scholarly journals ESTIMATION OF CARBON STORAGE IN SHRUBS IN CEMPAKA SUBDISTRICT, BANJARBARU

2016 ◽  
Vol 2 (2) ◽  
pp. 47-52 ◽  
Author(s):  
Dienny Redha Ra ◽  
Wahyunah Wahyunah ◽  
Virgina Maria Louisa
Keyword(s):  
Carbon Storage ◽  
Basic Characteristic ◽  
Stem Diameter ◽  
Main Stem ◽  
Degraded Land ◽  
Average Value ◽  
Pioneer Plants ◽  
Canopy Volume ◽  
Shrub Canopy ◽  
Sustainable Recovery

The amount of critical lands, mostly wetlands, in South Kalimantan Province has increased, and it requires quick and sustainable recovery. An analysis of the potential of shrubs in vegetation indicated that shrubs had an important role in greening a city either in mixed vegetation or in vegetation filled with shrub strata. This basic characteristic becomes the basis of the study on carbon storage in shrubs and their potential as the alternative vegetation in the recovery of degraded lands. The study was conducted in Cempaka Subdistrict, Banjarbaru. Samples were taken at three stations, each of which consisted of three plots sample plots measuring 4 x 4 m. Carbon storage in the shrubs was estimated using the main stem diameter, and converted into table of average carbon estimation. The shrub canopy was estimated based on the types of canopy using formulas and types of canopy volume. The results showed that the average value of carbon storage contained in the shrubs per plot was 15.54 lbs/m2/day, with an average canopy volume per plot was 0.40 m3. In 1 ha of growing area, shrubs was estimated to absorb carbon up to 155,416.67 lbs. Total canopy volume developed by the shrub vegetation in the area was 22,462,878.50 m3/ha. The canopy volume has a correlation with carbon storage in shrubs, so shrubs are potential as the initial alternative vegetation or pioneer plants for reforestation of degraded land.

scholarly journals Direct Measurement of Trunk Volume in Forest Trees: Focus on White Pine and Comparison to a Statistical Method

2020 ◽  
Author(s):  
Robert T. Leverett ◽  
David N. Ruskin ◽  
Susan A. Masino
Keyword(s):  
Carbon Storage ◽  
Direct Measurement ◽  
State Of The Art ◽  
Forest Trees ◽  
White Pine ◽  
Individual Tree ◽  
Average Value ◽  
Direct Measurement Method ◽  
Volume Models ◽  
Taper Models

AbstractAccurate measurement of tree volume and associated carbon storage are necessary to determine ongoing sequestration as well as site productivity and changes in growth of individual tree species. Standard statistical methods vary their estimations of tree volume, and thus carbon storage and sequestration, particularly in larger, older trees in a forest setting. Here, we describe a detailed direct measurement method that combines traditional trunk taper models with state-of-the-art instrumentation and the best mathematical models for producing more accurate measurements of trunk volume. A stand-grown Eastern White Pine (Pinus strobus) is used as an example; the method is compared with a commonly used statistics-based Forest Service method. This latter method is shown to over- or underestimate volume if the trunk form factor deviates sufficiently from the average value for this species. Direct measurement modeling can be used to validate or choose among existing simple statistical volume models, especially for local applications. It can also assist in widespread recalibration of other standards and models used to estimate volume and carbon storage over time.

scholarly journals Estimating Canopy Parameters Based on the Stem Position in Apple Trees Using a 2D LiDAR

Agronomy ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 740 ◽  
Author(s):  
Nikos Tsoulias ◽  
Dimitrios S. Paraforos ◽  
Spyros Fountas ◽  
Manuela Zude-Sasse
Keyword(s):  
Incident Angle ◽  
Structural Parameters ◽  
Point Clouds ◽  
Absolute Error ◽  
Apple Orchard ◽  
Stem Diameter ◽  
Coefficient Of Determination ◽  
Individual Tree ◽  
Canopy Volume ◽  
Stem Position

