摘要: Non-urban land use planners in countries with an established history of land-related investigations face twin difficulties. These are, on the one hand, assembling, or even recognizing existence of, a vast amount detailed information and, other, appreciating their good fortune having such substantial bases for proposals and options. A visit to library, access agency files, telephone call colleague consultant, likely will turn up more data geology, climate, soil, natural vegetation, current agricultural forestry practices, yields, etc., than any non-specialist can easily assimilate.