Correlation Analysis and Dynamic Evaluation on City Aquatorium Ecological Service Value - Taking Xianning City of Hubei Province as an Example

摘要

City aquatorium is an all-important subsystem in the city complex ecosystem, and it has vital function on maintaining the ecological balance and developing economy in the city. Taking Xianning City as an example, and quoted from the water resources and social economic statistical data in Xianning City from 2000 to 2008, this paper is intended to evaluate the aquatorium ecological service value in Xianning City respectively using the function analysis method and equivalent factor method. After obtaining the test results of the two methods, we calculate the comprehensive index using the weighted average, and analyze its variation trend. We do grey correlation analysis through some of the selected economic indicators and aquatorium ecological service value, so as to reveal the correlation between aquatorium ecological service value and economic development. The results show that, (1) The aquatorium ecological service value in Xianning City from 2000 to 2008 shows a rising trend; (2) Aquatorium ecological service value is the most closely related to GDP; (3) Aquatorium ecological service value in Xianning City is large and diverse. Water conservation and daily water supply are the most particularly important aspects, having significantly influence on agricultural industry, industrial production and people's daily life. Through the dynamic evaluation and correlation analysis on aquatorium ecological service value in Xianning City, we expect to provide theoretical reference to related departments when they are doing regional ecological planning and ecological construction.