摘要
以黄河下游生态脆弱区-济南南部山区为研究对象,基于区域1980~2020年6期土地利用/覆被数据,结合InVEST模型(Integrated Valuation of Ecosystem Services and Trade-offs model),分析区域土地利用/覆被和碳储量的时空分布特征和动态变化规律,研究土地利用/覆被变化对陆地生态系统碳储量的影响.结果表明,土地利用/覆被变化对碳储量的影响较为显著,1980~2005年土地利用变化较小,人类活动影响较小,由于林草地碳储量的累积,碳储量增长速度明显高于其他时期;2005~2010年城市扩张速度最快,城乡建设用地大量侵占耕地、林地和草地,使区域固碳能力明显下降;2010~2020年,由于城市化扩张限制以及植树造林等生态保护措施的实施,区域碳储量逐渐呈增长趋势;1980~2020年济南南部山区的总碳储量呈“增长-下降-增长”的趋势;并且林地是济南南部山区碳储量的主要供给者,区域碳储量值随着远离城乡居民生活中心的距离增大而增大,说明人类活动对区域碳储量有重要的影响.另外,土地利用类型的转移引起地类碳密度的变化,是区域碳储量变化的主要影响因素,土地利用类型的碳储量变化与各地类的面积变化有一定的关系.该成果可为生态脆弱区塑造良好的陆地碳汇格局提供理论依据.
The study focused on the ecologically vulnerable area in the lower reaches of the Yellow River-the southern mountainous region of Jinan.Based on land use/cover data from 1980 to 2020,this research utilized the InVEST model(Integrated Valuation of Ecosystem Services and Trade-offs model)to analyze the spatial-temporal distribution characteristics and dynamic changes of land use/cover and carbon storage in the region.The aim was to investigate the impact of land use/cover changes on terrestrial ecosystem carbon storage.The results showed that land use/cover change has a significant impact on carbon storage.During the period from 1980 to 2005,the carbon storage of forest and grassland exhibited significant accumulation due to minimal land use change and limited human activities,resulting in a notably higher growth rate of carbon storage compared to other time periods.The urban expansion rate was the fastest,and the urban and rural construction land occupied a large number of cultivated land,forest land and grassland from 2005 to 2010,which significantly reduced the regional carbon sequestration capacity.The urban expansion in the southern mountainous area of Jinan was the fastest and the urban and rural construction land occupied a large amount of cultivated land,forest land and grassland from 2005 to 2010,which significantly reduced the regional carbon sequestration capacity.The regional carbon storage was expected to gradually increase from 2010 to 2020,owing to the constraints on urbanization expansion and the implementation of ecological protection measures such as afforestation.The total carbon storage in the southern mountain area of Jinan exhibited a pattern of"increase,decrease,and subsequent increase"from 1980 to 2020.Moreover,The forest land emerged as the primary contributor to carbon storage in this region.Furthermore,the value of regional carbon storage demonstrated an upward trend with increasing distance from urban and rural residential centers,indicating significant influence of human activities on regional carbon storage.In addition,the change of land carbon density caused by the transfer of land use type is the main influencing factor of regional carbon stock change,and the change of land use type carbon stock has a certain relationship with the area change of different regions.The results can provide a theoretical basis for establishing a good terrestrial carbon sink pattern in ecologically fragile areas.
作者
王怡冰
李成亮
张鹏
侯蕾
刘仲秋
刘经强
邱庆泰
赵辰瑞
WANG Yi-bing;LI Cheng-liang;ZHANG Peng;HOU Lei;LIU Zhong-qiu;LIU Jing-qiang;QIU Qing-tai;ZHAO Chen-rui(National Engineering Research Center for Efficient Utilization of Soil Fertilizer Resources,College of Resources and Environment,Shandong Agriculture University,Tai′an 271018,China;College of Water Conservancy and Civil Engineering,Shandong Agriculture University,Tai′an 271018,China)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2024年第7期3986-3998,共13页
China Environmental Science
基金
流域水循环模拟与调控国家重点实验室开放研究基金(IWHR-SKL-202219)。
作者简介
侯蕾,责任作者,讲师,houl@sdau.edu.cn;王怡冰(1999-),女,山东济宁人,山东农业大学硕士研究生,主要从事流域碳汇变化与调控研究.wybing926@gmail.com。
