scholarly journals Potensi Simpanan Karbon pada Beberapa Tipologi Hutan Rawa Gambut di Kalimantan Tengah

2018 ◽  
Vol 12 (2) ◽  
pp. 196 ◽  
Author(s):  
Muhammad Abdul Qirom ◽  
Tri Wira Yuwati ◽  
Purwanto Budi Santosa ◽  
Wawan Halwany ◽  
Dony Rachmanadi
Keyword(s):  
Carbon Content ◽  
Soil Carbon ◽  
Conversion Factor ◽  
Secondary Forest ◽  
Dry Weight ◽  
Carbon Stocks ◽  
Total Carbon ◽  
Carbon Pools ◽  
Soil Carbon Pools ◽  
Soil Carbon Stocks

Akurasi pendugaan simpanan karbon hutan rawa gambut dapat ditingkatkan melalui pengukuran masing-masing gudang/sumber karbon dan berbagai macam tipologi hutannya. Pengukuran tersebut berkaitan dengan besarnya kandungan dan fraksi simpanan karbon pada masing-masing gudang karbon. Penelitian ini bertujuan untuk mendapatkan kandungan dan potensi simpanan karbon pada masing-masing gudang karbon di tipologi gambut. Pengukuran simpanan karbon dilakukan pada lima gudang karbon yakni vegetasi (tingkat permudaan pohon), serasah, tumbuhan bawah, nekromasa dan tanah. Hasil penelitian menunjukkan kandungan karbon adalah 50% dari berat kering biomassa. Kandungan karbon tidak dipengaruhi oleh gudang karbon dan tipologi gambut. Pada tanah gambut, kedalaman gambut mempengaruhi besarnya kandungan karbon sehingga besarnya faktor konversi harus memperhatikan kedalaman masing-masing tipologi gambut. Potensi simpanan karbon terbesar pada tipologi hutan sekunder dengan kedalaman gambut antara 3-3,5 m sebesar 3.722,08 Mg/ha sedangkan potensi simpanan karbon terendah pada tipologi semak belukar dengan kedalaman gambut 3-3,5 m sebesar 2243,49 Mg/ha. Pada hutan gambut, gudang karbon tanah menyumbang >95% dari simpanan karbon total. Gudang karbon nekromasa memberikan sumbangan simpanan karbon terkecil. Fraksi simpanan karbon pada masing-masing gudang karbon berturut-turut adalah tanah> vegetasi> serasah> tumbuhan bawah> nekromasa.Carbon Stocks Potential of Peatland Forests Typologies in Central KalimantanAbstractAccuracy of carbon stocks estimation can be enhanced by measuring each carbon pools in various forest peatland typologies. The carbon stocks measurement is associated with the amount of contents and fractions of carbon stocks. The research objectives were to obtain the information of carbon contents and carbon stocks potentials in each carbon pool in the peat typologies. Carbon stocks measurement was conducted in five carbon pools which were: vegetation (tree stages), litter, understory, necromass, and soil. The results showed that the carbon contents reached more than 50% of its dry weight. The carbon contents were not affected by the carbon pools and peat typologies. In the soil carbon pools, peat depth affected the amount of carbon content so that the magnitude of the conversion factor should concentrate to the depth of each peat typology. The greatest potential of carbon stocks was found in the secondary forest (3,733.08 Mg/ha) with the peat depths between 3-3.5 m, while the lowest potential of carbon stocks found in the bush typology (2243.49 Mg/ha) with the peat depths between 3-3.5 m. In the peat typology, soil carbon stocks contributed more than 95% of total carbon stocks whereas necromass carbon stocks contributed the smallest amount of carbon. The fractions of carbon stocks in each carbon pools were soil> vegetation> litter> understorey> necromass, respectively.

Spatial variability of organic and inorganic carbon stocks in Hungry Steppe (Uzbekistan)

2020 ◽  
Author(s):  
Sophia Demina ◽  
Viacheslav Vasenev ◽  
Kristina Ivashchenko ◽  
Inna Brianskaia ◽  
Bakhtiyor Pulatov ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Carbon ◽  
Soil Salinity ◽  
Inorganic Carbon ◽  
Carbon Stocks ◽  
Total Carbon ◽  
Soil Inorganic Carbon ◽  
Organic And Inorganic Carbon ◽  
Soil Carbon Stocks ◽  
Soil Inorganic

