This paper analyzed the land use change traits in Guanzhong area based on the statistical data of land use change during the year 1989 -2008, calculated the service value of ecosystem in various years, assessed its change, and studied the influence of land use change on the service function of ecosystem and their relationship in Guanzhong area. The results showed that: in the studied period, the structure of land use changed obviously, the garden use had the largest changeable rate, while the cultivated land and water area had the minimum one The change in land use led to the increase in the total value of ecosystem service by about 1.03 billion yuan, and forestland provided the greatest contribution to the total value ot ecosystem service. There were significant changes in the service value of each ecosystem. The correlation between land use change and ecological service value in Guanzhong area was negative. Because various land use types had different contributions to ecosystem service, the service function of the ecosystem in different regions was obviously changed.%以关中地区1989～ 2008年的土地利用变更数据为依据,分析了该区域土地利用变化特点,并结合本区不同时间断面的生态系统服务价值及其变化测评,对关中地区土地利用变化对生态系统服务功能的影响及其两者关系进行了研究.结果表明:在研究期内,土地利用结构变化明显,园地的土地利用变化率最大,最小的是牧草地和交通用地.土地利用变化导致生态系统服务总价值增加了约10.3亿元,其中林地对生态系统服务总价值的贡献最大,各单项服务价值变化也较明显.关中地区土地利用与生态服务变化率两者呈负相关,由于不同土地利用类型对生态系统服务贡献程度的差异,进而影响到区域不同生态系统服务功能的显著改变.
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