Cultivated land is the fundamental guarantee of food security, and saline-alkali affects quality cultivated to varying degrees. It great significance study improvement measures solve problem utilization, promote healthy development agriculture animal husbandry, improve land. The author has sorted out relevant literature reports on methods technologies at home abroad in recent years, introduced ...

Since 1952, U.S. timberland has decreased by about 20 million acres, with about one-quarter of the reduction in the South. Although some of the timberland has been converted to urban and developed uses, larger amounts of land shifted uses between forest and agriculture because of changes in product markets and policy conditions. We summarize area trends for major land uses, examine recent polic...

ABSTRACT: The MODIS images have been useful for a wide range of land, ocean and atmosphere phenomena. However, 1km resolution would not be enough to detect land changes for small areas comprised of various land cover types. For this study, wavelet-based fusion and adaptive regression model were applied for improvement MODIS five 500m bands, and outputs are compared by some evaluation indicators...

European legislation calls for a well-planned sustainable development. As such, it has to in‐ clude a social, economic as well as an environmental dimension. According to Agenda 21 (http://www.un.org/esa/dsd/agenda21/), countries should undertake efforts to build up a comprehensive national inventory of their land resources in order to establish land informa‐ tion systems. The overall objective...