass biomass reached 140.19-188.72 g/m2 and 368.13-423.69 g/m2 respectively, while carbon stock reached 70.57-94.86 g Corg/m2 and 18731-19603 g Corg/m2 and total standing stock range 257.87-290.90 g Corg/m2. The data obtained from this research can be used as a database to see the potential of seagrass beds as storage of CO2 and as an effort to mitigate and adapt to climate change.

Organic carbon storage in the biomass and soils of hedgerows

2020 ◽  
Author(s):  
Sophie Drexler ◽  
Axel Don
Keyword(s):  
Organic Carbon ◽  
Carbon Storage ◽  
Carbon Stock ◽  
Meta Analysis ◽  
Agricultural Landscapes ◽  
Soil Protection ◽  
Biomass Carbon ◽  
Above Ground Biomass ◽  
Ground Biomass ◽  
Below Ground

<p>The establishment of hedgerows as traditional form of agroforestry in Europe is a promising strategy to promote carbon sinks in the context of climate change mitigation. However, only few studies quantified the potential of hedgerows to sequester and store carbon. We therefore conducted a meta-analysis to gain a quantitative overview about the carbon storage in the above- and below-ground biomass and soils of hedgerows.</p><p>Soil organic carbon (SOC) data of hedgerows and adjacent agricultural fields of nine studies with 83 hedgerow sites was compiled. On average, the establishment of hedgerows on cropland increased SOC by 32%. No significant differences were found between the SOC storage of hedgerows and that of grassland. The literature survey on the biomass carbon stocks of hedgerows resulted in 23 sampled hedgerows, which were supplemented by own biomass data of 49 hedgerows from northern Germany. Biomass stocks increased with time since last coppicing and hedgerow height. The mean (± SD) above-ground biomass carbon stock of the analysed hedgerows was 48 ± 29 Mg C ha<sup>-1</sup>. Below-ground biomass values seemed mostly underestimated, as they were calculated from above-ground biomass via fixed assumed root:shoot ratios not specific for hedgerows. Only one study reported measured root biomass under hedgerows with a root:shoot ratio of 0.94:1 ± 0.084. With this shoot:root ratio an average below-ground biomass carbon stock of 45 ± 28 Mg C ha<sup>-1 </sup>was estimated, but with high uncertainty.</p><p>Thus, the establishment of hedgerows on cropland could lead to a SOC sequestration of 1.0 Mg C ha<sup>-1</sup> year<sup>-1</sup> over a 20-year period. Additionally, up to 9.4 Mg C ha<sup>-1</sup> year<sup>-1</sup> could be sequestered in the hedgerow biomass over a 10 year period. In total, hedgerows store 106 ± 41 Mg C ha<sup>-1</sup> more C than croplands. Our results indicate that organic carbon stored in hedgerows is similar high as in forests. We discuss how the establishment of hedgerows, especially on cropland, can thus be an effective option for C sequestration in agricultural landscapes, meanwhile enhance biodiversity, and soil protection.</p>

scholarly journals Estimasi Stok Karbon pada Biomassa Lamun di Pulau Semak Daun, Kepulauan Seribu

2019 ◽  
Vol 4 (2) ◽  
pp. 89
Author(s):  
Jessica Viny Gunawan ◽  
Maxi Parengkuan ◽  
A'an Johan Wahyudi ◽  
Firman Zulpikar
Keyword(s):  
Carbon Stock ◽  
Anthropogenic Activities ◽  
Total Carbon ◽  
Anthropogenic Activity ◽  
Thalassia Hemprichii ◽  
Coverage Area ◽  
Seagrass Meadows ◽  
Ground Biomass ◽  
Seagrass Ecosystem ◽  
Seagrass Biomass

<strong>Carbon Stock Estimation in Seagrass Biomass on Semak Daun Island, Thousand Islands</strong>. Seagrass ecosystem has a vital role in protecting the coastal ecosystem. It can also sequester and store carbon as an organic material (blue carbon) for a long time. However, anthropogenic activities in coastal areas give environmental stress on the seagrass ecosystem. This research was conducted to assess the carbon stock of seagrass biomass in Semak Daun Island in order to evaluate the potential of the seagrass meadows in sequestering carbon. Sampling and observation were held in the seagrass ecosystem to obtain seagrass density, biomass, frequency of occurrence, water quality, and anthropogenic activity. Carbon stock was calculated by the loss of ignition (LOI) method, and combined with density to determine the total carbon stock in the whole area of seagrass meadows. Seagrass species in Semak Daun Island consist of Halophila ovalis, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, and Halodule uninervis. The coverage area of seagrass in Semak Daun Island was 9.1 ha with carbon stock value of 1.84 ton C or equivalent to 6.76 ton CO2. Fifty two percent of the carbon stock was originated from the below-ground biomass and 48% from the above-ground biomass.

