摘要
区域土壤盐渍化状况研究是进行区域地下水资源合理开发和盐碱化土壤防治的依据。以山东省德州市齐河县为研究区,采用ENVI,GIS和统计学方法,分析研究区土壤盐渍化状况及地下水埋深的时空变化规律。研究表明:(1)研究区全境均有不同程度盐渍土分布,在整体空间分布上,盐渍化呈现出由东向西,由南向北,逐步减轻的趋势。(2)该区地下水位较高,埋深最浅的晏城镇(2005年年均埋深仅为0.76m),埋深最深的仁里集镇西高村(观测点2005年年均埋深达到了5.12m)。齐河县2000,2005和2009年3a地下水位埋深分布格局相似,埋深年际变化总体波动较小。分析该区丰水年(2005年)、枯水年(2009年)年内地下水位变化发现灌溉后地下水位普遍升高。(3)研究区在2000—2009年10a间地下水位空间变异明显,距离黄河越近,埋深越浅。黄河通过影响研究区的灌溉模式和地下水位埋深间接影响着当地次生盐渍化的发生。
Research on regional soil salinization status is fundamental to reasonable groundwater resources ex ploitation and soil salinization control. By taking Qihe County, Dezhou City, Shandong Province, as a study area and using the environment for visualizing images（ENVI）, GIS and statistical methods, soil salinization status and spatiotemporal variation of groundwater level were analyzed. Results indicated that. （1） There were different levels of saline soil distribution and the salinization showed a gradually decreased trend from south to north and from east to west, as for its spatial distribution. （2） Groundwater level in the region was relatively high. In 2005, the shallowest annual average depth in Yan Town was only 0.76 m and the deepest depth was observed in Xigao village, Renliji Town, being 5.12 m. The distribution patterns of groundwater level in Qihe County in 2000, 2005 and 2009 were similar and the overall fluctuation of interannual variation was unapparent. Groundwater level was found to be generally high after irrigation by analyzing its changes in abundant year（2005） and dry year（2009）. （3） The spatial variations of groundwater level were found to be obvious in the study area during the 10 years from 2000 to 2009. Groundwater level tended to be decreased with the decreased distance from the Yellow River. The Yellow River indirectly affected the occurrence of local secondary salinization by affecting irrigation model and groundwater level of the region.
出处
《水土保持通报》
CSCD
北大核心
2013年第5期29-34,2,共6页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金项目"黄土区多尺度小流域土壤侵蚀动态过程模拟研究"(40635027)
山东省自然科学基金项目"山东省黄泛平原区盐碱地改良水盐调控方法研究"(ZR2011EL020)
山东理工大学青年教师发展支持计划资助
