Ecological Benefits

• The Qian'an Sanli River riparian buffer zone can reduce more than 80% of stormwater runoff, with even better results under conditions of low initial soil moisture content and gentle slopes (5°).
• The vegetation demonstrates significant purification effects, with total phosphorus (TP) reduction rates reaching 85.35%, total nitrogen (TN) at 13.41%, ammonia nitrogen (NH₃-N) at 68.32%, chemical oxygen demand (COD) at 87.76%, and suspended solids (SS) as high as 98.5%. Vegetation types such as lawns and shrubs show the best pollutant removal effects, while gravel performs poorly.
• Reducing the slope from 10°to 5°can improve pollutant reduction rates by over 50%.
• This study provides scientific evidence for the ecological restoration design of riparian buffer zones, effectively supporting urban water quality improvement and the restoration of ecological functions.

Data Source:

Yang X, Wang Z. Effects on rainfall runoff and pollutants reduction and design optimization of riparian buffer of Sanli River in Qian′an [J]. Acta Ecologica Sinica, 2019, 39(16): 6029-6039.

Social Benefits

• This study employed the SD (System Dynamics) method and regression analysis to assess the quality of urban river morphological landscapes, providing a scientific basis for the optimization design of river morphology. It emphasizes the importance of multidimensional comprehensive planning in enhancing the quality of urban river landscapes. The results indicate that the ecological corridor landscape quality of Qian'an Sanli River scored higher than other river sections, demonstrating good continuity of landscape space and urban integration.

Data Source:

Qiao Ji, Yang L, Liu Z, Shang L. Research on Urban River Morphological Landscape Quality Based on SD Method [J]. Water Conservancy Planning and Design, 2020, (01): 6-11+15+88.