中国空间科学技术

中国空间科学技术 ›› 2023, Vol. 43 ›› Issue (6): 112-124.doi: 10.16708/j.cnki.1000-758X.2023.0090

• 陆地生态系统碳监测卫星专栏 • 上一篇    下一篇

陆地生态系统碳监测卫星系统设计与技术创新

曹海翊，张新伟，黄缙，贺涛，毛一岚，卢清荣   

  1. 中国空间技术研究院 遥感卫星总体部，北京100094
  • 出版日期:2023-12-25 发布日期:2023-12-12

System design and key technologies of Terrestrial Ecosystem Carbon Inventory Satellite

CAO Haiyi，ZHANG Xinwei，HUANG Jin，HE Tao，MAO Yilan，LU Qingrong   

  1. Institute of Remote Sensing Satellite，China Academy of Space Technology，Beijing 100094，China
  • Published:2023-12-25 Online:2023-12-12

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摘要： 由国家民用空间基础设施支持的陆地生态系统碳监测卫星“句芒号”瞄准森林碳汇储量评估的需求，配置了多波束激光雷达、多角度多光谱相机、超光谱探测仪和多角度偏振成像仪等4个载荷。卫星采用主被动遥感相结合的体制，综合运用激光、多角度、多光谱、超光谱、偏振等遥感手段，可实现植被生物量、叶绿素荧光、气溶胶分布的高精度定量测量。通过在轨定标和真实性检验，发布了包括森林树高、生物量、叶绿素荧光等反演产品。目前该卫星处于在轨测试阶段，预期在地面坡度小于5°的区域，树高测量精度优于1.5m，区域尺度的生物量反演精度优于85%。该卫星将在碳汇储量监测、生态资源详查、国家重大生态工程监测评价等方向上提供遥感监测服务，为“碳达峰、碳中和”战略发挥遥感力量。

关键词: 陆地生态系统碳监测卫星, 句芒号, 森林碳汇, 生物量, 叶绿素荧光

Abstract: The Terrestrial Ecosystem Carbon Inventory Satellite（TECIS），nicknamed “Goumang” ，is supported by the China National Civil Space Infrastructure Program.It focuses on evaluating the carbon sink of forests，and is equipped with 4 payloads including Carbon Sinks and Aerosol LIDAR（CASAL），Directional Multi-Spectral Camera（DMC），Fluorescence Spectral Imager（FSI）and Directional Polarization Camera（DPC）.Adopting diversified remote sensing of lidar，multi-direction，multi-spectrum，hyper-spectrum and polarization，aboveground biomass（AGB），solar-induced chlorophyll fluorescence（SIF）and aerosol content can be measured quantitatively by the combination of active and passive remote sensing.Retrieval products of TECIS are published after calibration and validation.The precision of forest mean height is better than 1.5m where ground slope is less than 5°.AGB products in regional scale are inspected to be better than 85%.TECIS will provide remote sensing service in investigating the carbon sink，ecological conditions and resources，and evaluating national major ecological projects.It will play a vital role in the carbon peaking and carbon neutrality goals of China.

Key words: Terrestrial Ecosystem Carbon Inventory Satellite（TECIS）, Goumang, carbon sink of forests, aboveground biomass （AGB）, solar-induced chlorophyll fluorescence（SIF）