Data of canopy morphology are crucial for cultivation tasks within orchards. In this study, a 2D light detection and range (LiDAR) laser scanner system was mounted on a tractor, tested on a box with known dimensions (1.81 m × 0.6 m × 0.6 m), and applied in an apple orchard to obtain the 3D structural parameters of the trees (n = 224). The analysis of a metal box which considered the height of four sides resulted in a mean absolute error (MAE) of 8.18 mm with a bias (MBE) of 2.75 mm, representing a root mean square error (RMSE) of 1.63% due to gaps in the point cloud and increased incident angle with enhanced distance between laser aperture and the object. A methodology based on a bivariate point density histogram is proposed to estimate the stem position of each tree. The cylindrical boundary was projected around the estimated stem positions to segment each individual tree. Subsequently, height, stem diameter, and volume of the segmented tree point clouds were estimated and compared with manual measurements. The estimated stem position of each tree was defined using a real time kinematic global navigation satellite system, (RTK-GNSS) resulting in an MAE and MBE of 33.7 mm and 36.5 mm, respectively. The coefficient of determination (R2) considering manual measurements and estimated data from the segmented point clouds appeared high with, respectively, R2 and RMSE of 0.87 and 5.71% for height, 0.88 and 2.23% for stem diameter, as well as 0.77 and 4.64% for canopy volume. Since a certain error for the height and volume measured manually can be assumed, the LiDAR approach provides an alternative to manual readings with the advantage of getting tree individual data of the entire orchard.

scholarly journals CARBON STORAGE OF MANGROVE ECOSYSTEM IN NORTH SULAWESI AND ITS IMPLICATIONS TO CLIMATE CHANGE MITIGATION ACTION

2019 ◽  
Vol 14 (2) ◽  
Author(s):  
Terry Louise Kepel
Keyword(s):  
Climate Change ◽  
Carbon Storage ◽  
Climate Change Mitigation ◽  
Action Plan ◽  
Mangrove Ecosystem ◽  
Coastal Forests ◽  
Average Value ◽  
North Sulawesi ◽  
Mangrove Ecosystems ◽  
Change Mitigation

North Sulawesi is one of the provinces that implements national / regional action plan (RAN / RAD) policies as part of a national effort to climate change mitigation. One of the land-based mitigation activities in North Sulawesi is to measure and monitore  biomass and carbon stocks in forests including coastal forests where the measurement area is still limited. In 2013-2015, Blue Carbon Research Group  conducted research in four locations in North Sulawesi, which aims to analyze the ecological conditions and the ability of coastal ecosystems, especially mangrove in sequestering carbon. Study sites situated in Ratatotok - Southeast Minahasa Regency, Kema - North Minahasa Regency, Lembeh Island – Bitung City and Sangihe Island – Sangihe Regency. A total of 17 species identified where B. gymnorrhiza, R. mucronata and S. alba found in all locations. Species diversity ranges from low to moderate, where species distribution is uneven. Carbon storage capacity is equal to 343.85 Mg C ha-1 in Ratatotok, 254,35 Mg C ha-1 in Lembeh, 387,95 Mg C ha-1 in Kema and 594,83 Mg C ha-1 in Sangihe. More than 59% of carbon storage are in the sediment. The average value of carbon storage in the four research sites is 456,86 Mg C ha-1 or 5,70 Tg C after converted to a total area of mangrove ecosystems in North Sulawesi. The value is equal to absorption of atmospheric CO2 by 20.70 Tg CO2e. Potential emission due to changes in mangrove conversion reach 0.42 Tg CO2e. Efforts to increase the contribution of reducing North Sulawesi emissions can be achieved by implementing emission reduction interventions through the rehabilitation and conservation of mangrove ecosystems. 

scholarly journals Determination of Some Agronomic and Fruit Quality Characteristics of Some Watermelon Accessions from Turkish Watermelon Germplasm

2021 ◽  
Vol 9 (8) ◽  
pp. 1322-1328
Author(s):  
Ercüment Atlı ◽  
İlknur Solmaz ◽  
Nebahat Sarı ◽  
Haşim Kelebek
Keyword(s):  
Fruit Quality ◽  
Total Yield ◽  
Stem Diameter ◽  
Main Stem ◽  
Soluble Solids ◽  
Stem Length ◽  
Carotenoid Content ◽  
Array Detector ◽  
Fruit Characteristics ◽  
Significant Difference

