Decline in Aboveground Biomass Due to Fragmentation in Subtropical Forests of China
Open Access
- 13 May 2021
- Vol. 12 (5), 617
- https://doi.org/10.3390/f12050617
Abstract
Fragmentation has long been considered the primary cause for ecosystem degradation and biodiversity loss worldwide. Forest fragmentation affects ecosystem functioning and biodiversity in multiple ways. Here, we ask how forest fragmentation influences aboveground biomass storage (AGB) in sub-tropical forests in China. We established 207 20 m × 20 m plots within 69 forest fragments of varying size. Forest fragmentation process simulation was carried out via repeated quadrat sampling using different sized quadrats in two non-fragmented stands. AGB was estimated and compared across forest fragments and quadrats with different sizes within two non-fragmented stands. Our results indicate that AGB is significantly lower in forest fragments than in quadrats within two non-fragmented forests. In addition, species richness and abundance were lower in fragmented stands, respectively. In fragmented forests, the average diameter at breast height (DBH) increased with decreasing patch size, while declined for non-fragmented plots. Species richness, abundance, and mean DBH have strongly positive effects on AGB. This was the case both in forest fragments and quadrats within two non-fragmented forests. Forest fragmentation leads to lower richness, lower abundance, and higher mean DBH in forest fragments than in the two non-fragmented forests. Our results suggest that forest fragmentation increases edge habitats, which drastically decreases forests aboveground biomass storage. These results show that land degradation not only reduces the area of forests, but also reduces the aboveground biomass carbon density of forests.Keywords
This publication has 54 references indexed in Scilit:
- Scale‐dependent relationships between tree species richness and ecosystem function in forestsJournal of Ecology, 2013
- Impacts of incentives to reduce emissions from deforestation on global species extinctionsNature Climate Change, 2012
- The fate of Amazonian forest fragments: A 32-year investigationBiological Conservation, 2011
- Rapid decay of tree-community composition in Amazonian forest fragmentsProceedings of the National Academy of Sciences of the United States of America, 2006
- Edge Influence on Forest Structure and Composition in Fragmented LandscapesConservation Biology, 2005
- Large tree mortality and the decline of forest biomass following Amazonian wildfiresEcology Letters, 2002
- Effects of area, age and diversity of forest patches in Belgium on plant species richness, and implications for conservation and reforestationBiological Conservation, 1999
- Biomass Collapse in Amazonian Forest FragmentsScience, 1997
- Research in large, long-term tropical forest plotsTrends in Ecology & Evolution, 1995
- Microenvironment variation within and among forest edge sites in the eastern United StatesBiological Conservation, 1993