中文摘要：

为了了解流域的水文特性变化与土地利用的变化的关系,对湖北省漳河灌区新埠河流域1966-2010年的水文特性变化趋势进行研究。根据该流域实测雨洪资料,采用SCS模型方法分析流域不同时期的径流量和洪峰流量变化规律。结果表明,从1966-2010年间,相同频率（枯水年80%）径流量由209.2 mm减少为174.5 mm,相同前期土壤湿润情况下,洪峰流量（频率5%）由第一阶段1 175.4 m^3/s减少为第三阶段1 073.1 m^3/s,但第四阶段较第三阶段增加了46.9 m^3/s。这说明土地利用的变化对流域水文特性具有一定的影响。

英文摘要：

In order to understand the relationship between the changes in hydrological characteristics and land uses of watershed,the changes in the hydrological characteristics of the Xinbuhe basin in the Zhanghe Irrigation System of Hubei Province in 1966-2010 are studied in this paper.According to the historical rainfall and runoff data in this basin,SCS model is applied to analyze the change rules of runoff and peak discharge during different periods of the basin.The results show that with the changes in land uses,the annual runoff decreased from 209 mm in the first period to 174.5 mm in the fourth period in medium drought year（rainfall frequency = 80%）,while the maximum peak discharge decreased from 1 175.4 m3/s in the first period to 1 073.1 m3/s in the third period,but it increased by 46.9 m3/s in the fourth period with the same antecedent soil moisture in wet year（rainfall frequency = 5%）.The study indicates that changes in land uses have definite impacts on hydrological characteristics.