Based on satellite remote sensing information

field investigation and collected documents in 2010

we conducted an ecological risk assessment on the Changli Gold Coast National Nature Reserve by applyingthe relative risk model(RRM).By applying this model

we obtained a relationship of relative risks

which isapplicable to comparing ecological risk degree among the assessment subdivisions in the study area.In orderto compare their relative risk values

the reserve is divided into five ecological risk districts according to theirdifferent functions

i.e.

core region

buffer region

Qilihai area

Luanhekou area and Chiyangkou area.Furthermore

we grouped the pressure sources caused by human development six risk resources

includingfishery

artificial coastline

buildings

tourists

highway and canal

and agricultural land.By modeling therisk resources

habitats

risk-exposure and ecological receptor response and analyzing the data

the relativerisk values for the five ecological risk areas and six risk resources were calculated.For the five ecological riskdistricts

the relative risk of Luanhekou is 3.45

Chiyangkou 2.46

Qilihai 2.19

core region 1.19

and buffer region 0.45.For the six risk sources

the value of fishery is 2.52

artificial coastline 2.31

buildings1.30

tourists 1.23

highway and canal 1.20

and agricultural land 1.19.The risk values in the three areashigher than the two regions indicated that the areas were not favorable for the sustainable development of theecological environment of the nature reserve.Among the six risk sources

fishery imposed highest pressure on the reserve as the major threatening factor.