Using GIS and such models as dynamic degree model

spatial differences model

change of land use degree model

analyzed the land use spatio-temporal changes in Yuyang during 1988 and 2001.Moreover

we at large analysed the driving force of land use change.The conclusions were drawn as follows:(1) During 1988 and 2001

land use changed observably.Forest land

garden land

farmland

rural residential land and city and town land

traffic land increased.Meantime

unused land

grassland and waters land decreased.The synthetic dynamic degree of land use in Yuyang per year is 0.45%

which was larger than Yulin City.(2) The spatial differences of land-use change in Yuyang is obvious.(3) The change ratio of land use degree showed that in the last 13 years the land use type was during regulation.(4) In the during of land use in Yuyang

the effects of natural factors are low.Among the driving factors

the social-economic factors

such as the population

gross production value of industry

the quantity of villages and towns corporation

urbanization level

are dominant.