Ecosystem carbon pools in mixed stands of hardwood species and masson pine

Fan H. B., . and Liu W. F., . and Wu J. P., . and Li Y. Y., . and Yuan Y. H., . and Liao Y. C., . and Huang R. Z., . and Su X. Q., . Ecosystem carbon pools in mixed stands of hardwood species and masson pine. pp. 154-165. ISSN 0128-1283

Transformation of conifer monoculture into mixed conifer“hardwood plantations has been considered as an efficient management practice to sustain forest productivity. However effects of this management practice on ecosystem carbon sequestration are still unclear. In this study seedlings of five hardwood species (Michelia macclurei Castanopsis fissa Castanopsis sclerophylla Castanopsis kawakamii and Cyclobalanopsis myrsinaefolia) were planted separately under a Pinus massoniana (Pm) stand and designated as Pm“Mm Pm“Cf Pm“Cs Pm“Ck and Pm“Cm respectively. After 16 years of establishment total ecosystem carbon increased by 18.0 53.8 25.2 21.7 and 38.7 t ha-1 in the Pm“Mm Pm“Cf Pm“Cs Pm“Ck and Pm“Cm stands respectively compared with Pm stand. Aboveground carbon storage increased from 97.72 t ha-1 in the Pm stand to 109.52 131.31 107.77 115.76 and 123.37 t ha-1 in the five mixed stands respectively greatly due to an increase in hardwood tree biomass. Mineral soil carbon stock (0“60 cm) was 55.0 t ha-1 in the Pm stand and 61.0 72.4 69.6 58.6 and 66.8 t ha-1 in the five mixtures respectively. Our results suggested that stand improvement by underplanting could be proposed as forest management option for increasing ecosystem carbon sequestration.

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Abstract

Transformation of conifer monoculture into mixed conifer“hardwood plantations has been considered as an efficient management practice to sustain forest productivity. However effects of this management practice on ecosystem carbon sequestration are still unclear. In this study seedlings of five hardwood species (Michelia macclurei Castanopsis fissa Castanopsis sclerophylla Castanopsis kawakamii and Cyclobalanopsis myrsinaefolia) were planted separately under a Pinus massoniana (Pm) stand and designated as Pm“Mm Pm“Cf Pm“Cs Pm“Ck and Pm“Cm respectively. After 16 years of establishment total ecosystem carbon increased by 18.0 53.8 25.2 21.7 and 38.7 t ha-1 in the Pm“Mm Pm“Cf Pm“Cs Pm“Ck and Pm“Cm stands respectively compared with Pm stand. Aboveground carbon storage increased from 97.72 t ha-1 in the Pm stand to 109.52 131.31 107.77 115.76 and 123.37 t ha-1 in the five mixed stands respectively greatly due to an increase in hardwood tree biomass. Mineral soil carbon stock (0“60 cm) was 55.0 t ha-1 in the Pm stand and 61.0 72.4 69.6 58.6 and 66.8 t ha-1 in the five mixtures respectively. Our results suggested that stand improvement by underplanting could be proposed as forest management option for increasing ecosystem carbon sequestration.

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Item Type:	Article
AGROVOC Term:	Ecosystems
AGROVOC Term:	Carbon
AGROVOC Term:	Hardwood
AGROVOC Term:	Pineus
AGROVOC Term:	Plantations
AGROVOC Term:	Pinus massoniana
AGROVOC Term:	Forest management
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:26
URI:	http://webagris.upm.edu.my/id/eprint/21232

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