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Low carbon storage of woody debris in a karst forest in southwestern China
Yangyang Wu;  Libin Liu;  Chunzi Guo;  Zhonghua Zhang;  Gang Hu;  Jian Ni
2019
Source PublicationActa Geochimica
Volume38Issue:4Pages:576-586
Abstract

The properties of woody debris (WD) vary across different forests under various soil conditions. Owing to the relatively shallow and low amounts of soils on karst terrains, it is necessary to determine the WD carbon inventory of karst forests. In this study, we recorded WD with a basal diameter for standing snags and the large-end diameter for fallen logs of ≥ 1 cm. The carbon density of WD in a secondary karst mixed evergreen and deciduous broad-leaved forest that had been clear-cut 55 years ago in southwestern China were inventoried in a 2 ha plot. Woody debris carbon density calculated using specific gravity and carbon concentration was 4.07 Mg C ha−1. Woody debris with diameters ≥ 10 cm (coarse WD) constituted 53.8% of total carbon storage whereas WD < 10 cm in diameters (fine WD) accounted for more pieces of WD (89.9%). Lithocarpus confinis contributed the most WD carbon (26.5%). Intermediate decayed WD was relatively more abundant, but WD with final decay contributed the least to the total pieces of WD (6.7%). The contribution of WD to carbon storage of karst forest was low compared to other forests worldwide. Significant positive correlations were found between WD carbon and biodiversity (R2 = 0.035, p < 0.01) and elevation (R2 = 0.047, p < 0.01) and negative correlations was found in outcrop coverage (R2 = 0.034, p < 0.01). Further studies are needed to elucidate the ecological functions of WD to better understand their roles in maintaining biodiversity, enhancing productivity, and controlling vegetation degradation in karst forest ecosystems.

KeywordSecondary Forest fine Woody Debris coarse Woody Debris dead Wood karst subtropical China
Indexed ByEI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/10185
Collection环境地球化学国家重点实验室
Affiliation1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Lincheng West Road 99, Guiyang 550081, China
2.University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China
3.Puding Karst Ecosystem Research Station, Chinese Academy of Sciences, Puding, Anshun 562100, China
4.College of Chemistry and Life Sciences, Zhejiang Normal University, Yingbin Avenue 688, Jinhua 321004, China
5.Haihe River Water Resources Protection Bureau, Haihe River Water Conservancy Commission, The Ministry of Water Resources of the People’s Republic of China, Longtan Road 15, Tianjin 300170, China
6.School of Enviroment and Life Science, Guangxi Teachers Education University, Mingxiu East Road 175, Nanning 530001, China
7.Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, Mingxiu East Road 175, Nanning 530001, China
Recommended Citation
GB/T 7714
Yangyang Wu;Libin Liu;Chunzi Guo;Zhonghua Zhang;Gang Hu;Jian Ni. Low carbon storage of woody debris in a karst forest in southwestern China[J]. Acta Geochimica,2019,38(4):576-586.
APA Yangyang Wu;Libin Liu;Chunzi Guo;Zhonghua Zhang;Gang Hu;Jian Ni.(2019).Low carbon storage of woody debris in a karst forest in southwestern China.Acta Geochimica,38(4),576-586.
MLA Yangyang Wu;Libin Liu;Chunzi Guo;Zhonghua Zhang;Gang Hu;Jian Ni."Low carbon storage of woody debris in a karst forest in southwestern China".Acta Geochimica 38.4(2019):576-586.
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