[Objective] To protect Shengjin Lake national nature reserve

in Anhui Province

effectively. [Methods] On the basis of three periods of TM remote sensing images of Shengjin Lake national nature reserve in 1986

2002 and 2011

by using ERDAS and ArcGIS tools

in consideration of the current land use in Shengjin Lake nature reserve for supervision classification

the Shengjin Lake nature reserve was classified into three function areas

such as experimental area

core area and buffer area. The nature reserve area was divided into eight parts of construction land

grassland

cultivated land

forest land

waters

unused land

traffic land and garden plot

and the land use area was summarized. By using the hierarchical analysis and fuzzy mathematics method of land use to build ecological risk assessment model

the ecological risk index of land use was draw up. [Results] The overall risk value of Shengjin Lake was intermediate

and the ecological risk index increased gradually from 1986 to 2011. Among them

the core area of ecological risk was lower

but it also trended to increase gradually. At the same time

experimental area of ecological risk value was higher than that of the core area

and the buffer area ecological risk value variation was obvious and ecological risk of land use was serious. [Conclusion] The ecological risk of Shengjin Lake nature reserve tends to rise. Some measures should be taken to build early warning mechanism to control the ecological risk of Shengjin Lake nature reserve.