林分平均高度卫星遥感新进展  

New Development of Forest Canopy Height Remote Sensing

作　　者：董立新[1,2] Dong Lixin(Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, Beijing 100081, China National Satellite Meteorological Center ,Beijing 100081, China)

机构地区：[1]中国遥感卫星辐射测量与定标重点开放实验室,北京100081 [2]国家卫星气象中心,北京100081

出　　处：《遥感技术与应用》2016年第5期833-845,共13页Remote Sensing Technology and Application

基　　金：国家气候变化专项"气候与CO2浓度变化对高寒植被影响遥感评估(CCSF-14-06)";公益性行业专项第三次青藏高原大气科学试验课题"青藏高原卫星反演产品校验外场观测试验与产品改进与资料同化研究(GYHY201406001-01)";国务院三峡办项目"三峡工程生态与环境遥感动态与实时监测(SX2002-004)"共同资助

摘　　要：林分平均高度是生态系统模型重要的输入参数之一,与生物量估算与碳循环研究高度相关。通过系统回顾林分平均高度研究的发展历史和最新进展,总结了不同传感器林分平均高度(SAR树高与LiDAR冠层高度)研究的主要模型和方法,通过单一传感器技术进行林分平均高度研究的内在特征的不同,分析了多传感器的区域林分平均高度联合反演方法的优劣性,并从科学发展趋势和社会需求出发,认识目前存在的主要问题与难点及未来面临的挑战和机遇,为今后更好地进行森林垂直结构和全球碳循环研究提供思路和借鉴。Forest canopy height is one of important input parameters of ecosystem model, and had a high correlation with the estimation of biomass and the study of carbon cycle.This paper reviewed systematically the development history and the newest trends of forest canopy height studies, summarized the mainly models and methods of forest canopy height studies among different sensors（SAR tree height and LiDAR forest canopy height）,including polarization interference model and tree height algorithm, ploarization co- herence tomography（PCT）, LiDAR canopy height estimation methods and forest canopy height profile simulation,deliberated on the intrinsic characteristics of different research techniques on the single sensor of forest canopy height,and analyzes the advantages and disadvantages of the multi-sensor joint inversion method of the regional forest canopy height.Analysis shows that the interpolation results of Kriging and CoKriging methods is not very good, hybrid model is more suitable for the space interpolation of the re- gional forest height compared with other single time or space model.From the scientific trends and social needs, the existing problems and difficulties were understudied and the new challenge and chances in forest canopy height studies were analyzed.This will provide new trajectories and new methods for further studies of forest vertical structure and global carbon cycle.

关 键 词：林分平均高度 极化干涉雷达 星载激光雷达 模型与方法 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]