<p>Desertification is an important soil treat, affecting soil functions and ecosystem services   in arid and semiarid climate zones. Salinization is one of the principal processes which follows desertification and has a negative impact on soil properties and functions. Carbon sequestration is considered a principle soil function and the decline in soil carbon stocks in one of the main negative consequences of soil degradation. Soil salinization is caused by combination of natural factors (e.g. dry climate condition and high table of mineralized ground waters) and human activities such as improper water management. Globally, soils of the areas affected by salinization are considered to be poor in organic carbon due to low biomass and hampered microbiological activity. However, the contribution of inorganic carbon to the total carbon stocks in these areas can be comparable. Considering that soil inorganic carbon is more stable to mineralization compared to organic carbon, soil carbon stocks in saline landscape shall not be neglected.</p><p>Central Asian regions and especially the Aral Sea basin have been historically affected by desertification enhancing soil salinity. Hungry Steppe (Mirzachul) is an area of historical desertification and salinization, covering around 10000 km<sup>2</sup> at the territories of Uzbekistan, South Kazakhstan and Tajikistan. The region has a sharp continental climate with large seasonal fluctuations. Dry and semidesertic steppe vegetation dominates the natural areas (mainly coincided with high soil salinity), whereas most of the areas is managed to produce cotton, perennial grasses, melons and gourds. Soils are dominated by serozems corresponding to Calcisols in WRB soil classification. The research aimed to analyze the effect of salinization on carbon stocks in Hungry Steppe. To achieve this aim, soil carbon stocks were estimated at the four collective farms, referred as Water Consumer Assiociations (WCAs) or ‘shirkats’ in Syrdarya province: Khavast district in Yangier WCA, Mirzaobod district in Beruniy WCA  Oq Oltin district in Andijan WCA and Syrdarya district in Sobir  Rakhimov WCA. The selected sites belonged to different in land quality classes, based on the land evaluation survey carried out by the melioration expedition of the Ministry of Agriculture and Water Resources of Uzbekistan in 201,  from the lowest (Mirzaobod) to the highest (S. Rahimov). Soil pH, electroconductivity, chlorides, organic and inorganic carbon stocks and total nitrogen stocks were estimated for each of the areas. Although the internal variability in the analyzed parameters was high we clearly showed the highest stocks of soil inorganic carbon in the most salinized area, whereas the highest stocks of organic carbon were shown for the most fertile lands. However, we didn’t ding significant difference in the total carbon stocks between the sites. It can be concluded that desertification has more effect on the redistribution of organic and inorganic forms of carbon, rather than on the total carbon stocks.</p><p><strong>Acknowledgements </strong>The experimental research was performed with the support of the Russian Foundation for Basic Research, Project # 18-54-41004 and Ministry of Innovation development of the Republic of Uzbekistan, Project # MRU-SQV 86/2017. Data analysis and mapping was supported by the RUDN project “5-100”.</p>

How useful are MIR predictions of total, particulate, humus, and resistant organic carbon for examining changes in soil carbon stocks in response to different crop management? A case study

Soil Research ◽  
2013 ◽  
Vol 51 (8) ◽  
pp. 719 ◽  
Author(s):  
K. L. Page ◽  
R. C. Dalal ◽  
Y. P. Dang
Keyword(s):  
Organic Carbon ◽  
Soil Carbon ◽  
Management Practices ◽  
Crop Management ◽  
Carbon Stocks ◽  
Carbon Pools ◽  
Spectroscopic Techniques ◽  
Direct Measurements ◽  
Soil Carbon Stocks

Measures of particulate organic carbon (POC), humus organic carbon (HOC), and resistant organic carbon (ROC) (primarily char) are often used to represent the active, slow, and inert carbon pools used in soil carbon models. However, these fractions are difficult to measure directly, and mid infrared (MIR) spectroscopic techniques are increasingly being investigated to quantify these fractions and total organic carbon (TOC). This study examined the change in MIR-predicted pools of TOC, POC, HOC, and ROC in response to different crop management between two time periods (1981 and 2008) in a long-term wheat cropping trial in Queensland, Australia. The aims were (i) to assess the ability of MIR to detect changes in carbon stocks compared with direct measurements of TOC (LECO-TOC); and (ii) to assess how well the behaviour of POC, HOC, and ROC corresponded with the active, slow, and inert conceptual carbon pools. Significant declines in carbon stocks were observed over time using both LECO-TOC and MIR-predicted stocks of TOC, POC, HOC, and ROC, although MIR-TOC under-estimated loss by 27–30% compared with LECO-TOC. The decline in MIR-POC and MIR-HOC was consistent with the expected behaviour of the active and slow conceptual pools; however, the decline in ROC was not consistent with that of the inert pool. In addition, MIR measurements did not accurately detect differences in the rate of carbon loss under different crop management practices.

