关键词: 存量水平, 开采速度, 单位资源收益, 发现

Abstract: The researchers often discussed that how to get the value of the stock level of sub soil asset by net present value(NPV)when they considered the value of depletion of natural recourse in the past.They did not pay more attention to elements which impact the value of the stock level of sub soil asset.This article introduces a general formula,then focuses on the impact of each element changes on the value of stock level of sub soil asset in terms of quantity.it gives an illustrative example at the end.