Abstract
• First study on assessing Palmyrah land use for carbon stock and floristic diversity • The Palmyrah land use has potential to sequester carbon in soil and biomass. • The sampling quadrats of Palmyrah had 22 species of floral species under 13 families. • The Palmyrah land use has potential to be included in the carbon credit programs. • This land use possesses adaptation and mitigation potential for climate change. The threat of global warming, biodiversity loss, and land degradation highlight the urgency of identifying sustainable land use systems that serve as climate-adaptive solutions. This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka. A total of 75 sampling quadrats (10 m × 10 m) were surveyed, collecting data on the number of Palmyrah palms and other flora species and, the height. Soil samples were collected at three depths (0–10 cm, 10–20 cm, and 20–30 cm) for organic carbon analysis. Carbon stock in biomass was estimated using standard allometric equations, and total carbon stock was calculated by summing biomass (above-ground and below-ground) and soil carbon. The study found that soil organic carbon percentage of surface layer (0 – 30 cm) in different soil series ranged from 0.31 to 1.61 %. The topmost layer (0 – 10 cm) had higher average soil organic carbon stock (12.25 Mg C ha -1 ) than sub surface layers (10 – 20 cm – 11.57 Mg C ha -1 ), 20 – 30 cm – 10.11 Mg C ha -1 ). A total of 22 floral species belonging to 13 families were identified in the surveyed quadrats. Shannan Weaver index (SWI) and the evenness were 1.2 and 0.74, respectively indicating moderate biodiversity levels. The average values of Palmyrah palm density, biomass carbon stock, soil carbon stock, and total carbon stock were 914 ± 179 stems ha -1 , 72.48 ± 15.11 Mg C ha -1 , 36.05 ± 15.81 Mg C ha -1 , and 108.53 ± 21.47 Mg C ha -1 , respectively. These findings highlight Palmyrah palm land use as a significant carbon sink with substantial potential for biodiversity conservation. Promoting this land use system could contribute to sustainable climate mitigation and adaptation strategies in regions facing similar ecological challenges.
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Claims 10
Claim · model-written summary
Soil organic carbon percentage in the 0–30 cm surface layer ranged from 0.31 to 1.61 %.
- Taxon
- Borassus flabellifer
Borassus flabellifere0 - Outcome
- soil organic carbon percentage of surface layer (0 – 30 cm)e1
- Value
- 0.31 to 1.61 %e1
- Setting
- Jaffna district of Sri Lankae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e1“soil organic carbon percentage of surface layer (0 – 30 cm) in different soil series ranged from 0.31 to 1.61 %”
Claim · model-written summary
The topmost soil layer had higher average soil organic carbon stock than the sub-surface layers.
- Taxon
- Borassus flabelliferBorassus flabellifere0
- Organ / stage
- topmost layer (0 – 10 cm)e2
- Outcome
- soil organic carbon stocke2
- Direction
- highere2
- Value
- 12.25 Mg C ha -1e2
- Comparator
- sub surface layerse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e2“The topmost layer (0 – 10 cm) had higher average soil organic carbon stock (12.25 Mg C ha -1 ) than sub surface layers”
Claim · model-written summary
A total of 22 floral species belonging to 13 families were identified in the surveyed quadrats.
- Taxon
- Borassus flabelliferBorassus flabellifere0
- Outcome
- floral speciese3
- Value
- 22 floral speciese3
- Qualifier
- belonging to 13 familiese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e3“A total of 22 floral species belonging to 13 families were identified in the surveyed quadrats”
Claim · model-written summary
The Shannon-Weaver index was 1.2, indicating moderate biodiversity.
- Taxon
- Borassus flabelliferBorassus flabellifere0
- Outcome
- Shannan Weaver index (SWI)e4
- Value
- 1.2e4
- Qualifier
- indicating moderate biodiversity levelse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e4“Shannan Weaver index (SWI) and the evenness were 1.2 and 0.74, respectively indicating moderate biodiversity levels”
Claim · model-written summary
The evenness of the floral community was 0.74, indicating moderate biodiversity.
- Taxon
- Borassus flabelliferBorassus flabellifere0
- Outcome
- evennesse4
- Value
- 0.74e4
- Qualifier
- indicating moderate biodiversity levelse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e4“Shannan Weaver index (SWI) and the evenness were 1.2 and 0.74, respectively indicating moderate biodiversity levels”
Claim · model-written summary
Palmyrah palm density averaged 914 ± 179 stems per hectare.
- Taxon
- Borassus flabelliferBorassus flabellifere0
- Outcome
- Palmyrah palm densitye5
- Value
- 914 ± 179 stems ha -1e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e5“The average values of Palmyrah palm density, biomass carbon stock, soil carbon stock, and total carbon stock were 914 ± 179 stems ha -1 , 72.48 ± 15.11 Mg C ha -1 , 36.05 ± 15.81 Mg C ha -1 , and 108.53 ± 21.47 Mg C ha -1 , respectively”
Claim · model-written summary
Average biomass carbon stock was 72.48 ± 15.11 Mg C ha-1.
- Taxon
- Borassus flabelliferBorassus flabellifere0
- Outcome
- biomass carbon stocke5
- Value
- 72.48 ± 15.11 Mg C ha -1e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e5“The average values of Palmyrah palm density, biomass carbon stock, soil carbon stock, and total carbon stock were 914 ± 179 stems ha -1 , 72.48 ± 15.11 Mg C ha -1 , 36.05 ± 15.81 Mg C ha -1 , and 108.53 ± 21.47 Mg C ha -1 , respectively”
Claim · model-written summary
Average soil carbon stock was 36.05 ± 15.81 Mg C ha-1.
- Taxon
- Borassus flabelliferBorassus flabellifere0
- Outcome
- soil carbon stocke5
- Value
- 36.05 ± 15.81 Mg C ha -1e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e5“The average values of Palmyrah palm density, biomass carbon stock, soil carbon stock, and total carbon stock were 914 ± 179 stems ha -1 , 72.48 ± 15.11 Mg C ha -1 , 36.05 ± 15.81 Mg C ha -1 , and 108.53 ± 21.47 Mg C ha -1 , respectively”
Claim · model-written summary
Average total carbon stock was 108.53 ± 21.47 Mg C ha-1.
- Taxon
- Borassus flabelliferBorassus flabellifere0
- Outcome
- total carbon stocke5
- Value
- 108.53 ± 21.47 Mg C ha -1e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e5“The average values of Palmyrah palm density, biomass carbon stock, soil carbon stock, and total carbon stock were 914 ± 179 stems ha -1 , 72.48 ± 15.11 Mg C ha -1 , 36.05 ± 15.81 Mg C ha -1 , and 108.53 ± 21.47 Mg C ha -1 , respectively”
Claim · model-written summary
Promoting Palmyrah palm land use could contribute to sustainable climate mitigation and adaptation.
- Taxon
- Borassus flabelliferBorassus flabellifere0
- Outcome
- Promoting this land use systeme7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study assessed the carbon stock and floristic diversity of the Borassus flabellifer (Palmyrah palm) land uses under 14 different soil series in the Jaffna district of Sri Lanka”
e7“Promoting this land use system could contribute to sustainable climate mitigation and adaptation strategies”