Technology and Methodology |
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Simulation analysis of vegetation TOA reflectance based on coupled leaf-canopy-atmosphere radiative transfer model |
DIAN Yuanyong1,2, FANG Shenghui2 |
1. College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430079, China;
2. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430070, China |
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Abstract Coupled plant leaf spectral model PROSPECT, vegetation canopy spectral model SAIL(scattering by arbitrarily inclined leaves) and atmospheric radiative transfer model 6S(second simulation of the satellite signal in the solar spectrum)were used to simulate the top of atmospheric(TOA) reflectance of vegetation under different conditions. And then the influences on the spectrum of the leaf mesophyll structure parameters, chlorophyll content, leaf dry weight, leaf water content, plant canopy of LAI, solar zenith angle, aerosol optical thickness (AOT), adjacency effect and mix-pixel effect were analyzed. The research results show that the vegetation TOA reflectance error caused by the atmosphere is by far larger than the error caused by the biochemical parameters of plant itself. At the leaf level scale, the main factors causing reflectance change are chlorophyll content and mesophyll structure parameters, the effect of water content is very small on leaf reflectance in 400~900 nm. At the canopy level, the main factors causing spectral change are LAI and leaf angle distribution.
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Keywords
surface environment
dynamic change
remote sensing
monitoring
interpretation keys
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Issue Date: 03 July 2013
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[1] 杨曦光,范文义,于颖.基于PROSPECT+SAIL模型的森林冠层叶绿素含量反演[J].光谱学与光谱分析,2010,30(11):3022-3026. Yang X G,Fan W Y,Yu Y.Estimation of forest canopy chlorophyll content based on PROSPECT and SAIL models[J].Spectroscopy and Spectral Analysis,2010,30(11):3022-3026.[2] Laurent V C E,Verhoef W,Clevers J G P W,et al.Estimating forest variables from top-of-atmosphere radiance satellite measurements using coupled radiative transfer models[J].Remote Sensing of Environment,2011,115(4):1043-1052.[3] Wang Q,Li P H.Hyperspectral indices for estimating leaf biochemical properties intemperate deciduous forests:Comparison of simulated and measured reflectance data sets[J].Ecological Indicators,2011, 14(1):56-65.[4] 杨贵军,赵春江,邢著荣,等.基于PROBA/CHRIS遥感数据和PROSAIL模型的春小麦LAI反演[J].农业工程学报,2011,27(10):88-94. Yang G J,Zhao C J,Xing Z R,et al.LAI inversion of spring wheat based on PROBA/CHRIS hyperspectral multi-angular data and PROSAIL model[J].Transactions of the Chinese Society of Agricultural Engineering,2011,27(10):88-94.[5] Huemmrich K F.The GeoSail model:A simple addition to the SAIL model to describe discontinuous canopy reflectance[J].Remote Sensing of Environment,2001,75(3):423-431.[6] Bacour C,Jacquemoud S,Tourbier Y,et al.Design and analysis of numerical experiments to compare four canopy reflectance models[J].Remote Sensing of Environment,2002,79(1):72-83.[7] Jacquemoud S,Baret F.PROSPECT:A model of leaf optical properties spectra[J].Remote Sensing of Environment,1990,34(2):75-91.[8] Feret J B,Franois C,Asner G P,et al.PROSPECT-4 and 5:Advances in the leaf optical properties model separating photosynthetic pigments[J].Remote Sensing of Environment,2008,112(6):3030-3043.[9] Dawson T P,Curran P J,Plummer S E.LIBERTY-modeling the effects of leaf biochemical concentration on reflectance spectra[J].Remote Sensing of Environment,1998,65(1):50-60.[10] Jacquemoud S,Baret F,Andrieu B,et al.Extraction of vegetation biophysical parameters by inversion of the PROSPECT+SAIL models on sugar beet canopy reflectance data:Application to TM and AVIRIS sensors[J].Remote Sensing of Environment,1995,52(3):163-172.[11] Jacquemoud S,Verhoef W,Baret F,et al.PROSPECT+SAIL models:A review of use for vegetation characterization[J].Remote Sensing of Environment,2009,113(s1):S56-S66.[12] Verhoef W,Bach H.Simulation of hyperspectral and directional radiance images using coupled biophysical and atmospheric radiative transfer models[J].Remote Sensing of Environment,2003,87(1):23-41.[13] 吴朝阳,牛铮.基于辐射传输模型的高光谱植被指数与叶绿素浓度及叶面积指数的线性关系改进[J].植物学通报,2008,25(6):714-721. Wu C Y,Niu Z.Improvement in linearity between hyperspectral vegetation indices and chlorophyll content,leaf area index based on radiative transfer models[J].Chinese Bulletin of Botany,2008,25(6):714-721.[14] 施润和,庄大方,牛铮,等.基于辐射传输模型的叶绿素含量定量反演[J].生态学杂志,2006,25(5):591-595. Shi R H,Zhuang D F,Niu Z,et al.Quantitative inverseion of chlorophyll content based on radiative transfer model[J].Chinese Journal of Ecology,2006,25(5):591-595.[15] Verhoef W,Bach H.Coupled soil-leaf-canopy and atmosphere radiative transfer modeling to simulate hyperspectral multi-angular surface reflectance and TOA radiance data[J].Remote Sensing of Environment,2007,109(2):166-182.[16] Vermote E F,Tanre D,Deuze J L,et al.Second simulation of the satellite signal in the solar spectrum,6S:An overview[J].IEEE Transaction Geoscience and Remote Sensing,1997,35(3):675-686. |
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