This study has been conducted to determine the fruit quality parameters such as sugar and carotenoid content as well as plant and fruit characteristics of 11 local watermelon genotypes from watermelon genetic resources collection of Cukurova University, Department of Horticulture. First and 50% male and female flowering period, main stem length, main stem diameter, number of nodes on main stem, total yield, fruit weight, fruit length, fruit diameter, fruit rind thickness, total soluble solids (TSS), sugar and carotenoid contents were examined. Although there is no significant difference for main stem diameter and number of nodes on the main stem, significant differences were obtained for total yield, sugar and carotenoid composition of the genotypes. Carotenoid and sugar analysis were performed with a high-performance liquid chromatographic method coupled with diode-array detector (HPLC-DAD) and HPLC coupled with refractive index detector (RID), respectively. In all studied genotypes, cis-13-lycopene and β-carotene were the most abundant compounds. As expected for watermelon genotypes, the main sugar found in all studied genotypes was fructose. According to PCA analyses, genotypes were characterized by physical and chemical composition. Overall evaluation of results revealed that Kar 147 had better potential with carotenoid, sugar contents and fruit characteristics.

Pendugaan Korelasi antara Karakteristik Tanah terhadap Cadangan Karbon pada Tegakan Shorea javanica K. et. V. di BKPH Jasinga Leuwiliang

2020 ◽  
Vol 11 (2) ◽  
pp. 71-81
Author(s):  
Omo Rusdiana ◽  
Erwin Sianturi
Keyword(s):  
Chemical Analysis ◽  
Carbon Storage ◽  
Soil Surface ◽  
Soil Characteristics ◽  
Research Field ◽  
Total Carbon ◽  
Soil Carbon Storage ◽  
Significant Relation ◽  
Organic C ◽  
Average Value

Forest as a natural resource that plays an important role in the lives of living beings either directly or indirectly. This research aims to calculate and determine the correlation of the characteristics of the soil carbon storage in the soil surface on Shorea javanica that planted in 2004 and 2007 at BKPH Jasinga Leuwiliang. The potential of carbon that storage in the soil surface in BKPH Jasinga Leuwiliang are varieted in 6 research plots with the carbon that is at most 3 plots of 3601.10 kg/ha or approximately 35.54% of the total carbon in the area and most are low in 5 plots of 499.07 kg/ha or about 4.9% of the total carbon in all the plots. Chemical analysis showed that the land average value is pH = 4.19, organic C = 3.18%, BO = 5.53%, N-total = 0.38%, C/N = 8.55%, P = 13.96 ppm, Kdd = 0.21 me/100g, CEC = 0.21 me/100g, BD = 0.77 g/cm3, and the porosity = 0.71%. The value of soil characteristics on research plots, both physically and chemically are classified as low to moderate where the correlation between the characteristics of the soil in the research field did not have a significant relation to the carbon stored. Keywords: BKPH Jasinga, carbon, correlation, Shorea javanica, soil characteristics

Potensi Vegetasi Semak di Kelurahan Bangkal, Palam dan Sungai Tiung, Kecamatan Cempaka, Banjarbaru

BIOSCIENTIAE ◽  
2021 ◽  
Vol 18 (2) ◽  
pp. 85
Author(s):  
Dienny Redha Rahmani ◽  
Gunawan Gunawan
Keyword(s):  
Correlation Analysis ◽  
Urban Areas ◽  
Green Space ◽  
Pearson Correlation ◽  
Urban Structure ◽  
Importance Value Index ◽  
Importance Value ◽  
Canopy Volume ◽  
Shrub Canopy ◽  
Pearson Correlation Analysis

A good urban structure and activity need a green spaces to increase its ecological function. However, trees will not fully be able to fill an important space in urban areas while the shrub woody vegetation has the potential to fill that space. Therefore, the aim of this study is to determine the  potential of shrub as a constituent of urban vegetation so it can be used as material information about the planning of land use in the district of Cempaka. This sudy was conducted by determining the three sampling stations and 3 plots of 4m x 4m in wide on each station with data based on a map of shrub green space in District of Cempaka using purposive sampling method, the analysis performed includes the analysis of shrub canopy, measured environmental parameters, and data were analyzed with analysis of canopy volume, Pearson correlation analysis and analysis of Importance Value Index (IVI). Shrub vegetation estimation results indicate that the shrub canopy volume in the district of Cempaka is up to 22,462,878.50 m3 in the bush land area of 5675.116 hectares. Pearson correlation analysis showed that the shrub canopy volume in the district Cempaka effect on changes in environmental factors. Besides the most dominant species is Ficus fistulosa Reinw. ex Bl with IVI of 56.1%. Based on the results obtained can be concluded that the shrub has potential as a constituent of vegetation in urban green space.

