Relationships between PALSAR backscattering data and forest above ground biomass in Japan

We investigated the relationship between HH and HV gamma naught values by PALSAR and biomass of Japanese natural forest (44 sites) to develop an effective retrieval algorithm of forest above ground biomass by using PALSAR data. As same as previous studies, our results showed a positive logarithmic relationship between PALSAR gamma naught and in situ forest biomass. HV polarized data showed smaller RMSE and higher saturation level than HH data. The results also showed that slope corrected PALSAR data had much smaller RMSE than the non-corrected data.