Based on the information from forest resources distribution maps of Luoning County of1983 and 1999, six indices were used to analyze spatial patterns and dynamics of forest landscapesof the typical region in the middle of the Yihe-Luohe river basin. These indices include patchnumber, mean patch area, fragment index, patch extension index, etc. The results showed that: (1)There was a rapid increase in the number of patch and total area from 1983 to 1999 in the studyarea. The fragment degree became very high. (2) The area of all the forest patch types had witnessedgreat changes. The fractal degree of each forest patch type became big from 1983 to 1999. The meanextension index of Robinia pseudoacacia forest, non-forest, shrub forest, sparse forest, and Quercusspecies forest increased rapidly, but that of economic forest became zero. The fractal dimension eachshowed that forest coverage has been promoted. (3) The changes of landscape patterns were differentin different geomorphic regions. From 1983 to 1999 the vegetation cover area, the gross number andthe density of patch, diversity and evenness of landscape were all reduced greatly in gullies andravines, but the maximum area and the mean area of patch types were increased. In hilly region,both the forest cover area and the number of patch increased from 1983 to 1999, but the mean areaof patch was reduced greatly. In mountain region, even though the area under forest canopy reducedfrom 1983 to 1999, the patch number was increased greatly, the mean area of all patch types wasreduced, the extension index, diversity index and evenness index of landscape were all increased.Furthermore, because of different types of land use, human activity and terrain, the vegetationchanges on northern and southern mountain slopes were different. According to these analyses, themain driving forces, such as the policies of management, market economy, influence of humanactivities etc. are brought out.