scholarly journals Stok Karbon pada Ekosistem Lamun di Pulau Kemujan dan Pulau Bengkoang Taman Nasional Karimunjawa

2021 ◽  
Vol 10 (1) ◽  
pp. 39-47
Author(s):  
Septiyani Kusuma Dewi ◽  
Wilis Ari Setyati ◽  
Ita Riniatsih
Keyword(s):  
Carbon Stock ◽  
Above Ground Biomass ◽  
Loss On Ignition ◽  
Thalassia Hemprichii ◽  
Enhalus Acoroides ◽  
Halophila Ovalis ◽  
Below Ground ◽  
Stock Estimation ◽  
Cymodocea Rotundata ◽  
Cymodocea Serrulata

Lamun memiliki kemampuan menyimpan karbon di dalam biomassanya. Penelitian ini bertujuan untuk mengetahui nilai estimasi simpanan karbon dalam biomassa pada vegetasi lamun di Pulau Kemujan serta Pulau Bengkoang, Taman Nasional Karimunjawa. Pengambilan data menggunakan metode purposive sampling dan metode Seagrass Watch dengan mempertimbangkan kondisi lamun di lokasi tersebut. Pengukuran estimasi karbon dilaksanakan di Laboratorium Ilmu dan Nutrisi Pakan FPP Undip menggunakan metode Loss on Ignition dengan prinsip pengabuan. Jenis lamun yang ditemukan di Pulau Kemujan yaitu Enhalus acoroides, Thalassia hemprichii, dan Cymodocea serrulata, dan pada Pulau Bengkoang ditemukan lamun jenis Thalassia hemprichii, Cymodocea rotundata, Halophila ovalis, dan Enhalus acoroides. Nilai biomassa bawah substrat dan atas substrat pada Stasiun I Pulau Kemujan (3104,5 gbk/m2 dan 1868 gbk/m2) menunjukkan nilai yang lebih besar dibandingkan nilai biomassa bawah substrat dan atas substrat pada Stasiun II Pulau Bengkoang (714,25 gbk/m2 dan 534,25 gbk/m2). Nilai estimasi simpanan karbon pada Stasiun I yaitu 138,47 – 1533,28 gC/m2 dan pada Stasiun II yaitu 17,02– 498,31 gC/m2. Mayoritas nilai karbon lebih tinggi pada jaringan lamun bawah substrat.  Nilai estimasi simpanan karbon sedimen pada Stasiun I yaitu 52,60–339,81 gC/m2 dan 86,85–1329,08 gC/m2 pada Stasiun II. Penelitian ini dapat memberikan informasi mengenai fungsi lain ekosistem lamun yaitu sebagai penyerap karbon sehingga dapat dijadikan edukasi kepada masyarakat umum untuk melestarikan ekosistem lamun sebagai ekosistem yang dapat berperan penting dalam mengatasi masalah emisi gas rumah kaca dan pemanasan global. Seagrass have ability to store carbon mass in their biomass. The aim of this research is to find out the value of carbon stock on seagrass biomass in Kemujan Island and Bengkoang Island seagrass vegetation. The research was retrieval in purposive sampling method and collected seagrass vegetation data by using Seagrass Watch. Measurement of carbon stock estimation held  in INP FPP Undip Laboratory by using Loss on Ignition method. The type of seagrass found in Kemujan Island were Enhalus acoroides, Thalassia hemprichii, and Cymodocea serrulata, meanwhile in Bengkoang Island there were found Thalassia hemprichii, Cymodocea rotundata, Halophila ovalis, and Enhalus acoroides. The value of below ground and above ground biomass in Station I Kemujan Island (3104,5 gbk/m2 dan 1868 gbk/m2) is higher than the value of below ground and above ground biomass in Station II Bengkoang Island (714,25 gbk/m2 and 534,25 gbk/m2). Carbon stock estimation value in Station I is 138,47–1533,28 gC/m2  and 17,02–498,31 gC/m2 in Station II. Most of carbon stock value is higher in below ground seagrass tissue. The value of carbon stock estimation of sediment in Station I is 52,60–339,81 gC/m2 and 86,85–1329,08 gC/m2 in Station II. The research gives information about another function of seagrass, as carbon absorber and can be as education for public to conserve seagrass ecosystem and has important role in resolving greenhouse gas emission and global warming.

