美国本土的外国投资与投资环境的地区差异

A Preliminary Classification of the Investment Environments in U. S. A.

本文论述了美国的外国直接投资额、外国直接投资密度和外国直接投资年增长率的地区差异，并用这三个数量指标来综合评价各州投资环境的优劣，按综合得分值的高低将美国本土划分为四类区域：Ⅰ类投资环境区、Ⅱ类投资环境区、Ⅲ类投资环境和Ⅳ类投资环境区。

The regional differences in volume, density and annual growth rate of foreign investments in U. S. A. are briefly analysed. With the three variables the investment environment among the states is divided into four classes according to the evaluating values.