摘要
具有精细的光谱分辨率,可获取地物纳米级连续光谱信息的高光谱技术以其简便、快速、精度高和无损等优势成为获取土壤有机质(soil organic matter,SOM)含量的重要手段,在精确农业发展中发挥着重要作用。本文阐述了高光谱反演土壤有机质的机理,概述了土壤有机质含量的光谱反射特征,包括不同土壤类型、不同土壤有机质含量的光谱响应波段,以及土壤有机质含量的光谱反演方法和模型的研究进展。进一步分析了土壤有机质光谱特征研究中存在的问题并对发展趋势进行了展望和分析,以期为以后的研究提供一定的参考。
Hyperspectral technology is playing an important role in precision agriculture.With high spectral resolution and continuous spectral information of objects in nanoscale,it has become a reliable means of monitoring soil organic matter(SOM)for its simplicity,rapidity,high precision and non-destructiveness measurement.This article explains the mechanism of predicating SOM content with hyperspectral technology and summarizes the spectral reflection characteristics of SOM,including the spectral sensitive bands of different soil types,different SOM content,and the modeling methods in predicating SOM.Furthermore,it points out the current problems in the study of hyperspectral characteristics of SOM and shows the development trend of this technology,in order to provide some reference for future research.
作者
吴裕
申广荣
刘璐
支月娥
WU Yu;SHEN Guang-rong;LIU Lu;ZHI Yue-e(Research Center for Low-Carbon Agriculture,School of Agriculture and Biology,Shanghai Jiaotong University, Shanghai 200240,China;Shanghai Urban Forest Ecosystem Research Station of National Positioning and Observation,State Forestry Administration,Shanghai 200240,China;Key Laboratory of Urban Agriculture(South),Ministry of Agriculture,Shanghai 200240,China)
出处
《上海交通大学学报（农业科学版）》
2019年第4期37-44,共8页
Journal of Shanghai Jiaotong University(Agricultural Science)
基金
国家重点研发计划(2017YFD0800204)
上海交大农工交叉项目(Agri-X2015004)
关键词
土壤有机质
高光谱
遥感
特征波段
反演方法
soil organic matter
hyperspectral soil
remote-sensing
sensitive band
modeling method
