This paper intends to address the negative impact of saturation characteristics of NDVI on the estimation of vegetation coverage.The study is focused on the efforts to derive a vegetation coverage inversion model by DVI and test it by relative truth values,and compare the accuracy of the two inversion models from three aspects:statistical index,terrain influence and different coverage influences.The re-sults show that the authenticity test must overcome the impact of scale effects,fNDVI and fDVI are not suit-able for high vegetation coverage areas;according to DVI inversion results,the overall accuracy of fDVI is 56.55%,which is better than that of fNDVI by 49.68%,and the robustness is better.
维普
万方数据