Quantifying the biomass of Australian subtropical woodlands using SAR inversion models
نویسندگان
چکیده
This paper presents an approach to quantifying the biomass (crown and stem) and structure of mixed species woodlands in Australia that is based on an inversion algorithm for S A R data. When applied to AIRSAR data acquired in 2000 over selected woodlands in Queensland, a close correspondence with ground-based estimates of biomass was observed.
منابع مشابه
Retrieving Tree Heights in African Savanna Woodlands Using Three Stage
African savanna woodlands have an unpredictable spatial and temporal variability of woody biomass densities as a result of the interplay of rainfall, soil nutrients, fire, people and herbivores. These woodlands are characterised by heterogeneous species distribution with irregular vertical structures. A large percentage of rural communities in southern Africa rely on communal woodlands to meet ...
متن کاملEstimating Potential Woody Biomass in Communal Savanna Woodlands from Synthetic Aperture Radar (SAR)
Recent developments in Synthetic Aperture Radar (SAR) technologies have shown their potential for assessing and quantifying above-ground biomass (AGB) at landscape levels in different biomes. This paper examines the application of full polarimetric data to retrieve information related to potential woody biomass in sparse communal savanna woodlands in southern Africa using the Advanced Land Obse...
متن کاملResearch on Inversion Models for Forest Height Estimation Using Polarimetric Sar Interferometry
The forest height is an important forest resource information parameter and usually used in biomass estimation. Forest height extraction with PolInSAR is a hot research field of imaging SAR remote sensing. SAR interferometry is a well-established SAR technique to estimate the vertical location of the effective scattering center in each resolution cell through the phase difference in images acqu...
متن کاملAbove Ground Biomass estimation from SAR vertical reflectivity profiles
First attempts for the estimation of above ground forest biomass (AGB) by means of SAR, have used allometric equations to calculate biomass from the estimated PolInSAR forest height. However, changes in forest density or structure bias the known allometric relations. Today, remote sensing systems like SAR are able to measure additional parameters like vertical forest structure [1] [2]. In this ...
متن کاملRice biomass retrieval from advanced synthetic aperture radar image based on radar backscattering measurement
A biomass inversion algorithm based on a semi-empirical scattering model has been developed by using the simultaneous observation data, which are obtained by ground-based and space-based scatterometers during the rice-growing season. Three steps are applied to build the algorithm: (1) the backscattering coefficients are collected in eight acquisitions at different growth periods. Meanwhile, the...
متن کامل