Impact of resin tapping on the radial growth and climate sensitivity of naturally- regenerated Pinus roxburghii (Chir pine) in Western Nepal
The study investigated the effect of resin tapping on radial growth and climate sensitivity of naturally regenerated Pinus roxburghii (chirpine) in Western Nepal. We collected core samples (dbh>30cm) from the community forest in the Salyan district: 26 from tapped and 33 from untapped trees situa...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Trees, Forests and People |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666719325000238 |
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| author | Bipin Bhattarai Narayan Prasad Gaire Tek Maraseni Bishnu Prasad Devkota Badri Bhattarai Shankar Tripathi Kamal Raj Aryal Hari Adhikari |
| author_facet | Bipin Bhattarai Narayan Prasad Gaire Tek Maraseni Bishnu Prasad Devkota Badri Bhattarai Shankar Tripathi Kamal Raj Aryal Hari Adhikari |
| author_sort | Bipin Bhattarai |
| collection | DOAJ |
| description | The study investigated the effect of resin tapping on radial growth and climate sensitivity of naturally regenerated Pinus roxburghii (chirpine) in Western Nepal. We collected core samples (dbh>30cm) from the community forest in the Salyan district: 26 from tapped and 33 from untapped trees situated in similar climatic, topographic, and ecological conditions. A tree-ring width chronology spanning 52 years was developed for both tapped and untapped trees. Statistical analyses, such as Pearson correlation and t-test, were used. Results indicate the untapped trees exhibited significantly higher basal area increment (BAI: p < 0.05) than those of tapped trees, indicating that resin tapping negatively impacts tree growth. Furthermore, both tapped and untapped trees exhibited a positive correlation between radial growth and temperatures in May, June, July and August suggesting critical role of temperature in influencing the growth of Pinus roxburghii trees whether they have been tapped for resin or not. The rainfall in January, February, March, April, August, October, and December positively influenced the radial growth of both tapped and untapped trees, with only the rainfall in January having a significant effect on growth. Radial growth is impacted by the resin tapping while decreasing its recovery strength after stress as well. This study highlights the need for alternative resin-tapping practices that minimize negative impacts on tree growth. It also emphasizes the importance of considering rainfall and temperature patterns when planning tapping activities to ensure sustained resin production and promote tree health. |
| format | Article |
| id | doaj-art-41966779f0e54df68d8bc31dfcd61ee9 |
| institution | Kabale University |
| issn | 2666-7193 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Trees, Forests and People |
| spelling | doaj-art-41966779f0e54df68d8bc31dfcd61ee92025-02-10T04:34:59ZengElsevierTrees, Forests and People2666-71932025-03-0119100795Impact of resin tapping on the radial growth and climate sensitivity of naturally- regenerated Pinus roxburghii (Chir pine) in Western NepalBipin Bhattarai0Narayan Prasad Gaire1Tek Maraseni2Bishnu Prasad Devkota3Badri Bhattarai4Shankar Tripathi5Kamal Raj Aryal6Hari Adhikari7Institute of Forestry, Pokhara Campus, Tribhuvan University, Pokhara 33700, NepalPatan Multiple Campus, Tribhuvan University, Lalitpur 44700, NepalUniversity of Southern Queensland, Toowoomba, Queensland, 4350, AustraliaInstitute of Forestry, Pokhara Campus, Tribhuvan University, Pokhara 33700, NepalInstitute of Forestry, Pokhara Campus, Tribhuvan University, Pokhara 33700, NepalInstitute of Forestry, Hetauda Campus, Tribhuvan University, Hetauda 44200, Nepal; University of the Sunshine Coast, Graduate Research School, Sippy Downs Qld 4556 AustraliaUniversity of the Sunshine Coast, Graduate Research School, Sippy Downs Qld 4556 Australia; Forest Research and Training Center, Surkhet 21700, Karnali Province, Nepal; Corresponding authors.Forest Nepal, Amar Marg 88, Butwal, C3534, Nepal; Earth Change Observation Laboratory, Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland; Corresponding authors.The study investigated the effect of resin tapping on radial growth and climate sensitivity of naturally regenerated Pinus roxburghii (chirpine) in Western Nepal. We collected core samples (dbh>30cm) from the community forest in the Salyan district: 26 from tapped and 33 from untapped trees situated in similar climatic, topographic, and ecological conditions. A tree-ring width chronology spanning 52 years was developed for both tapped and untapped trees. Statistical analyses, such as Pearson correlation and t-test, were used. Results indicate the untapped trees exhibited significantly higher basal area increment (BAI: p < 0.05) than those of tapped trees, indicating that resin tapping negatively impacts tree growth. Furthermore, both tapped and untapped trees exhibited a positive correlation between radial growth and temperatures in May, June, July and August suggesting critical role of temperature in influencing the growth of Pinus roxburghii trees whether they have been tapped for resin or not. The rainfall in January, February, March, April, August, October, and December positively influenced the radial growth of both tapped and untapped trees, with only the rainfall in January having a significant effect on growth. Radial growth is impacted by the resin tapping while decreasing its recovery strength after stress as well. This study highlights the need for alternative resin-tapping practices that minimize negative impacts on tree growth. It also emphasizes the importance of considering rainfall and temperature patterns when planning tapping activities to ensure sustained resin production and promote tree health.http://www.sciencedirect.com/science/article/pii/S2666719325000238DendrochronologyResin tappingRadial growthClimate sensitivitySustainable forest management |
| spellingShingle | Bipin Bhattarai Narayan Prasad Gaire Tek Maraseni Bishnu Prasad Devkota Badri Bhattarai Shankar Tripathi Kamal Raj Aryal Hari Adhikari Impact of resin tapping on the radial growth and climate sensitivity of naturally- regenerated Pinus roxburghii (Chir pine) in Western Nepal Trees, Forests and People Dendrochronology Resin tapping Radial growth Climate sensitivity Sustainable forest management |
| title | Impact of resin tapping on the radial growth and climate sensitivity of naturally- regenerated Pinus roxburghii (Chir pine) in Western Nepal |
| title_full | Impact of resin tapping on the radial growth and climate sensitivity of naturally- regenerated Pinus roxburghii (Chir pine) in Western Nepal |
| title_fullStr | Impact of resin tapping on the radial growth and climate sensitivity of naturally- regenerated Pinus roxburghii (Chir pine) in Western Nepal |
| title_full_unstemmed | Impact of resin tapping on the radial growth and climate sensitivity of naturally- regenerated Pinus roxburghii (Chir pine) in Western Nepal |
| title_short | Impact of resin tapping on the radial growth and climate sensitivity of naturally- regenerated Pinus roxburghii (Chir pine) in Western Nepal |
| title_sort | impact of resin tapping on the radial growth and climate sensitivity of naturally regenerated pinus roxburghii chir pine in western nepal |
| topic | Dendrochronology Resin tapping Radial growth Climate sensitivity Sustainable forest management |
| url | http://www.sciencedirect.com/science/article/pii/S2666719325000238 |
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