![]() While the proposed fusion technique could achieve the DEM at 3 arc seconds resolution with a lower RMSE (18.841). The resolution of the original DEM data was 15 arc seconds with a Root Mean Square Error (RMSE) of 29.408 m, and the resolution of the DEM using the classic " remove - restore " algorithm was 3 arc seconds with a RMSE of 28.563 m. The results demonstrate that the proposed technique could improve the precision and resolution of the entire topography of seabed terrain and preserve the details of the high-density area. A modified "remove - restore" algorithm was employed to fuse multiple high-precision data sources (i.e., charted depth and multibeam bathymetric data) with DEM to reconstruct the submarine topography. Here, we proposed a multi-source bathymetry fusion technique by considering the merits of multi-source data including the Digital Elevation Model (DEM), charted depth, and multibeam bathymetric data. ![]() However, the present submarine topography usually contains noise and outliers with low precision and resolution due to uncertainties in processing methods of raw measurements. Submarine topography provides essential information for various researches in oceanography and has been widely applied to the marine meteorology, marine chemistry, and physical oceanography. With the preliminary construction of natural resources survey and monitoring system and gradual improvement of territorial space planning system, geographical conditions monitoring should rely on its technical advantages, clarify its service content and objects, and build a comprehensive application framework system in the future to make it play an important role in natural resources management. In order to promote the application of geographical conditions monitoring datasets in compilation, implementation, and management of territorial space planning, it is necessary to further define its basic position in the system of natural resources survey, monitoring, and management, improve the monitoring content, optimize the classification system, and unify the technical standards. The results show that there are different degrees and types of differences in the guiding principles, composition system, and technical standards of land use classification for geographical conditions monitoring data and “two plans” land use data, which makes the former difficult to be directly applied to the compilation of territorial space planning. Finally, given the differences of data between geographical conditions monitoring and the “two plans” land use and the applicability of geographical conditions monitoring in territorial space planning, we put forward some suggestions for optimizing geographical conditions monitoring for territorial space management in the new era. This paper first analyzes the differences in land use classifications between the geographical conditions monitoring and the “two plans”, and then selects a specific experimental area in Wuhan for an empirical analysis. In order to improve the reasonableness and authority of natural resources surveys and territorial space management, with the advantages of objective and precise geographical conditions monitoring data, it is urgent to clarify the differences between geographical conditions monitoring and other natural resources surveys, so as to better serve the survey and supervision of natural resources and the management of territorial space. It is helpful to solve the overlaps and contradictions between land use planning, urban planning, and main functional area planning. ![]() ![]() In the context of China's planning system reform, territorial space planning is one of the important methods that promote the scientific management of natural resources and realize regional sustainable development.
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