Generation of High Resolution Vegetation Productivity from a Downscaling Method
Accurately estimating vegetation productivity is important in the research of terrestrial ecosystems, carbon cycles and climate change. Although several gross primary production (GPP) and net primary production (NPP) products have been generated and many algorithms developed, advances are still need...
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doaj-9dc380f5fb6147a8a56318611180451a2020-11-25T01:18:05ZengMDPI AGRemote Sensing2072-42922018-11-011011174810.3390/rs10111748rs10111748Generation of High Resolution Vegetation Productivity from a Downscaling MethodTao Yu0Rui Sun1Zhiqiang Xiao2Qiang Zhang3Juanmin Wang4Gang Liu5State Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences, Beijing 100875, ChinaState Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences, Beijing 100875, ChinaState Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences, Beijing 100875, ChinaState Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences, Beijing 100875, ChinaState Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences, Beijing 100875, ChinaState Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences, Beijing 100875, ChinaAccurately estimating vegetation productivity is important in the research of terrestrial ecosystems, carbon cycles and climate change. Although several gross primary production (GPP) and net primary production (NPP) products have been generated and many algorithms developed, advances are still needed to exploit multi-scale data streams for producing GPP and NPP with higher spatial and temporal resolution. In this paper, a method to generate high spatial resolution (30 m) GPP and NPP products was developed based on multi-scale remote sensing data and a downscaling method. First, high resolution fraction photosynthetically active radiation (FPAR) and leaf area index (LAI) were obtained by using a regression tree approach and the spatial and temporal adaptive reflectance fusion model (STARFM). Second, the GPP and NPP were estimated from a multi-source data synergized quantitative algorithm. Finally, the vegetation productivity estimates were validated with the ground-based field data, and were compared with MODerate Resolution Imaging Spectroradiometer (MODIS) and estimated Global LAnd Surface Satellite (GLASS) products. Results of this paper indicated that downscaling methods have great potential in generating high resolution GPP and NPP.https://www.mdpi.com/2072-4292/10/11/1748GPPNPPdownscalingSTARFM |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tao Yu Rui Sun Zhiqiang Xiao Qiang Zhang Juanmin Wang Gang Liu |
spellingShingle |
Tao Yu Rui Sun Zhiqiang Xiao Qiang Zhang Juanmin Wang Gang Liu Generation of High Resolution Vegetation Productivity from a Downscaling Method Remote Sensing GPP NPP downscaling STARFM |
author_facet |
Tao Yu Rui Sun Zhiqiang Xiao Qiang Zhang Juanmin Wang Gang Liu |
author_sort |
Tao Yu |
title |
Generation of High Resolution Vegetation Productivity from a Downscaling Method |
title_short |
Generation of High Resolution Vegetation Productivity from a Downscaling Method |
title_full |
Generation of High Resolution Vegetation Productivity from a Downscaling Method |
title_fullStr |
Generation of High Resolution Vegetation Productivity from a Downscaling Method |
title_full_unstemmed |
Generation of High Resolution Vegetation Productivity from a Downscaling Method |
title_sort |
generation of high resolution vegetation productivity from a downscaling method |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2018-11-01 |
description |
Accurately estimating vegetation productivity is important in the research of terrestrial ecosystems, carbon cycles and climate change. Although several gross primary production (GPP) and net primary production (NPP) products have been generated and many algorithms developed, advances are still needed to exploit multi-scale data streams for producing GPP and NPP with higher spatial and temporal resolution. In this paper, a method to generate high spatial resolution (30 m) GPP and NPP products was developed based on multi-scale remote sensing data and a downscaling method. First, high resolution fraction photosynthetically active radiation (FPAR) and leaf area index (LAI) were obtained by using a regression tree approach and the spatial and temporal adaptive reflectance fusion model (STARFM). Second, the GPP and NPP were estimated from a multi-source data synergized quantitative algorithm. Finally, the vegetation productivity estimates were validated with the ground-based field data, and were compared with MODerate Resolution Imaging Spectroradiometer (MODIS) and estimated Global LAnd Surface Satellite (GLASS) products. Results of this paper indicated that downscaling methods have great potential in generating high resolution GPP and NPP. |
topic |
GPP NPP downscaling STARFM |
url |
https://www.mdpi.com/2072-4292/10/11/1748 |
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