文献类型：期刊文献

英文题名：An assessment of the role of buttress roots in the carbon stocks of tropical forests

作者：Wang, Xu[1,2] Mwangi, Brian Njoroge[3,4] Zhou, Guangyi[1,2] Yang, Mengmeng[3,4] Li, Yuelin[3,4]

第一作者：王旭;Wang, Xu

通信作者：Wang, X[1];Wang, X[2];Li, YL[3];Li, YL[4]

机构：[1]Chinese Acad Forestry, Trop Forestry Res Inst, Guangzhou, Guangdong, Peoples R China;[2]Beijiangyuan Natl Forest Ecosyst Res Stn, Guangzhou, Peoples R China;[3]Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Eco, South China Bot Garden, Guangzhou, Peoples R China;[4]Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Guangzhou, Peoples R China

年份：2025

卷号：16

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;Scopus(收录号：2-s2.0-105005275861);WOS:【SCI-EXPANDED(收录号:WOS:001488136500001)】；

基金：The author(s) declare that financial support was received for the research and/or publication of this article. This work was supported by the Central Non-profit Research Institution of the Chinese Academy of Forestry [CAFYBB2021ZE001; CAFYBB2017SY017], and the National Natural Science Foundation of China [31961143023].

语种：英文

外文关键词：carbon accounting; tree biomass; forest management strategies; soil carbon content; carbon dynamics

摘要：Introduction Assessing carbon stocks in tropical forests is crucial for understanding their role in mitigating climate change. Researchers have previously underestimated key factors contributing to carbon dynamics in tropical forests. This study aims to address this knowledge gap.Methods This study collected soil samples and made physical measurements of buttressed, control, and non-buttressed trees in a tropical forest from 2020 to 2022.Results Our findings reveal that a significant proportion of trees (69.57%) had 3 to 5 buttress roots per tree. The total average biomass of the buttress roots and the above-ground portion of the trees with buttress roots was calculated to be 8.5 tonnes/ha for buttress roots and 44.04 tonnes/ha for above-ground biomass. The buttress root biomass accounted for 16.18% of the total tree biomass. It was observed that the presence of buttress roots was associated with a higher soil organic carbon content by an average of 20.8% in the upslope areas with buttress roots regardless of the season. Tree species with buttress roots had on average 20% higher organic carbon content. The upslope area of trees with buttress roots had lower soil temperature and higher soil moisture when compared to the other sectors measured in the study. Regardless of the season, the soil respiration rate in the areas without buttress roots and the control areas was higher than in those with buttress roots. The presence of buttress roots positively affected soil nutrient concentration throughout the study period.Discussion This research shows that buttress roots play a crucial role in carbon storage. By integrating buttress roots into carbon accounting models, we can obtain more accurate estimates of carbon stock potential and develop more effective conservation and restoration strategies for tropical forests.