您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

COUPLED ESTIMATION OF DAILY GROSS PRIMARY PRODUCTION AND EVAPOTRANSPIRATION AT 84 GLOBAL FOREST SITES

文献类型： 会议论文

第一作者： Lingxiao Huang

作者： Lingxiao Huang 1 ; Meng Liu 2 ; Yazhen Jiang 1 ; Ronglin Tang 1 ;

作者机构： 1.State Key Laboratory of Resources and Environment Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences

2.Key Laboratory of Agricultural Remote Sensing, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences

关键词： Gross primary production (GPP);Evapotranspiration (ET);Coupled estimation;The two-leaf light use efficiency model;The penman-Monteith equation

会议名称： IEEE International Geoscience and Remote Sensing Symposium

主办单位：

页码： 3741-3744

摘要： Gross Primary Production (GPP) and evapotranspiration (ET) play a critical role of the global carbon, water and energy cycle. Accurate quantification of the global GPP and ET could improve our ability to understand global climate change and energy budget. However, most of the GPP and ET remote sensing models fail to take the coupled relationship between vegetation transpiration (E_t) and photosynthesis into consideration. More importantly, these models might ignore the difference of transpiration and photosynthesis rate in different groups of leaves (sunlit and shaded). Here, we coupled the estimates of daily GPP and ET at 84 global forest sites based on the Two-Leaf Light Use Efficiency model and the Penman-Monteith equation that were linked by the Ball-Berry conductance model. The developed model was well calibrated with the root mean square error (RMSE) and the coefficient of determination (R~2) being 1.97 gC/m~2 day and 0.77 for GPP respectively, and being 21.91 W/m~2 and 0.65 for ET, respectively. In the meantime, the validation results demonstrated the good performance of the coupled model, with the RMSE and R~2 being 1.95 gC/m~2 day and 0.77 for GPP, respectively, and being 21.34 W/m~2 and 0.66 for ET, respectively.

分类号： tp7-53

  • 相关文献

[1]Jointly Assimilating MODIS LAI and ET Products Into the SWAP Model for Winter Wheat Yield Estimation. Huang, Jianxi,Ma, Hongyuan,Su, Wei,Zhang, Xiaodong,Huang, Jianxi,Ma, Hongyuan,Su, Wei,Zhang, Xiaodong,Huang, Yanbo,Fan, Jinlong,Wu, Wenbin. 2015

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台