|
Land is the impact on human survival and development of important factors, true, accurate land survey results is an important economic and social development foundation. Past land survey results have been unable to meet the needs of the daily work of land management, geographic information systems and remote sensing because advances in technology, efficiency and accuracy for land survey has greatly improved. Therefore, a new round of land survey work is imperative. In this paper, Bayannao'er five original counties as the study area, according to the second land survey procedures, as well as with local basic overview of GIS and RS technology theory, from inside and outside the industry surveys, database development, land use analysis, and several other aspects research, mainly the following conclusions: 1. According to the land classification system, combined with the five original counties located Hetao Irrigation actual situation, identify all land classes interpret signs, man-machine interactive interpretation of the method to complete the five original counties 141 Zhang interpretation of remote sensing image; determine the best seasonal and field survey methods, and special local to the class type is judged; illustrated within the industry, data entry and basic farmland protection area delineation methods; combined firmament database software elaborated the establishment and maintenance of the database. 2 with the traditional land survey database comparison, elaborated innovations: the area of ??land survey database statistics are ellipsoidal area, so that the actual spot size and standard FIG theoretical framing area calculation method is the same; attribute structure has been improved; data unit is an executive village, town and county as a unit; coefficient for the slope and ridge deduction has been greatly improved. Inside and outside the industry through a sample survey, quality software checks to prove that five original counties of rural land survey results meet the accuracy requirements. 3 draw five original counties of rural land survey results, the total area of ??the five original counties 250,334.61 hectares of arable land area of ??152,764.09 ha, garden of 102.27 hectares, an area of ??1938.37 hectares woodland, grassland area of ??70.19 hectares of urban and industrial land area of ??15,039.02 hectares, 7,303.51 hectares of land for transportation, water conservancy facilities and 35,526.42 hectares of land for other land 37590.74 hectares. Data analysis can be learned through the five original counties of arable land than significant, but less reserve resources, forest coverage is low, no significant regional differences in land use, land utilization was 79.88%, per capita arable land of 7.61 acres of land to be further developed and utilized. 4 by past land survey data with comparison of increases and decreases throughout the class to do flow analysis, along with the rapid economic development and the improvement of living standards, farmland, urban village industrial land, traffic land area increases elsewhere class area reduction. The township land use intensity is different longxing dachangzhen greatest strength as a county center. Guiter town reclamation rate days minimum, substantially the same as the other towns. 5 The database results as a basis for evaluation of data is applied to land, land use planning, land registration, basic farmland protection, land approval, land use change. Applications in the future to ensure the accuracy of the results database, the need to strengthen management, backup at any time, to update.
|