文献类型：期刊文献

中文题名：长潭水库小流域土壤氮磷空间异质性及面源污染风险

英文题名：Temporal and Spatial Characteristics of Soil Nitrogen and Phosphorus in the Changtan Reservoir Basin and Non-point Source Pollution Risk

作者：程婉青[1,2] 陈光才[1] 汪秀媛[3] 盖旭[1] 张涵丹[1]

第一作者：程婉青

机构：[1]中国林业科学研究院亚热带林业研究所,浙江杭州311400;[2]中南林业科技大学林学院,湖南长沙410004;[3]台州市林业技术推广总站,浙江台州318000

年份：2025

卷号：12

期号：2

起止页码：21-30

中文期刊名：湖南生态科学学报

外文期刊名：Journal of Hunan Ecological Science

基金：浙江省自然科学基金资助项目(LTGS24D010001);浙江省高层次人才特殊支持计划科技创新领军人才项目(2021R52047)。

语种：中文

中文关键词：长潭水库;小流域;土壤质量;“源”强风险;面源污染

外文关键词：Changtan Reservoir;sub-basin;soil quality;“source”strength risk;non-point source pollution

分类号：S157;X522

摘要：【目的】解析不同土地利用方式下库区周边土壤质量的时空变化,探讨典型库区小流域面源污染潜在风险。【方法】以浙江台州长潭水库小流域周边农田和经济林为研究对象,分析库区小流域不同水期土壤氮磷空间分布特征。【结果】经济林和农田SOC含量在枯水期下降。土地利用方式、水期和流域三者的交互作用对有机碳(SOC)、总氮(TN)、有效氮(AN)、总磷(TP)、有效磷(AP)、碳磷比(C/P)、氮磷比(N/P)均有显著影响。丰水期象岙溪经济林和农田“源”强风险指数较高,而枯水期较高“源”强风险指数的支流则为宁溪和桐外岙溪。【结论】土壤氮磷分布受到水期、流域、土地利用方式交互作用的强烈影响,库区支流周边土壤“源”强风险随水期变化而波动。特别是长潭水库小流域宁溪需加强阻控流域周边土壤的肥料输入。
【Objective】Understanding temporal and spatial changes of soil nutrients and soil quality under different land use patterns was of great significance for assessing the non-point source risk of small watersheds within reservoir areas.【Method】The economic forests and farmland surrounding the Changtan Reservoir basin were focused.The contents of soil organic carbon(SOC),nitrogen and phosphorus in the wet season and dry season were determined and the changes of the spatial distribution of soil nitrogen and phosphorus of eight sub-basins were analyzed in order to provide experimental basis for soil quality and non-point source pollution risk assessment in small watersheds.【Result】SOC content in economic forest and farmland decreased during dry season.The interaction of land use mode,water period and lo-cation had significant effects on SOC,TN,AN,TP,AP,C/P and N/P.The strong risk index of“source”in Xiangaoxi economic forest and farmland was higher and the“source”strong risk index of Ningxi and Tongwaiaoxi was higher in the dry season.【Conclusion】To sum up,the distribution of soil N and P is strongly influenced by the interaction of water period,watershed and land use mode.The risk of soil“source”intensity around the tributaries of the reservoir area fluctuates with the change of water peri-od,among which Ningxi should be strengthened the control of soil fertilizer input around the watershed.