scholarly journals Estimation of Aboveground Biomass Carbon Sequestration Potential in Rangeland Ecosystems of Iran

Ecopersia ◽  
2016 ◽  
Vol 4 (1) ◽  
pp. 1283-1294
Author(s):  
Behnaz Attaeian ◽  
Author(s):  
Dr. Nidhi Chaturvedi, ◽  

The carbon sequestration potential of an unmanaged and previously unstudied Acacia catechu in the Mukundara National Park Rajasthan, by estimating the total aboveground biomass contained in the forest. It turned into observed that the biomass, above ground comprising of stems, branches, and foliage, holds a total of 200 tons per hectare, foremost to a valued 100 tons of carbon being deposited per hectare aboveground. Acacia species consequently has the potential to play a significant function within the mitigation of climate change. The relation among the biomass, M, of each component (stems, branches, and foliage) and the diameter d, of the plant become also studied, by means of fitting allometric equations of the form M = αdβ. It was observed that all components fit this power law relation very well (R2 > 0.7), chiefly the stems (R2 > 0.8) and branches (R2 > 0.9) for which the relation is found to be almost linear.


2018 ◽  
Vol 13 (3) ◽  
pp. 465-471
Author(s):  
AKHILESH SINGH ◽  
S.K. VERMA ◽  
PRIYADARSHANI A. KHAMBALKAR ◽  
SHASHI S. YADAV ◽  
SUNIL RAJPUT

Erosion through ravines causes many problems on bank of Chambal river in Madhya Pradesh. It damages rangelands, croplands and infra-structures. Plantation of different fruit trees (Moringa oleifera, Amblica officinalis, Psidium guaijava, Ziziphuszezuba, Punica grantum, Annonasquamosa), forest / medicinal trees (Cenchr sciliaris,Azardirechtaindica, Pongamia pinnata, Albizialebbeck, Dalbergiasisso and Acacia nilotica)) and some grasses (lemon grass, pamarosa, para and napier grass) under four management modules viz. M1-diversified cropping system, M2- Agri-horticultural, M3- Horti-pastoral, M4- Silvi-medicinal and M5- Silvi-pastoral were raised during 2012 at 3x3 m spacing. Plants absorb carbon dioxide from the atmosphere by the process of photosynthesis and store the carbon (C) as biomass.The highest biomass carbon wasyielded in ModuleM3, followed by M2, M5, M4 and M1, respectively. The average biomass carbon was found highest in grasses followed by fruit and forest trees. The study shows that the carbon sequestration in soil (0-15 cm) was found highest in M4 (0.45%) followed by M5 (0.44%), M1 (0.36%), M2 (0.35%) and between depth 15-25 cm the soil sequestration was highest in M1. The percent increase in soil carbon from 2012 to 2017 was highest in M1 (0-15 cm), while in depth 15-25 cm M4 showedhighest increase in soil carbon. Available nutrient status showedtremendous changes over initial value whereas available phosphorous showed decreasing trend under all modules after six years of studies.


2021 ◽  
Author(s):  
Shanlin Tong ◽  
Weiguang Wang ◽  
Jie Chen ◽  
Chong-Yu Xu ◽  
Hisashi Sato ◽  
...  

Abstract. Documenting year-to-year variations in carbon-sequestration potential in terrestrial ecosystems is crucial for the determination of carbon dioxide (CO2) emissions. However, the magnitude, pattern and inner biomass partitioning of carbon-sequestration potential, and the effect of the changes in climate and CO2 on inner carbon stocks, remain poorly quantified. Herein, we use a spatially explicit individual based-dynamic global vegetation model to investigate the influences of the changes in climate and CO2 on the enhanced carbon-sequestration potential of vegetation. The modelling included a series of factorial simulations using the CRU dataset from 1916 to 2015. The results show that CO2 predominantly leads to a persistent and widespread increase in above-ground vegetation biomass carbon-stocks (AVBC) and below-ground vegetation biomass carbon-stocks (BVBC). Climate change appears to play a secondary role in carbon-sequestration potential. Importantly, with the mitigation of water stress, the magnitude of the above- and below-ground responses in vegetation carbon-stocks gradually increases, and the ratio between AVBC and BVBC increases to capture CO2 and sunlight. Changes in the pattern of vegetation carbon storage was linked to regional limitations in water, which directly weakens and indirectly regulates the response of potential vegetation carbon-stocks to a changing environment. Our findings differ from previous modelling evaluations of vegetation that ignored inner carbon dynamics and demonstrates that the long-term trend in increased vegetation biomass carbon-stocks is driven by CO2 fertilization and temperature effects that are controlled by water limitations.


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