1.The Research Center of Soil and Water Conservation and Ecological Environment,Chinese Academy of Sciences and Ministry of Education,Yangling,Shaanxi 712100,China
2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China
3.University of Chinese Academy of Sciences,Beijing 100049,China
4.College of;Soil and Water Conservation Science and Engineering,Northwest A&F University,Yangling,Shaanxi 712100,China
5.College of Life Sciences,Northwest A&F University,State Key Laboratory of Crop Stress Resistance and High-Efficiency;Production,Shaanxi Key Laboratory of Agricultural and Environmental Microorganism,Yangling,Shaanxi 712100,China
Objective The spatiotemporal change characteristics of land use in China and each province under different carbon emission scenarios were systematically analyzed, in order to provide data support and theoretical basis for formulating regional land use planning and policies to cope with climate change, as well as future land use planning and sustainable development in China. Methods Based on land use data from 2015 to 2100, combined with land use transfer matrix and dynamic attitude index, this paper analyzed the temporal and spatial characteristics of land use change in China. Results ① Under SSP126 (low carbon emission) and SSP245 (medium carbon emission) scenarios, cultivated land, construction land and unused land showed an overall increase trend, while grassland and forest land decreased, and grassland decreased most significantly. Under the SSP585 (high carbon emission) scenario, cultivated land, grassland and construction land increase, while forest land and unused land decrease significantly. In terms of land use transfer, forest land was converted into cultivated land and grassland, and unused land and grassland were converted most frequently. ② From 2015 to 2030, the land use change is the most drastic, and the dynamic attitude under the SSP585 scenario is the highest, which is mainly manifested as the conversion of grassland and unused land into cultivated land and construction land. ③ From 2030 to 2060, the change amplitude decreases, and the change in the western region is relatively stable, and the change in Sichuan, Gansu and Heilongjiang provinces tends to be stable under the SSP245 scenario. ④ From 2060 to 2100, the impact of climate change will weaken, and the total change area will decrease significantly. Especially under the SSP585 scenario, the change of western provinces is still more obvious, while the change of eastern regions will slow down. Conclusion China’s land use change would be affected by carbon emission scenario, regional economic development and urbanization process, showing significant spatiotemporal heterogeneity and regional differences.
文献参数: 刘靖, 毋冰龙, 王红雷, 等.不同碳排放情景下中国土地利用变化的空间分异与动态分析[J].水土保持通报,2025,45(4):233-243. Citation:Liu Jing, Wu Binglong, Wang Honglei, et al. Spatial differentiation and dynamic analysis of land use change in China under different carbon emission scenarios [J]. Bulletin of Soil and Water Conservation,2025,45(4):233-243.
21世纪以来,随着城市化进程的加快,大规模的人类活动导致了土地利用的剧烈变化,进而影响了全球气候变化、物种多样性及生态环境,对全球生态系统和人类生存发展产生了显著的负面效应[1-2]。土地利用/覆被变化是一个国家或者区域生态环境变化与经济发展的主要表现和重要驱动力,对实现碳中和至关重要[3]。因此,为了实现人类与环境的可持续发展,多个研究计划应运而生,如土地利用/覆被变化科学研究计划、全球土地计划(global land project, GLP)和未来地球(Future Earth)计划等,土地利用变化问题愈发受到重视[2,4-5]。在全球气候变化和社会经济发展的双重影响下,深入研究不同碳排放情景下土地利用的时空演变特征,不仅有助于理解土地利用动态及其驱动机制,也为制定科学合理的土地利用规划、优化资源配置和应对气候变化提供重要的理论支持,为土地利用变化研究提供了重要的数据支撑[6-7]。
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