OUYANGYou,PANXing-yao,YANGMo-yuan,et al.Refined Monitoring of Hydrological Elements and Analysis of Water Balance in Bioretention Facility[J].China Water & Wastewater,2023,39(11):127-131.
Refined Monitoring of Hydrological Elements and Analysis of Water Balance in Bioretention Facility
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第11期
Page:
127-131
Column:
Date of publication:
2023-06-01
- Keywords:
- bioretention facility; lysimeter; water balance; soil moisture; evapotranspiration; deep seepage
- Abstract:
- Bioretention facility is widely used because of its high integration with landscape and good runoff control performance. To accurately analyze hydrological processes such as aquifer impoundment, soil water change, evapotranspiration, gravel outflow and deep seepage of bioretention facility, the refined monitoring of hydrological elements of bioretention facility was carried out by experimental monitoring means such as lysimeter. During the monitoring period, the proportion of deep seepage, evapotranspiration and gravel outflow in the water loss of bioretention facility was 35.33%, 64.65% and 0.02%, respectively, indicating that the rainfall loss of bioretention facility was mainly evapotranspiration. In addition, the runoff reduction performance of the bioretention facility was better, and gravel outflow only occurred in the event of a daily rainfall of 44 mm. According to the monitoring results of soil moisture, the infiltration performance of bioretention facility was good, and the soil moisture change had significant stratification. The soil moisture of the planting soil layer and the filling layer was more sensitive to rainfall, while the soil moisture of the raw soil layer was basically in a saturated state.
Last Update:
2023-06-01