![]() ![]() IEEE J Sel Top Appl Earth Obs Remote Sens 6(1):35–44. ![]() IEEE Trans Geosci Remote Sens 47(12):4020–4026Īntropov O, Rauste Y, Ahola H, Hame T (2013) Stand-level stem volume of boreal forests from spaceborne SAR imagery at L-band. J Indian Soc Remote Sens 39(4):583–589Īmini J, Sumantyo JTS (2009) Employing a method on SAR and optical images for forest biomass estimation. In this regard, the current study provides a review of radar remote sensing-based studies in forest biomass estimation.Īlappat VO, Joshi AK, Krishnamurthy YVN (2011) Tropical dry deciduous forest stand variable estimation using SAR data. Identifying, understanding and solving major uncertainties in different stages of the biomass estimation procedure are critical. However, SAR data have its own limitations and complexities. These techniques could serve as valuable methods for biomass assessment of heterogeneous complex biophysical environments. ![]() Interferometric (InSAR) and polarimetric (PolSAR) SAR or a combination of the both (PolInSAR) serves as effective alternatives. Also, synergic use of multi-sensor optical and SAR has better potential than single sensor. Simultaneous use of spectral information and image texture parameters improves the biomass assessment over undulating terrain and in radical conditions. However, optical sensors face serious limitations, specifically in tropical regions, like the cloud cover that SAR can overcome along with targeting saturation and penetration aspects. Optical sensor or SAR data are suitable for extracting information about simple and homogeneous forest stand sites. Limitations of the conventional forest inventory procedures, like the extensive cost, labor and time, can be overcome through integrated geospatial techniques. Remote sensing of forest structure and biomass with synthetic aperture radar (SAR) bears significant potential for mapping and understanding forest ecological processes. In context to the climate change mitigation mechanisms like REDD (reducing emissions from deforestation and forest degradation), an extensive forest monitoring campaign is especially important. Biomass reflects the health and environmental conditions of a forest ecosystem. Forest plays a vital role in regulating climate through carbon sequestration in its biomass. ![]()
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