Variation Characteristics of Artificial Grassland Carbon Storage in the Underground

2013 ◽  
Vol 291-294 ◽  
pp. 1503-1506
Author(s):  
Xiao Guang Zhao ◽  
Chuan Ke Shao ◽  
Shi Jie Song ◽  
Di Li Sun ◽  
Li Ting Guo
Keyword(s):  
Carbon Storage ◽  
Surface Soil ◽  
Early Stage ◽  
Soil Layer ◽  
Central Plateau ◽  
Average Value ◽  
Variation Characteristics ◽  
Underground Biomass ◽  
Surface Soil Layer ◽  
Artificial Grassland

For a better understanding of the dynamics of rehabilitated grassland, carbon storage in the underground including soil and roots were studied in a space series of replaced time courses.Soil organic carbon (SOC) of the 0-100cm layer increased with the addition of restoration years.It was much more than the average of 4.46-9.95 kg m-2 in central Plateau. SOC in surface soil (layer 0-20cm) fell slightly in early stage (0-2a) and then rose rapidly. In 30a, the increase amplitude turned to be 123% and it reached the maxmum.SOC in this layer was significantly correlated with an average value for the whole 0-100 cm profile.So SOC storage, in the 0-100cm layer, can be well estimated using values for the 0-20 cm layer. Alfalfa underground biomass carbon storage rose first and then reduced. It reached the maxmum in 10a. The carbon storage of weed roots increased continuously and was still less than that of alfalfa roots in 30a.

scholarly journals Comparisons of Tolerance of Ash Yellows Phytoplasmas in Fraxinus Species and Rootstock-Scion Combinations

Plant Disease ◽  
1997 ◽  
Vol 81 (4) ◽  
pp. 395-398 ◽  
Author(s):  
W. A. Sinclair ◽  
H. M. Griffiths ◽  
T. H. Whitlow
Keyword(s):  
Shoot Growth ◽  
Stem Diameter ◽  
Green Ash ◽  
Growth Responses ◽  
Root Volume ◽  
Average Value ◽  
White Ash ◽  
Greenhouse Experiments

Growth responses of different ash (Fraxinus) species and rootstock-scion combinations to ash yellows (AshY) phytoplasmas were compared in greenhouse experiments by expressing each measurement as a proportion of the final average value of the variable in noninoculated, own-rooted control trees. Phytoplasmal infection suppressed shoot growth of white ash (F. americana) and green ash (F. pennsylvanica) beginning when buds opened, but did not suppress velvet ash (F. velutina) until after 60 days of growth. AshY-associated growth losses in height, stem diameter, and root volume, averaged across two experiments, were 80, 93, and 98%, respectively, in white ash; 60, 57, and 79% in green ash; and 23, 0, and 12% in velvet ash. Growth in height, but not in stem diameter or root volume, of diseased white ash on velvet ash rootstock was significantly greater than growth of diseased own-rooted white ash. White ash witches'-brooms grafted onto healthy velvet ash continued to grow but did not produce vigorous, dominant shoots. Growth of diseased velvet ash on white ash roots was severely suppressed in comparison with that of diseased own-rooted velvet ash. Management of AshY through the use of tolerant genotypes may require tolerance in both scions and rootstocks.

scholarly journals Growth Response of Local Cassava to Cutting Models and the Number of Buds

2021 ◽  
Vol 36 (2) ◽  
pp. 379
Author(s):  
Tri Mulya Hartati ◽  
Chumidach Roini ◽  
Indah Rodianawati
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Growth Parameters ◽  
Block Design ◽  
Stem Diameter ◽  
Food Sources ◽  
Local Varieties ◽  
Average Value ◽  
Randomized Block Design ◽  
Number Of Leaves

