关键词: 甜菜夜蛾, 甜菜夜蛾, 性诱剂, 应用技术

Abstract:

Precisely evaluating the historical land use is of great importance to promote sustainable usage of urban land resources. Based on nearly 30 years 4 periods high-resolution landsat satellite remote sensing data, and supported by RS and GIS, the spatio-temporal characteristics of land use change in Hefei area were analyzed, also the drive factors of land use change were discussed. The results showed that between 1970s and 1980s, the land use change was relatively slow, while after 1990s, the change became more apparent: the area of cropland was seriously reduced, and the areas of urban, industry and traffic significantly increased. Accompanying with rapid progress on urban industrial modernization, the problems about land use area reduction and population increase became more and more severe. Over all, the transformation from non-urban land use to urban land use was the major characteristic of land use change in Hefei city, and it was affected mainly by the population, economy, politics, transportation and many other factors.