白洋淀湿地土壤氮素空间分布特征研究  

Research of the Spatial Distribution Characteristics of Soil Nitrogen in the Baiyangdian Wetland

作　　者：王青[1,2,3] 袁勇[2,3,4] 李传哲[2,3] 冯婧[1,2,3] 耿思敏[2,3] 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038 [3]中国水利水电科学研究院水资源研究所,北京100038 [4]北京林业大学水土保持学院,北京100083

出　　处：《环境保护科学》2013年第4期1-6,共6页Environmental Protection Science

基　　金：国家重点基础研究发展计划(973计划)"气候变化对黄淮海地区水循环的影响机理和水资源安全评估"(2010CB951102);国家自然科学基金创新研究群体基金项目(51021066);河北省自然科学基金面上项目(E2012402067)

摘　　要：为了了解白洋淀湿地土壤氮素空间分布规律,于2011年4月在研究区内部耕地和芦苇地采集土样进行分析、研究。研究结果显示,湿地土壤氮素含量总体趋势随着土层的加深而减少;表层土壤全氮和碱解氮呈现出西北高、东南低的趋势。耕地土壤氮素含量和变异性均高于芦苇地,反映出人类活动对土壤氮素的空间分布有较大影响。相关性分析显示土壤有机质含量和含水量与氮素联系紧密,是影响其分布的重要因素。In order to realize the spatial distribution characteristics of soil nitrogen in the Baiyangdian Wetland,we took random sample in cultivated land and reed land of the Baiyangdian Wetland in April,2011.On the base of samples testing and analysis,the results showed that：first,in vertical direction,with the increase of soil depth,soil nitrogen content showed decreasing trend in general; while in surface soil,the contents of total nitrogen and alkali-hydrolyzable nitrogen in northwest were higher and that in southeast.Second,the differences between reed land and cultivated land were that,the contents and vertical variability of soil nitrogen in cultivated land was higher than that in reed land,which was corresponded to human activities.Correlation analysis showed that content of soil organic matter and soil moisture correlated with soil nitrogen significantly,they were key factors which influenced the distribution of soil nitrogen.

关 键 词：全氮 碱解氮 空间分布 白洋淀湿地 分布特征 

分 类 号：X53[环境科学与工程—环境工程]