scholarly journals Biomass Carbon Content in Schima-Castanopsis Forest of Midhills of Nepal: A Case Study from Jaisikuna Community Forest, Kaski

2017 ◽  
Vol 5 (1) ◽  
pp. 1-8
Author(s):  
Sushma Tripathi ◽  
Chandra Bahadur Thapa ◽  
Amrit Sharma
Keyword(s):  
Carbon Content ◽  
Carbon Stock ◽  
Total Biomass ◽  
Biomass Carbon ◽  
Tree Biomass ◽  
Community Forests ◽  
Ground Biomass ◽  
Stock Biomass ◽  
Below Ground

Forests are considered as both the source and sinks of carbon. Different types of forests have different carbon stock. Nepal's midhills community forests have high potentiality to sequester carbon. This paper analyzes the biomass carbon stock in Schima-Castanopsis forest of Jaisikuna community forests of Kaski district, Nepal. Forest area was divided into two blocks and 18 sample plots (9 in each block) were laid randomly. Diameter at Breast Height (DBH) and height of trees (DBH≥5cm) were measured using the DBH tape and clinometer. Leaflitter, herbs, grasses and seedling were collected from 1*1m2 plot and fresh weight was taken. Biomass of tree was calculated and below ground biomass is assumed 15% of above ground tree biomass. For calculating carbon stock, biomass is multiplied by default value 0.47. The above ground tree biomass (AGTB) carbon of chilaune, katus and other species was found 19.56 t/ha, 18.66 t/ha and 3.59 t/ha respectively. The AGTB of chilaune dominated, katus dominated and whole forest was found 43.78 t/ha, 39.83 t/ha and 41.81 t/ ha respectively. LHG carbon was found 2.73 t/ha. Below ground biomass carbon at whole forest was found 6.27 t/ha respectively. Total biomass and carbon at forest was found 108.09 t/ha and 50.80 t/ ha respectively. Difference in biomass and carbon content at chilaune dominated block and katus dominated block was found insignificant. Carbon estimation at forest of different elevation, aspect and location are recommended for further research.

scholarly journals Above-ground carbon stock assessment in different forest types of Nepal

1970 ◽  
Vol 19 (2) ◽  
pp. 10-14 ◽  
Author(s):  
SK Baral ◽  
R Malla ◽  
S Ranabhat
Keyword(s):  
Carbon Sequestration ◽  
Key Words ◽  
Carbon Stock ◽  
Stock Assessment ◽  
Allometric Equations ◽  
Biomass Carbon ◽  
Above Ground Biomass ◽  
Forest Types ◽  
Ground Biomass ◽  
Physiographic Regions

This study assessed the above-ground carbon stock in the five major forest types, representing two physiographic regions and four districts of Nepal. Altogether, 116 circular sample plots were laid out systematically in different forests types to inventory the forest. Total above-ground biomass was derived with allometric equations. Results indicated variation in age of the stand (18-75 years), above-ground carbon stock per hectare (34.30- 97.86 dry wt. ton ha-1) and rate of carbon sequestration (1.30-3.21 t ha-1yr-1), according to different forest types. The rate of carbon sequestration by different forest types depended on the growing nature of the forest stands. Tropical riverine and Alnus nepalensis forest types demonstrated the highest carbon sequestration rates in Nepal. Key Words: Above-ground biomass; carbon; forest types; Nepal DOI: 10.3126/banko.v19i2.2979 Banko Janakari, Vol. 19, No.2 2009 pp.10-14

scholarly journals Comparison of Capability of SAR and Optical Data in Mapping Forest above Ground Biomass Based on Machine Learning

2020 ◽  
Vol 5 (1) ◽  
pp. 13
Author(s):  
Negar Tavasoli ◽  
Hossein Arefi
Keyword(s):  
Machine Learning ◽  
Carbon Stock ◽  
Vegetation Indices ◽  
Forest Biomass ◽  
Principal Component ◽  
Optical Data ◽  
Above Ground Biomass ◽  
Ground Biomass ◽  
Texture Characteristics ◽  
Sentinel 2

Assessment of forest above ground biomass (AGB) is critical for managing forest and understanding the role of forest as source of carbon fluxes. Recently, satellite remote sensing products offer the chance to map forest biomass and carbon stock. The present study focuses on comparing the potential use of combination of ALOSPALSAR and Sentinel-1 SAR data, with Sentinel-2 optical data to estimate above ground biomass and carbon stock using Genetic-Random forest machine learning (GA-RF) algorithm. Polarimetric decompositions, texture characteristics and backscatter coefficients of ALOSPALSAR and Sentinel-1, and vegetation indices, tasseled cap, texture parameters and principal component analysis (PCA) of Sentinel-2 based on measured AGB samples were used to estimate biomass. The overall coefficient (R2) of AGB modelling using combination of ALOSPALSAR and Sentinel-1 data, and Sentinel-2 data were respectively 0.70 and 0.62. The result showed that Combining ALOSPALSAR and Sentinel-1 data to predict AGB by using GA-RF model performed better than Sentinel-2 data.

