scholarly journals Estimation of tree biomass, carbon pool and net primary production of an old-growth Pinus kesiya Royle ex. Gordon forest in north-eastern India

2011 ◽  
Vol 68 (4) ◽  
pp. 727-736 ◽  
Author(s):  
Ratul Baishya ◽  
Saroj Kanta Barik
2011 ◽  
Vol 31 (4) ◽  
pp. 217-224 ◽  
Author(s):  
Li Gang ◽  
Jiang Gaoming ◽  
Li Yonggeng ◽  
Liu Meizhen

2015 ◽  
Vol 1 (01) ◽  
pp. 85-98
Author(s):  
Saroj Kanta Barik ◽  
Ratul Baishya

Ecosystem level carbon and net primary productivity (NPP) estimates for old-growth and regenerating tropical forests of India are lacking. The study was conducted to estimate ecosystem level carbon contents and NPP, based on above and below ground biomass of trees, shrubs and herbs in an old growth and a regenerating humid tropical forest of Nongkhyllem Wildlife Sanctuary, Meghalaya in north-eastern India. Soil carbon contents were also estimated in both the forest types to estimate ecosystem level carbon. The tree above ground biomass values in old-growth and regenerating forests were 313.8 and 152.4 Mg ha-1 and the below ground values were 50.8 and 30.3 Mg ha-1, respectively. The corresponding total above ground biomass values including trees, litter, herb and shrub components were 323.7 and 159.3 Mg ha-1, respectively. Of the total ecosystem biomass values of 374.5 Mg ha-1 in the old-growth forest, 86% was in the above ground and 14% was in the below ground compartment. The corresponding proportions in the regenerating forest with total biomass of 189.6 Mg ha-1 were 84% and 16%, respectively. The total ecosystem carbon contents in old-growth and regenerating forests were 265.5 and 147.8 Mg C ha-1, of which soil organic carbon was 83.2 and 55.6 Mg C ha-1, respectively that contributed 31.3% and 37.6% to the total ecosystem carbon in the respective forests. However, ecosystem NPP in the regenerating forest (18.4 Mg ha-1 yr-1) was greater than the old growth forest(13.6 Mg ha-1 yr-1)


2013 ◽  
Author(s):  
Warren D. Devine ◽  
Paul W. Footen ◽  
Robert B. Harrison ◽  
Thomas A. Terry ◽  
Constance A. Harrington ◽  
...  

1989 ◽  
Vol 19 (4) ◽  
pp. 447-454 ◽  
Author(s):  
Philip G. Comeau ◽  
James P. Kimmins

The distribution of tree biomass and the allocation of production was measured in four stands of lodgepole pine (Pinuscontorta var. latifolia Engelm.), two growing on sites with xeric soil moisture regimes and two on sites with mesic soil moisture regimes. At the time of sampling the stands were 70–78 years old. Aboveground biomass ranged from 116.5 Mg•ha−1 on one xeric site to 313.1 Mg•ha−1 on one mesic site. Stem biomass represented 68 and 73% of total tree biomass on the xeric and mesic sites, respectively. Total root biomass represented between 20 and 28% of total lodgepole pine biomass. Fine and small roots (<5 mm diameter) represented 4 and 1.5% of total tree biomass on the xeric and mesic sites, respectively. Total net primary production ranged from 7.9 Mg•ha−1•year−1 on the xeric sites to 11.9 Mg•ha−1•year−1 on the mesic sites. Stemwood production represented 20 and 27% of total net primary production on the xeric sites and 35% on both mesic sites. Belowground production represented 38 and 46% of total net primary production on the two mesic sites (4.5 and 5.5 Mg•ha−1•year−1, respectively) and 55 and 66% on the two xeric sites (4.3 and 6.3 Mg•ha−1•year−1, respectively). Fine and small roots represented 82–94% of belowground production. Production allocation was in the following order: fine and small roots > stems > foliage > coarse roots > branches, for all but the wettest site, where stem production exceeded fine and small root production.


2020 ◽  
Vol 18 (2) ◽  
pp. 2231-2245
Author(s):  
G.Z. GHAFOOR ◽  
F. SHARIF ◽  
A.U. KHAN ◽  
L. SHAHZAD ◽  
M.U. HAYYAT

Forests ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 911 ◽  
Author(s):  
Laura Ķēniņa ◽  
Ieva Jaunslaviete ◽  
Līga Liepa ◽  
Daiga Zute ◽  
Āris Jansons

Old-growth forests are widely recognised for the benefits they provide for biodiversity; however, a more comprehensive understanding of their role in climate change mitigation must still be established to find the optimal balance between different forest ecosystem services at a national or regional scale. Very few studies have assessed carbon pools in old-growth Scots pine (Pinus sylvestris L.)-dominated boreal forests, and none have been conducted in hemiboreal forests. Therefore, we assessed the carbon storage of the living tree biomass, deadwood, forest floor (soil organic horizon, including all litter and decomposed wood), and mineral soil in 25 hemiboreal old-growth (163–218 years) unmanaged Scots pine stands in Latvia. The studied stands were without known records of any major natural or human-made disturbance in the visible past. Our results show, that the total ecosystem carbon pool (excluding ground vegetation) was 291.2 ± 54.2 Mg C ha−1, which was primarily composed of living tree biomass (59%), followed by mineral soil (31%), deadwood (5%), and the forest floor (5%). Within the studied stand age group, the total carbon pool remained stable; however, interchanges among the carbon pools, i.e., living biomass and laying deadwood, did occur.


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