OVER at Vox, J. Vernon Henderson, Adam Storeygard, and David N. Weil write that images of the earth at night can be used to refine GDP data for places that stuffer from poor on the ground data collection.
Further, difficulties in ground data collection in this region present the need for more robust physically-based interpretation of satellite data which extends beyond simple empirical correlations of reflectance data with forest characteristics.
The use of LU/LC data along with established global ESV data sets reduce the costs of ground data collection, and help in tracking of past environmental changes and acquisition of quick and reliable results that can be used for decision making processes.
The spectral history based on multitemporal Landsat imagery can be used to effectively identify mature and old-growth stands whose ages do not match with remote sensing signals due to change occurred during the time between ground data collection and image acquisition.
The statistical parameters adj.R2, RMSE and Bias presented in this study for the evaluation of AGC models are within the range reported by these other studies [33, 38, 47], though it is difficult to make a direct comparison due to differences in LiDAR sensors, pulse density testes, forest types and ground data collection.
In this paper two aspects of ground reference data collection were analyzed: (1) the positioning error of the ground plots; and (2) the optimal number of training plots.
Within the framework of a case study research design and the used of the Constructivist Grounded Theory for data collection and analysis, the theme of communication during the change process is presented through the experiences and life accounts of faculty members involved and affected by it.
Constructivist grounded theory guided data collection and analysis.
26 The principles and methods of constructivist grounded theory guided data collection and analysis.
