摘要
黄河流域湿地资源丰富,揭示其有机碳储量特征及动态变化,对我国湿地碳储量核算具有参考意义。本研究基于PLUS-InVEST-Geodector模型系统,解析1980—2020年黄河流域湿地有机碳储量的时空格局演变特征及驱动机制,并开展多情景模拟预测。结果表明:1)过去40年受耕地扩张影响,黄河流域湿地总面积净减少1787 km^(2);不同湿地类型变化存在差异,河流湿地面积持续缩减,沼泽湿地面积先减少后增加。2)流域湿地有机碳储量呈“降低-升高-降低”的波动变化,整体减少8.27×10^(6)t;其中,河流湿地减少12.33×10^(6)t,沼泽湿地增加4.06×10^(6)t。3)高程、年降水量及归一化植被指数(NDVI)是流域湿地有机碳储量时空分异的关键驱动因素,但源区、中上游区和下游区主导驱动因子存在显著差异。4)未来情景模拟分析表明,相较自然发展情景,生态保护可显著提升黄河流域湿地碳储量。本研究揭示了黄河流域湿地生态系统碳储量时空演变规律与驱动因素,为国家“双碳”战略和黄河流域生态保护与高质量发展战略实施提供了重要基础数据。
The Yellow River Basin is endowed with abundant wetland resources.Revealing the characteristics and dynamic changes of its wetland organic carbon storage provides valuable references for wetland organic carbon storage accounting in China.Based on the PLUS-InVEST-Geodector model system,this study systematically analyzed the spatiotemporal pattern evolution characteristics and driving mechanisms of wetland organic carbon storage in the Yellow River Basin from 1980 to 2020,and carried out multi-scenario simulations and predictions.The results showed that:1)Over the past 40 years,affected by cropland expansion,the total wetland area in the Yellow River Basin had a net reduction of 1787 km^(2);there were differences in the changes of different wetland types,with the area of riverine wetlands continuously shrinking and that of marsh wetlands first decreasing and then increasing.2)The wetland organic carbon storage in the basin showed a fluctuating trend of“decrease-increase-decrease”,with an overall reduction of 8.27×10^(6)t;among them,that of riverine wetlands decreased by 12.33×10^(6)t,whereas that of marsh wetlands increased by 4.06×10^(6)t.3)Elevation,annual precipitation and the Normalized Difference Vegetation Index(NDVI)are the key driving factors for the spatiotemporal differentiation of wetland organic carbon storage in the basin,yet the dominant driving factors vary significantly among the source region,the middle and upper reaches,and the lower reaches.4)Scenario simulations analysis indicated that compared with the natural development scenario,ecological protection policies could significantly enhance the wetland organic carbon storage in the Yellow River Basin.This study reveals the spatiotemporal evolution laws and driving mechanism of organic carbon storage in wetland ecosystems across the Yellow River Basin,which provides important basic data for the implementation of China's“Dual Carbon”strategy and the strategy of ecological protection and high-quality development for the Yellow River Basin.
作者
仝珊珊
王晓杰
李雪
赵庆云
张清文
龙祥
李晶
韩广轩
宋维民
TONG Shan-shan;WANG Xiao-jie;LI Xue;ZHAO Qing-Yun;ZHANG Qing-Wen;LONG Xiang;LI Jing;HAN Guang-xuan;SONG Wei-min(School of Geography and Environment,Liaocheng University,Liaocheng 252000,Shandong,China;Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation,Chinese Academy of Sciences,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,Shandong,China;Yellow River Delta Ecology Research Station of Coastal Wetland,Chinese Academy of Sciences,Dongying 257500,Shandong,China;National Key Laboratory of Wetland Environmental Protection and Ecological Restoration,Beijing 110108,China)
出处
《湿地科学与管理》
2026年第1期53-60,77,共9页
Wetland Science & Management
基金
山东省自然科学基金(ZR2025MS414)
科技部科技基础资源调查专项(2022FY100301)。