Carbon stock assessment through above-ground biomass of trees at different forest composition in Mt. Malindawag, Lubilan, Naawan, Misamis Oriental, Philippines

2021 ◽  
Vol 11 (01) ◽  
pp. 100-113
Author(s):  
M. G. Origenes ◽  
R. L. Lapitan
Keyword(s):  
Carbon Stock ◽  
Diversity Index ◽  
Stock Assessment ◽  
Mixed Forest ◽  
Forest Composition ◽  
Above Ground Biomass ◽  
Plantation Forest ◽  
Species Diversity Index ◽  
Ground Biomass ◽  
Number Of Individuals

It is documented that the amounts of carbon stored and its level of degradation in different forests compositions and different types of forest is mostly unknown, Philippines is no exemption as little was done in some places of this country. This study was conducted to assess carbon stock through above ground biomass of trees at different forest composition in Mt. Malindawag. There were three (3) 20m x 20m sample plots (quadrats) (400m2 equivalent to 0.04 ha) established as replicate plots provided with 50m intervals. Forest composition such as the Agroforestry area, mixed forest area and the Plantation forest were assessed in terms of the number of individuals, number of species, diameter, and height to calculate the biomass, tree biomass density as well as the carbon stock. Based on the results of the study conducted in different forest compositions of Mt. Malindawag, plantation forest has the highest carbon stocking rate. However, these results were not significantly different from the other forest composition. This was associated with a higher accumulated diameter, which resulted in higher biomass and eventually carbon stock. Species found in this forest composition are productive and have lesser number of individuals; therefore, there is lesser competition for resources such as light. Such a mechanism might contribute to the higher biomass and carbon stock. However, the result may not be right to other areas due to uncontrollable factors, anthropogenic and environmental factors. Hence, it is recommended to have further studies on areas where trees have similar age, species diversity index as well as stand development and site productivity for a more accurate and quantifiable carbon stock.

scholarly journals Carbon storage in seagrass soils: long-term nutrient history exceeds the effects of near-term nutrient enrichment

2016 ◽  
Vol 13 (1) ◽  
pp. 313-321 ◽  
Author(s):  
A. R. Armitage ◽  
J. W. Fourqurean
Keyword(s):  
Organic Carbon ◽  
Soil Carbon ◽  
Carbon Stock ◽  
Seagrass Beds ◽  
Nutrient Input ◽  
High Carbon ◽  
Phosphorus Addition ◽  
Seagrass Biomass ◽  
Near Term

Abstract. The carbon sequestration potential in coastal soils is linked to aboveground and belowground plant productivity and biomass, which in turn, is directly and indirectly influenced by nutrient input. We evaluated the influence of long-term and near-term nutrient input on aboveground and belowground carbon accumulation in seagrass beds, using a nutrient enrichment (nitrogen and phosphorus) experiment embedded within a naturally occurring, long-term gradient of phosphorus availability within Florida Bay (USA). We measured organic carbon stocks in soils and above- and belowground seagrass biomass after 17 months of experimental nutrient addition. At the nutrient-limited sites, phosphorus addition increased the carbon stock in aboveground seagrass biomass by more than 300 %; belowground seagrass carbon stock increased by 50–100 %. Soil carbon content slightly decreased ( ∼  10 %) in response to phosphorus addition. There was a strong but non-linear relationship between soil carbon and Thalassia testudinum leaf nitrogen : phosphorus (N : P) or belowground seagrass carbon stock. When seagrass leaf N : P exceeded an approximate threshold of 75 : 1, or when belowground seagrass carbon stock was less than 100 g m−2, there was less than 3 % organic carbon in the sediment. Despite the marked difference in soil carbon between phosphorus-limited and phosphorus-replete areas of Florida Bay, all areas of the bay had relatively high soil carbon stocks near or above the global median of 1.8 % organic carbon. The relatively high carbon content in the soils indicates that seagrass beds have extremely high carbon storage potential, even in nutrient-limited areas with low biomass or productivity.

Sign in / Sign up

Export Citation Format

Share Document