一、投资是与消费对应的一个范畴,收入、投资、消费三者互为关联在现代经济学中,对投资这一范畴的理解并无多大的分歧。什么是投资呢?投资是与消费对应的一个范畴。从量的方面讲,投资是净收入中未被消费掉的部分。即:投资=收入-消费这个公式看似简单,而它的经济学内涵却是十分丰富的。其中的收入,从整个国民经济角度来看,一般可以用国民收入这个增量指标来衡量。就一国经济而言,一定时期的国民收 First, investment is a category corresponding to consumption. Income, investment and consumption are all related to each other. In modern economics, there is not much disagreement about the understanding of investment in this field. What is investment? Investment is a category corresponding to consumption. In terms of volume, investment is the portion of net income that is not consumed. That is: investment = income - consumption of this formula seems simple, and its economic content is very rich. The income among them, from the perspective of the entire national economy, can generally be measured by the incremental indicator of national income. In the case of a country’s economy, the nationals receive a certain period of time