刁口河生态补水对浅表土壤典型物化指标的影响研究

Research on the Impact of Ecological Water Replenishment in Diaokou River on Typical Physical and Chemical Indicators of Shallow Soil

2011—2023年,持续14年的生态补水,极大地改善了刁口河流路湿地生态环境。为科学判定生态补水对刁口河流路湿地特别是浅表土壤的改善效果,课题组在山东黄河三角洲国家级自然保护区一千二监测站内布设了监测断面,按频次对土壤典型物化指标(全盐量、碱解氮、速效钾、有效磷)进行了原型监测,结合气象资料,确定生态补水最大在0.8km内对刁口河流路湿地浅表土壤物化指标有良性影响,改善了生态环境,典型物化指标的变幅高低基本表现出离河距离越近变幅越大、离河距离越远变幅越小的规律。

From 2011 to 2023,a continuous 14-year ecological water replenishment initiative significantly improved the ecological environment of wetlands along the Diaokou River.To scientifically assess the effectiveness of ecological water replenishment on the improvement of wetlands,particularly the shallow soil,along the Diaokou River,the research team set up monitoring sections within the Shandong Yellow River Delta National Nature Reserve,specifically at the Yiqian’er Monitoring Station.Prototype monitoring of typical physical and chemical indicators of soil(total salinity,alkali-hydrolyzable nitrogen,available potassium,available phosphorus)is conducted according to frequency.Combined with meteorological data,it is determined that ecological water replenishment had a beneficial effect on the physical and chemical indicators of shallow soil within 0.8km along the Diaokou River,improving the ecological environment.The amplitude of changes in typical physical and chemical indicators generally follows the pattern that the closer the distance to the river,the greater the amplitude of change,while the farther the distance from the river,the smaller the amplitude of change.