GEOGRAPHY

The carbon sequestration potential of plants and soils in red cone plantations with forest age is revealed


Recently, Li Xu, a doctoral student at Dinghushan Station of the South China Botanical Garden of the Chinese Academy of Sciences, and Luis Carlos Ramos Aguila, a postdoctoral fellow, under the guidance of researcher Liu Juxiu, revealed the change of carbon sequestration rate and carbon storage of red cone plantations with forest age. The results were published in Science of the Total Environment.

Reducing fossil fuel combustion and increasing the carbon sequestration capacity of ecosystems is essential to mitigate climate change. Forest ecosystems have the highest levels of carbon sequestration among terrestrial ecosystems, so forests are considered an effective way to sequester atmospheric carbon and reverse or slow current global warming trends, especially in the context of China’s “dual carbon” goals.

Conceptual map of carbon storage in redcone plantation ecosystems of different forest ages. Photo courtesy of the research team

Red cone is a native tree species widely distributed in the south of China. However, it is not clear how the carbon sequestration capacity of red-cone plantation ecosystems changes with forest age, and the long-term carbon sequestration capacity of red-cone plantations in southern China is still very limited.

Relying on the Longyandong forest farm in Guangdong Province, the researchers measured the carbon storage of the arbor, understory vegetation, litter and soil layers of the 6, 10, 15, 25 and 34-year-old red cone plantations, and found that the carbon storage of the tree layer, understory vegetation layer, litter layer, soil layer and red cone forest ecosystem increased steadily with forest age. Studies have shown that living biomass carbon and soil carbon continue to accumulate despite the decrease in carbon sequestration rates in red cone plantations with forest age.

This study revealed the carbon sequestration potential of plants and soils of red cone plantations with forest age, and provided a reference for the assessment of plantation restoration and carbon sequestration capacity in South China. (Source: China Science News Zhu Hanbin)

Related paper information:http://dx.doi.org/10.1016/j.scitotenv.2023.164974



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