西北师范大学学报（自然科学版）2026，Vol.62Issue(5)：32-44,13.DOI:10.16783/j.cnki.nwnuz.2026.05.005
河湟谷地土地利用碳源-碳汇空间关联网络及碳平衡分区演变
Spatial correlation network of land use carbon sources and sinks and evolution of carbon balance zoning in the Hehuang Valley
摘要
Abstract
This study takes 18 counties(cities,districts)in the Hehuang Valley on the eastern margin of the Qinghai-Tibet Plateau as the research area.Based on multi-source datasets including land use,energy consumption,and carbon emission coefficients from 2002 to 2022,we quantified the spatiotemporal variations of carbon sources and carbon sinks at the county level.A spatial association network of carbon sources and sinks was further constructed.Combined with the ecological carrying coefficient,economic contribution coefficient,and core-periphery model,we delineated carbon balance zones to analyze the spatial differentiation patterns and evolutionary characteristics of the regional carbon budget.The results show that:from 2002 to 2022,carbon sources exhibited a pattern of rapid growth followed by a gradual decline,rising from 1 878,987.05 t in 2002 to 10 671,293.86 t in 2012,and then slightly decreasing to 10 193,849.10 t in 2022.Carbon sinks increased slowly from 309 683.05 t to 314 962.75 t over the study period.Spatially,carbon sources presented a distribution pattern of central agglomeration and expansion along river valleys,with high-value areas concentrated in the central urban districts of Xining.Carbon sinks exhibited a spatial differentiation pattern characterized by higher values in the north and lower values in the central area,with high-value sink areas mainly distributed in the northern ecological functional zones.The spatial association network of carbon sources and sinks showed a zonal distribution along the Huangshui River Valley,with highly overlapping core areas and continuously strengthening spatial correlations.The carbon balance zoning results classified the study area into eight carbon balance types,in which the proportion of peripheral high-value carbon sink zones increased,while the core carbon source zones remained concentrated in the central urban districts.These findings provide scientific support for land use optimization and low-carbon spatial regulation in alpine river valley regions.关键词
土地利用/引力模型/社会网络分析/碳平衡/河湟谷地Key words
land-use/gravity model/social network analysis/carbon balance/Hehuang Valley分类
管理科学引用本文复制引用
赵炫,蒋贵彦..河湟谷地土地利用碳源-碳汇空间关联网络及碳平衡分区演变[J].西北师范大学学报（自然科学版）,2026,62(5):32-44,13.基金项目
青海省哲学社会科学规划重点项目(24CZ011) （24CZ011）
青海民族大学教育教学改革项目(2024-ZTYJ-002) （2024-ZTYJ-002）
青海民族大学研究生创新能力提升项目(2026CXYB-07) （2026CXYB-07）
