[碳储存进化对未来气候和盆地规模政策的反应]
Hui Wang1, Ling-Xia Wang1, Zhong-Wu Li2
1Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
Huan jing ke xue= Huanjing kexue
|December 4, 2024
概括
土地利用变化影响东湖盆地碳汇. 生态优先情景显示,碳捕获的减缓速度最慢,突出了保护对可持续发展的好处.
科学领域:
- 环境科学与生态学
- 气候变化研究 气候变化研究
- 可持续的土地管理
背景情况:
- 流域生态系统对于生态质量和可持续发展至关重要,它结合了自然,社会和经济因素.
- 东亭湖盆地 (DLB) 面临着由于经济快速增长,农业和人口压力的生态挑战,导致湿地退化和碳封存减少.
- 了解土地利用变化的影响对于实现"碳峰值和碳中和"目标以及综合流域管理至关重要.
研究的目的:
- 从流域角度探讨土地利用变化对陆地生态系统碳汇的影响,从流域角度探讨DLB的碳汇.
- 在不同的气候政策情景 (2030-2060年) 下模拟土地利用空间动态和预测碳储存变化.
- 为综合流域管理和可持续发展的决策提供科学支持.
主要方法:
- 利用PLUS (地理模拟与差异模型) 来模拟土地使用空间动态.
- 使用国家温室气体清单的IPCC指南来预测碳储存 (CS) 变化.
- 分析了三个场景:自然发展场景 (NDS),经济协调场景 (ECS) 和生态优先场景 (EPS).
主要成果:
- 在NDS下,建筑用地以耕地,森林和草原为代价扩张.
- ECS显示了与NDS相似的趋势,但减少了耕地和水资源转换.
- EPS优先考虑草原转变为森林,导致持续的森林扩张和碳汇的最逐渐下降,到2050年稳定下来.
结论:
- 所有模拟场景都预测到2060年碳汇的趋势会下降,而NDS的下降速度最快.
- 生态优先场景展示了生态保护政策的潜力,可以显著增加碳捕获.
- 可持续的碳汇需要投资于农业/草原管理,植树,减少城市扩张,并仔细规划开发区.
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