雨水花园集中入渗对地下水水位与水质的影响

被引：22

作者：

贾忠华

吴舒然

唐双成

罗纨

许青

邵正宵

机构：

[1] 扬州大学水利与能源动力工程学院

来源：

水科学进展 | 2018年 / 29卷 / 02期

关键词：

低影响开发措施; 雨水花园; 集中入渗; 地下水变化; 地下水水质;

D O I：

10.14042/j.cnki.32.1309.2018.02.009

中图分类号：

P641 [水文地质学（地下水水文学）]; P641.2 [地下水动力学]; X523 [地下水];

学科分类号：

0818 ; 081803 ; 0815 ;

摘要：

作为低影响开发(Low Impact Developmet,LID)措施之一,城市雨水花园集中入渗雨水径流可增加对城区地下水的补给。根据一现场监测试验,研究了长期(监测期3年)及短期(降雨3天内)雨水花园入渗点及对照点地下水位与水质的变化,分析了集中入渗的效果和影响范围。结果表明:(1)雨水花园对入渗区地下水位产生了显著影响(α=0.01);(2)氨氮(NH4-N)在3年及雨后3日的观测值均显著小于对照值;总氮(TN)指标在短期增加显著,长期均值增加不显著。(3)硝态氮(NO3-N)浓度在降雨后有所升高,但不显著,几个观测点浓度有增有减;总磷(TP)浓度的短期值和长期均值有增有减。对于类似研究区地下水位在23 m的情况,集中入渗雨水径流可有效补给地下水,对氮素影响明显,对磷影响有限。

引用

页码：221 / 229

页数：9

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