杭州余杭塘河干支流水体氮磷时空分布特征  

Spatio-temporal Distribution Characteristics of Nitrogen and Phosphorus in the Yuhangtang River in Hangzhou

作　　者：江灿 徐力 段俊鹏 肖涛[1] 李洪彬 李文兵[1] 余华 宋垚彬[1] 戴文红[1] 董鸣[1] JIANG Can;XU Li;DUAN Junpeng;XIAO Tao;LI Hongbin;LI Wenbing;YU Hua;SONG Yaobin;DAI Wenhong;DONG Ming(Key Lab of Hangzhou City for Ecosystem Protection and Restoration,College of Life and Environmental Sciences,Hangzhou Normal University,Hangzhou 310036,China)

机构地区：[1]杭州师范大学生命与环境科学学院生态系统保护与恢复杭州市重点实验室,浙江杭州310036

出　　处：《杭州师范大学学报（自然科学版）》2018年第5期481-487,519,共8页Journal of Hangzhou Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(31700475);杭州师范大学攀登工程项目;杭州师范大学产学研专项项目

摘　　要：为了解余杭塘河土地利用类型、流域支流等对干流水体氮磷含量的时空分布特征,测定分析了余杭塘河干支流枯水期和丰水期水体中不同形态氮素和磷素的含量.结果表明:1)枯水期,余杭塘河干流总氮(TN)含量自上游往下游呈"递减-升高-递减"的变化趋势;丰水期,TN含量在各河段的变化趋势相近,但不同形态的氮在不同河段的浓度不同.2)枯水期,余杭塘河干流总磷(TP)在第II、IV河段含量最高,但丰水期,各河段无明显差异.无论枯水期、丰水期还是南支流、北支流,余杭塘河水体中磷素形态主要为溶解态(DP).3)土地利用类型及支流氮、磷素的输入是影响余杭塘河干流水质的重要因素.在今后的河流修复与整治中,应遵循对干流和支流生态系统的综合修复策略与管理模式.In order to explore the influences of land use type and catchment branching on the temporal and spatial distribution characteristics of the contents of nitrogen and phosphorus in the Yuhangtang River, the contents of nitrogen and phosphorus with different forms in the water during dry and wet season were analyzed. The results showed that during dry season, TN showed a trend of “decrease-elevation-decrease” from upstream to downstream section in the main-stream. However, total nitrogen kept constant in different sections during wet season. Nitrogen with different forms had different concentrations in different sections of the river. II and IV sections of the main stream had the highest TP during dry season. No difference in TP existed among different sections of the main stream during wet season. The phosphorus form both in dry and wet season, and south and north tributary was DP. Land use type and the input of nitrogen and phosphorous from branch-stream are the important factors affecting the water nutrient of the main stream of the river. It should follow the integrated renovation strategy and management mode to the ecosystem of the main and branch streams in the river restoration and realignment.

关 键 词：土地利用类型 氮素与磷素 干流与支流 时空分布 余杭塘河 

分 类 号：Q948.1[生物学—植物学]