在成都平原的土地碳库存的时空空间动态和影响因素使用综合模型
Jie Tang1,2, Wenfu Peng3,4
1The Institute of Geography and Resources Science, Sichuan Normal University, Chengdu, 610068, China.
Scientific reports
|April 2, 2025
概括
城市扩张显著减少了土地碳储量. 保护战略对于减轻损失和实现中国的目标至关重要.
科学领域:
- 生态经济学生态经济学
- 环境科学环境科学
- 地理信息科学 地理信息科学
背景情况:
- 土地碳库存的动态对于可持续的土地利用和生态保护至关重要,特别是在快速城市化的情况下.
- 了解这些动态支持中国雄心勃勃的碳峰值 (2030) 和碳中和 (2060) 目标.
研究的目的:
- 调查土地利用变化对成都平原地区碳封存的影响.
- 预测未来的土地利用变化及其在各种发展情景下对碳储量的影响.
- 确定影响碳库存动态及其相互作用的关键驱动因素.
主要方法:
- 利用2000-2020年高分辨率的土地使用数据 (30m).
- 使用谷歌地球引擎和随机森林分类来导出土地使用数据.
- 应用了补丁生成土地使用模拟 (PLUS) 模型来预测未来的土地使用.
- 使用InVEST模型量化碳库存动态.
- 使用优化参数地理探测器 (OPGD) 模型识别的司机.
主要成果:
- 在2000年至2020年期间,由于城市扩张,耕地减少了4.14%,建筑用地增加了4.15%.
- 模拟预测到2060年,农田的持续损失 (2.80%-7.44%) 和建筑用地的显著增长 (26.89%-39.95%) 将持续.
- 森林和草原的恢复仅在生态保护和耕地保护场景下观察到.
- 总体碳库存下降了5.1%-5.5%,保护场景减轻了损失.
- 人为因素 (城市化,经济增长) 对碳库存的影响大于自然因素 (<4%).
结论:
- 保护策略是有效的减轻碳库存的损失,由城市化驱动.
- 优先考虑生态保护和耕地保护的政策干预对可持续发展至关重要.
- 结果为缓解气候变化,碳交易和快速城市化地区的可持续城市规划提供了可操作的见解.
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