期刊
ENVIRONMENTAL RESEARCH LETTERS
卷 17, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1748-9326/ac3871
关键词
carbon sink; climate change; land use; land cover change; rising CO2; ecological restoration projects; carbon source
资金
- National Major Research Program of China [2017YFA0604702]
- National Natural Science Foundation of China [71874182]
- Strategic Priority Program of the Chinese Academy of Sciences [XDA26010103]
- Youth Innovation Promotion Association, Chinese Academy of Sciences
This study, using a remote sensing data-driven model, examined the impacts of climate change, rising CO2, and ecological restoration projects (ERPs) on the regional carbon budget in the Beijing-Tianjin Sand Source Control Project zone. The results showed carbon losses due to climate change, while ERPs and rising CO2 made significant contributions to carbon sinks.
The impact of climate change, rising CO2, land-use/land-cover change and land management on the carbon cycle in terrestrial ecosystems has been widely reported. However, only rarely have studies have been conducted to clarify the impact of climate change and rising CO2 on the carbon sink contributed by ecological restoration projects (ERPs). To better understand the impact of climate change and rising CO2 on ERPs, we took the Beijing-Tianjin Sand Source Control Project zone as an example to set up different scenarios to distinguish the confounding effects of these factors on the regional carbon budget based on a remote sensing data-driven model. Compared with business as usual, our results show that climate change caused a carbon loss of 78.97 Tg C. On the contrary, ERPs contributed a carbon sink of approximately 199.88 Tg C in forest and grassland. Furthermore, rising CO2 also contributed an additional carbon sink of 107.80 Tg C. This study distinguished the individual effects of different factors, and clarified the net carbon sink contributed by ERPs and rising CO2 and their significance for enhancing the regional carbon sink and reversing the adverse effects of climate change on the carbon sink. Furthermore, ERPs can sequester carbon more effectively and faster compared with rising atmospheric CO2 concentration.
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