Cassava is one of the local food sources that are widely available in almost every region. Cuttings are used to plant cassava, and these cuttings will produce a number of roots and buds. The main purpose of this study was to evaluate the effect of cuttings slices model and the number of buds on the growth of Tobelo local varieties of cassava. This study employed a factorial Randomized Block Design (RBD), with the cuttings slices model as the first factor, consisting of three levels, namely: flat slice, one-sided slice and two-sided slice. The second factor is the number of buds, which is divided into three levels, 1 bud, 2 buds and 3 buds. The observation parameters in this study include plant height, number of leaves, stem diameter and leaf area. The results have revealed that the model of two-sided sliced cuttings combined with the number of one bud is the most effective treatment in improving the growth of cassava plants of Tobelo local varieties. The models of one-sided and two-sided oblique cuttings slices yield the highest average value for the parameters of plant height, stem diameter and leaf area, while the treatment with one bud tends to give the best results for the growth parameters.

Penerapan Teknologi "BioPot" dalam Menunjang Revegatasi Lahan Bekas Tambang Pasir

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Novi Arfarita ◽  
Cahyo Prayogo
Keyword(s):  
Land Use ◽  
Woody Plants ◽  
Steep Slope ◽  
Persea Americana ◽  
Mining Activity ◽  
Land Use Management ◽  
Sand Mining ◽  
Degraded Land ◽  
Introduced Plants ◽  
Pioneer Plants

Abstract. The community-managed sand mining activity in Bambang Village, Wajak District, Malang Regency caused serious environmental descruptions and many did not have official permits. The land that was once fertile turned into degraded land, the level of soil fertility, often found former sand dug pits and cliffs that have relatively steep slope. Joint land rehabilitation includes land use management, erosion and sedimentation control, and revegetation and maintenance of introduced plants. Land structuring is carried out to prepare land to become land ready for planting by adopting "BioPot" technology which is preparing planting hole on the ground consisting of a mixture of clay, manure, biofertilizers and lime. Selected plants adapt to existing conditions consisting of woody plants and fruits such as: Pule (Alstonia macrophylla), Kecrutan (Spatodea campalunata), Bungur (Langerstroemia spesiosa), Avocado (Persea americana), Pete (Parkia speciaosa), Durian (Spatodea campalunata), Pucuk merah (Syzygium myrtifolium), etc. Based on the existing land conditions, the land is arranged using a blocking system and between plants 4 m x 4 m apart. This technology can be adopted well by the community and planted plants can grow and develop properly.Keywords: Land Former Sand Mining, Revenge, Biofertilizer, Pioneer Plants Abstrak. Kegiatan penambangan pasir yang dikelola masyarakat di Desa Bambang, Kecamatan Wajak, Kabupaten Malang menyebabkan kerusakan lingkungan yang serius dan banyak yang tidak memiliki ijin resmi. Lahan yang semula subur berubah menjadi lahan terdegradasi tingkat kesuburan tanahnya, banyak dijumpai lubang bekas galian pasir serta tebing yang memiliki kemiringan lereng relatif curam. Rehabilitas lahan yang dilakukan bersama mencakup penataan lahan, pengendalian erosi dan sedimentasi, serta revegetasi dan pemeliharaan tanaman yang diintroduksikan. Penataan lahan dilakukan untuk menyiapkan lahan menjadi lahan siap tanam dengan mengadopsi teknologi “BioPot” yang merupakan lubang tanam terdiri dari campuran tanah liat, pupuk kandang, biofertiliser dan kapur. Tanaman terpilih menyesuaikan dengan kondisi yang ada yang terdiri dari tanaman kayuan dan buah-buahan seperti: Pule (Alstonia macrophylla), Kecrutan (Spatodea campalunata), Bungur (Langerstroemia spesiosa), Alpukat (Persea americana), Pete (Parkia speciaosa), Durian (Durio zibhentinus), Pucuk merah (Syzygium myrtifolium), dll. Berdasarkan kondisi lahan yang ada, lahan ditata menggunakan sistem blocking dan antar tanaman berjarak 4 m x 4 m. Teknologi ini dapat diadopsi dengan baik oleh masyarakat dan tanaman yang ditanaman dapat tumbuh dan berkembang dengan baik. Kata Kunci : Lahan Bekas Tambang Pasir, Revegetasi, Biofertilizer, Tanaman Pioneer

Sign in / Sign up

Export Citation Format

Share Document