水库型水源地迎水坡氮磷空间分布及其对土地利用的响应  

Spatial Distribution of Soil Nitrogen and Phosphorus and Their Response to Land Use in Riverside Slope of Water Source

作　　者：杨陆波 夏继红[1] 杨萌卓 朱星学 李朝达 秦如照 刘秀君 YANG Lu-bo;XIA Ji-hong;YANG Meng-zhuo;ZHU Xing-xue;LI Chao-da;QIN Ru-zhao;LIU Xiu-jun(College of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China)

机构地区：[1]河海大学农业科学与工程学院,南京210098

出　　处：《中国农村水利水电》2020年第12期144-147,157,共5页China Rural Water and Hydropower

基　　金：国家重点研发计划项目(2018YFD0900805);国家自然科学基金项目(41471069)。

摘　　要：水库型饮用水源地迎水坡土壤氮磷含量对水源水质会产生重要影响。以温州市珊溪水库为研究对象,通过对水库迎水坡土壤的监测取样,研究迎水坡土壤的速效磷(AP)、总磷(TP)、碱解氮(AN)和总氮(TN)含量空间分布特征,应用单因素方差分析和Duncan多重比较法,研究了空间差异性及不同土地利用方式对氮磷含量空间分布的影响。结果表明:①峃作口区和库尾区迎水坡土壤AP、TP含量较高,近坝区附近迎水坡土壤AP含量较高。三插溪区和峃作口区迎水坡土壤AN、TN含量较高,在远坝汇水区迎水坡土壤AN含量较高。②库区迎水坡土壤氮磷含量空间差异明显,AP空间变异程度最大,属强变异,TP、AN以及TN均属于中等变异。③不同土地利用方式对氮磷含量分布影响明显,裸地氮磷含量较低,灌木杂草地氮磷含量较高,除园地AP外,林地、园地的土壤氮磷含量介于裸地和灌木杂草地之间。The nitrogen and phosphorus contents of the riverside slope soil of drinking water source have an important influence on water quality.Taking the Shanxi Reservoir in Wenzhou City as a study,by monitoring and sampling the soil of riverside slope,the spatial distribution characteristics of available phosphorus(AP),total phosphorus(TP),available nitrogen(AN)and total nitrogen(TN)are analyzed.One-way ANOVA and Duncan test are applied to study the spatial differences and the effects of different land use types on the spatial distribution of nitrogen and phosphorus contents.The results indicate that:①The contents of AP,and TP of the riverside slope are higher in the Xuezoukou and tail area,while AP is higher in the near dam area.AN,TN,are higher in the Sanchaxi and Xuezuokou Area.The AN content is higher in the catchment that is away from the dam.②The spatial differences of soil nitrogen and phosphorus contents are obvious,AP is highly variable with the highest variability,while the variability of TP,AN,and TN are moderate.③Land use types have significant impacts on the distribution of nitrogen and phosphorus contents.The nitrogen and phosphorus contents of bare land is low while that of shrub and weed land is high.Except for the AP of garden,the nitrogen and phosphorus contents of forest and garden were between bare land and shrub and weed land.

关 键 词：水源地 氮 磷 空间分布 土地利用方式 

分 类 号：TV21[水利工程—水文学及水资源] S153.6[农业科学—土壤学]