Evaluation of Water Quality in Ialomita River Basin in Relationship with Land Cover Patterns

Water

Daniel Dunea¹  Nicolae Petrescu¹  Stefania Iordache¹  Gheorghe Serban²  Danut Tanislav³  Petre Bretcan³  Razvan Teodorescu⁴  Elena Tuchiu⁵ 

[1] Faculty of Environmental Engineering and Food Science, Department of Environmental Engineering, Valahia University of Targoviste, Aleea Sinaia No. 13, 130004 Targoviste, jud. Dambovita, Romania;Faculty of Geography, Babes-Bolyai University, Clinicilor street, 5–7, 400006 Cluj-Napoca, Romania;Faculty of Humanities, Department of Geography, Valahia University of Targoviste, 130105 Targoviste, Romania;Faculty of Land Reclamation and Environmental Engineering, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Blvd, District 1, 011464 Bucharest, Romania;National Administration “Romanian Waters” Edgar Quinet, 6, 010164 Bucharest, Romania;

关键词: land use;    land cover;    factor analysis;    swat model;    expected mean concentration;    nutrients;    physicochemical parameters;   

DOI  :  10.3390/w12030735

来源: DOAJ

【 摘 要 】

The paper reviews the state of water quality in Ialomita River Basin (IRB), Romania, between 2007 and 2018 using the land use/land cover and basin-specific conditions effects on sediments and nutrients load. On-site monitoring was performed in two control sections of the Ialomita River, one in the upper part of the basin (near Targoviste city) and the second near the discharge into the Danube (downstream of Tandarei town). The statistical averages of water parameters for 10 years’ monitoring in the control section that is close to the Ialomita River discharge in Danube were pH = 7.60 (range: 6.41−8.40), NH₄-N = 1.20 mg/L (0.02−14.87), alkalinity = 4.12 mmol/L (1.34−6.27), NO₃-N = 2.60 mg/L (0.08−17.30), PO₄-P = 0.09 mg/L (0−0,31), dissolved oxygen (DO) = 8.87 mg/L (2.72−15.96), BOD₅ = 5.50 mg/L (0.01−74.71), suspended solids (TSS) = 508.32 mg/L (15.2−4457), total dissolved salts (TDS) = 733.69 mg/L (455.2−1053), and river discharge = 38.60 m³/s (8.22−165). Expected mean concentration and soil and water assessment tool (SWAT) modeling have been employed in the GIS environment to extend the approach to large spatial patterns within the basin. The estimated average specific emission on the total area for nitrogen was 3.2 kg N/ha, and 0.3 kg P/ha for phosphorus highly influenced by the agricultural activities. The results are useful to raise awareness regarding water-quality degradation and the need to stop and even reverse such trends for local and national sustainable development.

【 授权许可】

Unknown