Guangxi Zhuang Autonomous Region is a province of karst developing very widely and intensely

with intense soil erosion intensity and fragile eco-environment. Based on the extensive factors

this article set up an evaluating index system of fragile eco-environment and established the process of the quantitative evaluation. The process includes the set up of a database

and the determination of assessment unit

assessment indicators as well as their weights

and evaluation methods for fragile eco-environment. With powerful input

spatial analysis and mapping functions of GIS

the methods including geographic data grouping and cluster analysis are adopted

quantitative assessment and qualitative assessment are performed for fragile karst eco-environment

in order to provide the scientific foundation for eco-environment construction of the karst Guangxi area.