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Monitoring forest health and biomass for changes over time in the global environment requires the provision of continuous satellite images. However,optical images of land surfaces are generally contaminated when clouds are present or rain occurs.
To estimate the actual reflectance of land surfaces masked by clouds and potential rain,3D simulations by the RAPID radiative transfer model were proposed and conducted on a forest farm dominated by birch and larch in Genhe City,DaXing'AnLing Mountain in Inner Mongolia,China. The canopy height model (CHM) from lidar data were used to extract individual tree structures (location,height,crown width). Field measurements related tree height to diameter of breast height (DBH),lowest branch height and leaf area index (LAI). Series of Landsat images were used to classify tree species and land cover. MODIS LAI products were used to estimate the LAI of individual trees. Combining all these input variables to drive RAPID,high-resolution optical remote sensing images were simulated and validated with available satellite images.
Evaluations on spatial texture,spectral values and directional reflectance were conducted to show comparable results.
The study provides a proof-of-concept approach to link lidar and MODIS data in the parameterization of RAPID models for high temporal and spatial resolutions of image reconstruction in forest dominated areas.
Monitoring forest health and biomass for changes over time in the global environment requires the provision of continuous satellite images. However,optical images of land surfaces are generally contaminated when clouds are present or rain occurs.
To estimate the actual reflectance of land surfaces masked by clouds and potential rain,3D simulations by the RAPID radiative transfer model were proposed and conducted on a forest farm dominated by birch and larch in Genhe City,DaXing'AnLing Mountain in Inner Mongolia,China. The canopy height model (CHM) from lidar data were used to extract individual tree structures (location,height,crown width). Field measurements related tree height to diameter of breast height (DBH),lowest branch height and leaf area index (LAI). Series of Landsat images were used to classify tree species and land cover. MODIS LAI products were used to estimate the LAI of individual trees. Combining all these input variables to drive RAPID,high-resolution optical remote sensing images were simulated and validated with available satellite images.
Evaluations on spatial texture,spectral values and directional reflectance were conducted to show comparable results.
The study provides a proof-of-concept approach to link lidar and MODIS data in the parameterization of RAPID models for high temporal and spatial resolutions of image reconstruction in forest dominated areas.
Inglada J, Hagolle O, Dedieu G (2011) A framework for the simulation of high temporal resolution image series. Paper presented at the IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 24-29
Kaartinen H, Hyyppä J, Yu X, Vastaranta M, Hyyppä H, Kukko A, Holopainen M, Heipke C, Hirschmugl M, Morsdorf F, Næsset E, Pitkänen J, Popescu S, Solberg S, Wolf BM, Wu J-C (2012) An international comparison of individual tree detection and extraction using airborne laser scanning. Remote Sensing 4(4):950-974
Li GZ, Wang HX, Zhu JJ (2009) Monthly changes of leaf area index and canopy openness of Larix olgensis in mountainous regions in east Liaoning province. J Northeast Forestry Univ 37(7):13
Liu ZL, Jin GZ (2013) Estimation of leaf area index of secondary Betula platyphylla forest in Xiaoxing' an Mountains. Acta Ecologica Sinica 33(8):9CAS
Mu X, Zhang Q, Liu Q, Pang Y, Hu K (2015) A study on typical forest biomass mapping technology of great khingan using airborne laser scanner data. Remote Sens Technol Appl 30(2):220-225
Popescu SC, Wynne RH (2004) Seeing the trees in the forest: using lidar and multispectral data fusion with local filtering and variable window size for estimating tree height. Photogrammetric Eng Remote Sens 70(5):589-604
Wu M-Q, Wang J, Niu Z, Zhao Y-Q, Wang C-Y (2012) A model for spatial and temporal data fusion. J Infrared Millimeter Waves 31(1):80-84
Xu G-c, Pang Y, Li Z-y, Zhao K-r, Liu L-x (2013) The changes of forest canopy spectral reflectance with seasons in Xiaoxing'anling. Spectrosc Spectral Anal 33(12):3303-3307
The authors gratefully acknowledge the Chinese National Basic Research Program (2013CB733401) and the Chinese Natural Science Foundation Project (41171278).
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.