In order to increase the afforestation in Yancheng

we have investigated the present situation of the afforestation in 1988 in the built-up area of Yancheng by the aerial method of remote sensing. In this investigation the black-and-white air photographs taken in March

1986 were chosen. The procedure is: interpreting of black-and-white air photographs-afforestation mapping and calibrating of sample-interpreting of air photographs again-remeasuring of the area and comprehensively studying. As a result of this investigation

we have made a distributive and classificatory map （1: 4000） of the afforestation

remeasured the covered area of the afforestation

figured out the coeffcient of cover

and the ratio of the core kind of tree and evergreen/deciduous

and put forward some suggestions on raising this level of afforestation in yancheng.