General speaking, given g, the conditional g-evaluation system is usually not homogeneous, additional or linear, this yields a natural question: what conditions can be imposed on the generator g such that these properties hold true? The aim of this paper is to answer this question.

Homogeneous, Additional and Linear g-evaluation;

In this paper,the contingent valuation method(CVM) was inducted into research field of agricultural water price of irrigation district for the first time in China.

For this reason,this paper discusses mainly the merit of endangered species and the reliability of Contingent Valuation Method(CVM).

The application of contingent valuation method(CVM-WTP) to Maqu grassland ecosystem restoration;

The double-bounded dichotomous discrete contingent valuation method recommended by US NOAA was applied to evaluate health gains from air quality improvement in Beijing.

Contingent valuation method(CVM)is the worldwide used method to value loss caused by environmental pollution.

Applications of contingent valuation method in evaluation of non-market values;

The contingent valuation method (CVM) is one of the most dominating and standard techniques for eliciting the willingness to pay (WTP) for the ecosystem services provided by environment and resources.

The contingent valuation method(CVM) is a direct interview approach that can be used to provide acceptable assessment of the economic value of environmental goods or services.

The paper discusses Contingent Valuation Method(CVM) as a useful method for evaluating public products and its application to E-government administration evaluation.

This paper took an analysis of Yellow River environment population for three years,as well as based on a method of evaluating non-market goods and services evaluation-contingent evaluation method(CVM),designed and surveyed willingness to pay(WTP) of residents to recover environment Lanzhou Yellow River.