Through the national land use change survey, monitoring and verification, we can master the annual land use changes of 31 provinces (autonomous regions and municipalities directly under the Central Government) in China (except Hong Kong, Macao and Taiwan), give full play to the active monitoring, verification and analysis functions of the state in reporting the change survey data to local governments, and maintain the current situation and accuracy of the national land survey data and the basic information of the comprehensive land and resources supervision platform. At the same time, to adapt to the new situation and new requirements of land and resources management, further expand the depth and breadth of the application of the results, and provide basic information for the daily management of land and resources such as law enforcement inspection of land and mineral satellite films, routine supervision of land, and approval of urban construction land in the State Council.
on the basis of the work in 21, we will continue to implement the national land use change survey, monitoring and verification project in 211, complete the follow-up work of the national land use change survey, monitoring and verification project in 21, start and implement the national land use change survey, monitoring and verification project in 211 in time, and complete the remote sensing data procurement and remote sensing monitoring. The work carried out includes:
Complete the follow-up work of the national land use change survey monitoring and verification project in 21
On the basis of the work in 21, continue to carry out the implementation of the national land use change survey monitoring and verification project in 211, complete the verification of the national results of the land use change survey, and complete the updating of the land use database.
first, complete the verification of the national results of the land use change survey to ensure the authenticity of the data. Using the verification mode of "three times and two times", the professional team is organized to conduct a comprehensive indoor verification of the results of the county-level land use change survey submitted by the local authorities and according to the remote sensing monitoring base map. Completed the comprehensive indoor verification of land change survey results in 2,89 counties (autonomous regions and municipalities) across the country, supervised and inspected the indoor verification results in the whole process, timely fed back the indoor verification results to the local authorities to carry out the review work, and organized and carried out the verification work on the review results. On this basis, the map spot extraction of suspected new construction land was completed. About 5% of counties (autonomous regions and municipalities) in China were selected to carry out field verification of key land types for major problems found in the field verification, and 145 counties (autonomous regions and municipalities) completed field verification in two batches. Through in-house verification, * * * extracted 274, new construction land monitoring doubt spots that may be missed by local authorities, with an area of 9.861 million mu, and extracted 26,976 suspected new construction land spots with an area of 914,8 mu. Field Verification * * * Extracted 4,69 field verification spots with an area of 361, mu, among which 349 non-construction land spots with an area of 98, mu were verified, and 1,472 spots with an area of 14, mu were confirmed to have serious problems by field verification.
Third, complete the updating of the land use database to ensure the current situation of the data. According to the unified national database quality standards, the database quality inspection software developed by the state is used to check the quality of changed data. Incremental updating is adopted, and the local authorities report the changed parts of this year's database (collectively referred to as update data packets), and after inspection, incremental updating of the national database for the second survey is realized. Completed the inspection and storage of image data of 289 counties (autonomous regions and municipalities) nationwide, with image data of about 22TB; Complete the two rounds of land survey vector data inspection, and complete the national land survey vector data storage update.
the fourth is to carry out technical support for change investigation to ensure the smooth progress of data acquisition. Completed the storage and summary of the change survey forecast data of 31 provinces (autonomous regions and municipalities directly under the Central Government) and the compilation of the report on the review of the national forecast data of the 21 land change survey, grasped the basic situation of the national land change survey data, and put forward the list of 529 county-level units with abnormal flow of the change survey data, which provided basic data for the leadership decision-making and national verification of the Ministry of Land and Resources; Through telephone or on-the-spot investigation, timely grasp and solve all kinds of problems faced by adopting new mechanisms and methods to carry out land change investigation, and provide technical guidance to relevant provinces to ensure the smooth development of land change investigation throughout the country.
In p>211, the national land use change survey, monitoring and verification project went smoothly
First, the latest national remote sensing data procurement was completed. Start the remote sensing image acquisition scheme and data plan in time, complete the declaration of imported products to the higher authorities and the approval of government procurement according to the government procurement procedures, organize data suppliers to obtain remote sensing images in time, and complete the remote sensing data procurement of 9.6 million square kilometers in four types of monitoring areas nationwide; Complete the remote sensing data collection of construction land monitoring in 16 urban centers; Carry out the development of remote sensing data procurement management system and data source research, develop the management system for the task of monitoring and verifying remote sensing data in the national land use change survey in 211, and conduct application research on new satellite data sources of remote sensing series such as Tianhui.
the second is to carry out remote sensing monitoring to serve the supervision of land and resources. Organize a professional team to complete the national remote sensing orthophoto map in 211, compare the remote sensing orthophoto map in 211 with that in 21, and monitor the newly-added construction land in the country with the county-level administrative area as the unit. In line with the principle of "monitoring one and applying one", the latest remote sensing images and monitoring information will be provided to the local authorities in time to carry out land use change surveys, and handed over to the Law Enforcement Supervision Bureau of the Ministry of Land and Resources, the State Land Supervision Bureau and other departments to organize annual land and mineral satellite law enforcement inspections and routine land inspections. Through the implementation of the national land use remote sensing monitoring task, the land use change situation covering all districts and counties of 31 provinces (autonomous regions and municipalities directly under the central government) will be grasped in time, with the focus on the new construction land. Through the supervision of national land use remote sensing monitoring results, the quality inspection and progress of remote sensing monitoring results of various units are tracked to ensure the production progress and quality of remote sensing monitoring results. Through the remote sensing monitoring of the expansion of 84 key cities in China, the expansion of 84 key cities with a population of more than 5, in China is monitored, counted and analyzed by remote sensing, which provides data and technical support for the country to grasp the expansion situation of key cities and scientifically plan cities.
the third is to complete the verification of land use change survey results and the preparation of land survey database storage. Complete the bidding work for the task undertaker and select 17 task undertakers; The implementation plan and technical standards for results verification and database storage were formulated, and technical training for task undertakers was carried out.
the fourth is to carry out the verification of "approved but unused" land in the 21 land change survey, and verify the approved and unused maps in 31 provinces (autonomous regions and municipalities directly under the Central Government) to provide services for relevant business departments of the Ministry of Land and Resources. Carry out preliminary research on the construction of basic farmland database, and make preliminary preparations for the establishment of national basic farmland database. To carry out the construction of master land use planning database (Phase I)-planning content audit, and audit the planning content of municipal master land use planning database and some county and township master land use planning databases submitted to the State Council for approval.