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    基于航空多参数遥感的滨海湿地植物固碳能力研究

    Exploring carbon sequestration capacities of coastal wetland plants based on multi-parameter airborne remote sensing

    • 摘要: 文章以江苏省滨海湿地为例,通过卫星遥感、航空多参数遥感等方法估算滨海湿地主要植被生物量,并计算其固碳能力。结果表明: ①基于航空高光谱数据完成研究区地物精细分类,提取了地表覆盖分类信息共11类,植被覆盖率约76%,人类活动区域面积占比约1.5%; ②基于航空多参数方法反演植被生物量模型精度高于卫星遥感方法,其决定系数大于0.8,均方根误差为0.25; ③通过航空多参数遥感方法计算得到研究区内互花米草与芦苇的地上固碳能力分别为0.41 kg/m2和0.58 kg/m2。研究显示,航空多参数遥感方法能准确获取湿地植被种类及固碳能力,可为研究湿地生态系统的碳循环和生境现状提供重要评价参数,精准服务湿地资源调查。

       

      Abstract: This study investigated the coastal wetland of Jiangsu Province. Using methods such as satellite remote sensing and airborne multi-parameter remote sensing, this study estimated the biomass of dominant plants and estimated their carbon sequestration capacities. Based on fine-scale classification of surface features achieved using airborne hyperspectral data, this study extracted 11 land cover types. The vegetation cover was approximately 76%, and zones with human activities accounted for about 1.5% of the study area. The model for vegetation biomass inversion using the multi-parameter airborne remote sensing demonstrated higher accuracy than that based on satellite remote sensing, with a coefficient of determination (R2) greater than 0.8 and a root mean square error (RMSE) of 0.25. As calculated using the multi-parameter airborne remote sensing, Spartina alterniflora and reed within the study area exhibited aboveground carbon sequestration capacities of 0.41 kg/m2 and 0.58 kg/m2, respectively. This study demonstrates that the multi-parameter airborne remote sensing method can accurately determine vegetation types in wetlands and carbon sequestration capacity, thus providing crucial assessment parameters for research on the carbon cycle of the ecosystem and the current status of habitats within wetlands and precisely serving wetland resource surveys.

       

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