森林工程2017，Vol.33Issue(2)：22-27,32,7.
基于HJ-1A星HSI数据的植被吸收光合有效辐射APAR估算
Vegetation Absorbed Photosynthetically Active RadiationEstimates Based on HJ-1A Satellite HSI Data
摘要
Abstract
In order to measure the effective absorption of solar radiation by vegetation,HSI data obtained by HJ-1A satellite was used to estimate the absorbed photosynthetic active radiation.The basis was provided for the separate calculation of sunlit and shaded APAR.The accurate parameter data was also provided for the net primary productivity calculation of forest ecosystem.This study includes three main steps:Firstly,the HSI data containing Mohe weather station were pre-processed,which includes format conversion,stripe-removing and atmospheric correction and so on.Secondly,daily solar radiation model was used to calculate the daily total solar radiation,and then the FPAR was calculated by NDVI.FPAR and solar radiation were used to obtain the APAR.Finally the processed image was obtained and the correlation between daily solar radiation model and regional meteorological station data was verified.The precision of FPAR calculated by combination of NDVI and SR was improved.The grayscale image was displayed as a thematic image when the APAR calculation of vegetation was completed.The APAR values of different regions was obtained from the thematic maps,and the annual APAR was finally calculated.关键词
HSI数据处理/太阳辐射模型/FPAR/APARKey words
HSI data processing/solar radiation model/FPAR/APAR分类
农业科技引用本文复制引用
常雅轩,于颖,崔绿园,侯吉宇,曾德伟..基于HJ-1A星HSI数据的植被吸收光合有效辐射APAR估算[J].森林工程,2017,33(2):22-27,32,7.基金项目
大学生创新项目(20150225068) （20150225068）
