Simulated Reflectance of Apple Trees in Canopy Level Based on the PROSAIL Model and HJ-1A-HSI Data

作     者：Xiaoyan Guo Xicun Zhu Jingling Xiong Ruiyang Yu Xueyuan Bai Yuanmao Jiang Dongsheng Gao Guijun Yang 

作者机构：College of Resources and Environment Shandong Agricultural University Tai’an 271018 China Key Laboratory of Agricultural Ecology and Environment Shandong Agricultural University Tai’an 271018 China College of Horticulture Science and EngineeringShandong Agricultural University National Apple Engineering and Technology Research Center Tai’an 271018 China National Engineering Research Center for Information Technology in Agriculture Beijing 100097 China 

出 版 物：《遥感科学（中英文版）》 (Remote Sensing Science)

年 卷 期：2019年第7卷第1期

页      面：18-26页

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 

基　　金：the National Natural Science Foundation of China(41671346) National Key Research and Development Program of China (2017YFE0122500) the Taishan Scholar Assistance Program from Shandong Provincial Government Funds of Shandong “Double Tops” Program(SYL2017XTTD02) Shandong major scientific and technological innovation project: Research demonstration and extension of orchard irrigation and fertilization in accurate management(2018CXGC0209) 

主　　题：Apple Tree PROSAIL Model HJ-1A-HSI Canopy Reflectivity 

摘      要：Using the PROSAIL radiation transfer model and HJ-1A-HSI data to simulate the canopy reflectivity of apple trees, this study lays the foundation for the inversion of canopy parameters. Taking Qixia City of Yantai City, Shandong Province as the research area, the apple tree was taken as the research object, and the hyperspectral reflectance, LAI and sample GPS of apple canopy were measured in the field. The parameters required for the PROSAIL model were obtained by experimental methods. The model simulates the reflectivity;the HSI image data is preprocessed, and the canopy reflectivity is extracted by GPS coordinates. The PROSAIL model and the HSI image simulated reflectance were fitted to the measured apple canopy reflectivity. The decisive factor (R2) of the simulated reflectance and the measured reflectance of the PROSAIL model was 0.9944, and the relative error (RE%)was 0.1845. The HSI data simulated reflectance and measured reflectance. The coefficient of determination is 0.9714 and the relative error is 0.6202. Both have achieved good fitting effects and can be used for inversion studies of apple canopy parameters.