Litterfall and Decomposition in Relation to Soil Carbon Pools Along a Secondary Forest Chronosequence in Puerto Rico

Ecosystems ◽  
2008 ◽  
Vol 11 (5) ◽  
pp. 701-714 ◽  
Author(s):  
Rebecca Ostertag ◽  
Erika Marín-Spiotta ◽  
Whendee L. Silver ◽  
Jodie Schulten
Keyword(s):  
Puerto Rico ◽  
Soil Carbon ◽  
Secondary Forest ◽  
Carbon Pools ◽  
Soil Carbon Pools

Soil carbon stock in balsa wood after fertilization strategies

2021 ◽  
Vol 56 ◽  
Author(s):  
Sandro Marcelo Caravina ◽  
Maurel Behling ◽  
Cornélio Alberto Zolin ◽  
Ciro Augusto de Souza Magalhães ◽  
Onã da Silva Freddi ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon Stock ◽  
Carbon Stocks ◽  
Total Carbon ◽  
Native Forest ◽  
Balsa Wood ◽  
Soil Carbon Stock ◽  
Soil Biomass ◽  
Soil Carbon Stocks ◽  
Fertilization Level

Abstract: The objective of this work was to evaluate whether balsa wood plantation and its fertilization can improve soil carbon stocks. Total carbon stocks in the soil-biomass system, at 0.0-0.30 m soil depths, were evaluated under three fertilization strategies, after three and seven years, and compared with carbon stocks from native forest and degraded pasture. At the highest fertilization level, balsa wood showed a carbon stock similar to that of the native forest (65.38 Mg ha-1) and, after seven years, it increased carbon stock by 18% in the soil, and by 42% in the soil-biomass system.

scholarly journals Windthrows increase soil carbon stocks in a central Amazon forest

2016 ◽  
Vol 13 (4) ◽  
pp. 1299-1308 ◽  
Author(s):  
Leandro T. dos Santos ◽  
Daniel Magnabosco Marra ◽  
Susan Trumbore ◽  
Plínio B. de Camargo ◽  
Robinson I. Negrón-Juárez ◽  
...  
Keyword(s):  
Carbon Content ◽  
Soil Carbon ◽  
Tree Mortality ◽  
Clay Content ◽  
Carbon Stocks ◽  
Short Term ◽  
Central Amazon ◽  
Soil Carbon Stocks ◽  
Soil Clay ◽  
Soil Clay Content

Abstract. Windthrows change forest structure and species composition in central Amazon forests. However, the effects of widespread tree mortality associated with wind disturbances on soil properties have not yet been described in this vast region. We investigated short-term effects (7 years after disturbance) of widespread tree mortality caused by a squall line event from mid-January of 2005 on soil carbon stocks and concentrations in a central Amazon terra firme forest. The soil carbon stock (averaged over a 0–30 cm depth profile) in disturbed plots (61.4 ± 8.2 Mg ha−1, mean ±95 % confidence interval) was marginally higher (p =  0.09) than that from undisturbed plots (47.7 ± 13.6 Mg ha−1). The soil organic carbon concentration in disturbed plots (2.0 ± 0.17 %) was significantly higher (p < 0.001) than that from undisturbed plots (1.36 ± 0.24 %). Moreover, soil carbon stocks were positively correlated with soil clay content (r2 =  0.332, r =  0.575 and p =  0.019) and with tree mortality intensity (r2 =  0.257, r =  0.506 and p =  0.045). Our results indicate that large inputs of plant litter associated with large windthrow events cause a short-term increase in soil carbon content, and the degree of increase is related to soil clay content and tree mortality intensity. The higher carbon content and potentially higher nutrient availability in soils from areas recovering from windthrows may favor forest regrowth and increase vegetation resilience.

Conversion of secondary forest into agroforestry and monoculture plantations in Amazonia: consequences for biomass, litter and soil carbon stocks after 7 years

2002 ◽  
Vol 163 (1-3) ◽  
pp. 131-150 ◽  
Author(s):  
Götz Schroth ◽  
Sammya Agra D’Angelo ◽  
Wenceslau Geraldes Teixeira ◽  
Daniel Haag ◽  
Reinhard Lieberei
Keyword(s):  
Soil Carbon ◽  
Secondary Forest ◽  
Carbon Stocks ◽  
Soil Carbon Stocks

Predicted consequences of increased rainfall variability on soil carbon stocks in a semiarid environment

2016 ◽  
Vol 67 (1) ◽  
pp. 61-69
Author(s):  
M Forouzangohar ◽  
R Setia ◽  
DD Wallace ◽  
CR Nitschke ◽  
LT Bennett
Keyword(s):  
Soil Carbon ◽  
Rainfall Variability ◽  
Carbon Stocks ◽  
Semiarid Environment ◽  
Soil Carbon Stocks

Changes in soil carbon stocks under plantation systems and natural forests in Northeast India

2021 ◽  
Vol 446 ◽  
pp. 109500
Author(s):  
Gaurav Mishra ◽  
Avishek Sarkar ◽  
Krishna Giri ◽  
Arun Jyoti Nath ◽  
Rattan Lal ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Northeast India ◽  
Carbon Stocks ◽  
Natural Forests ◽  
Soil Carbon Stocks
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