东北地区森林地上碳密度空间分布(2020)
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森林碳密度是量化区域碳储量及其变化的重要参数,然而现有研究存在分辨率粗且不确定大的问题。为此,研究基于地面调查数据,结合星载激光雷达(GEDI)和Landsat图像,利用深度学习自动挖掘了多维度图像特征,绘制了30米空间分辨率中国东北地区的森林地上碳密度。结果与野外实测数据具有较好的一致性(R2=0.84 RMSE=6.28 ),研究提供的结果将为区域碳动态监测提供基准数据。 碳密度数据单位MgC ha-1
Forest carbon density is a critical parameter for quantifying regional carbon stocks and their changes. However, existing studies suffer from issues of coarse spatial resolution and high uncertainty. To address this gap, this study utilized field survey data, combined with space-borne LiDAR (GEDI) and Landsat imagery, and employed deep learning to automatically extract multi-dimensional image features, thereby generating a map of aboveground forest carbon density in Northeast China with a spatial resolution of 30 meters. The results exhibit good consistency with field measured data (R²=0.84, RMSE=6.28). The findings of this study will provide benchmark data for regional carbon dynamic monitoring. The unit of carbon density data is MgC ha⁻¹.




