The Value of Ecosystem Service and Its Dynamic Model

Yufan Zhu1, Yaoying Luo2, Hongyu Chen3, Huimin Wang3

1. School of Communication Engineering, Xidian University, Xi 'an, 710126, China

2. School of Information and Communication, University of Electronic Science and Technology, Chengdu, 611730, Chi-na

3. School of Glasgow, University of Electronic Science and Technology, Chengdu, 611730, China

Abstract: The estimate of ecosystem service value is a hotspot of ecological research. To figure out the value of ecosystem service and its feature of changes, we refer to the 17 ecosystem services which were raised by Costanza in 1997. We decide to divide the ecosystem services into 9 categories. Using the market value method, afforestation cost approach, shadow engineering approach and replacement cost approach, we could build two kinds of models which are related to both ecology and economics. First of all, we build a static model using the methods above and set some environment parameters to help we understand how we estimate the abstract ecosystem service value. Then we decide to give all the environment parameters a dynamic perform. By calculating the dynamic degree of each parameter, we could speculate the parameter in the next years. After this, we should look at how would the price change with the parameter. However, lots of data shows that there isn’t a clear relationship between them. That means we could hardly get a mathematical description of market price and these parameters. In this condition, we have to make some assumptions. The most significant one is all the price parameters obey the scale effect law. Using the same methods, we could get 9 dynamic models which are connected with time. Finally, we make the sensitivity analysis, due to the complexity of our model, it is hard to make the analysis quantitative. So we just make qualitative analysis. And we found our model is quite reliable.

Keywords: Ecosystem services; Static model; Dynamic mode; Market value method; Replacement cost approach