The ocean is one of the largest ecosystems on Earth and has an extremely important impact on the survival of species around the world. However, in recent years, the ocean has faced serious pollution problems, posing a huge threat to the ecosystem and human health, especially in coastal waters.
**The water quality of coastal waters is an important indicator for evaluating the quality of the ecological environment in coastal waters. **In recent years, with the continuous advancement of the protection and construction of "Beautiful Bays", the water quality of my country's coastal waters has been stable and improving. According to relevant departments, in 2021, the area of my country's coastal waters that met the national Class I and Class II seawater quality standards accounted for 81.3%, Class III seawater accounted for 5.2%, and Class IV and Class IV-minus seawater accounted for 13.5%. The water quality of some estuaries and bays entering the sea still needs to be improved.
With the continuous improvement of the concept of ecological civilization in the whole society, the importance of strictly controlling and improving the water quality of coastal waters has become increasingly prominent. Against this background, CnOpenData launched China's seawater quality monitoring data, including various indicators of nearshore water quality monitoring within 2017, to help related research.
Time interval
2017-2023
Field display
< /tr>China's seawater quality monitoring data field table |
---|
Year |
Sea area |
Province |
Prefecture-level city |
Point code |
Measured longitude |
Measured latitude |
Detection time |
pH (dimensionless) |
Dissolved oxygen (mg/L) |
Chemical oxygen demand (mg/L) |
Inorganic nitrogen (mg/L) |
Active phosphate (mg/L) |
Petroleum (mg/L) |
Water quality category |
Sample data< /h2>
< td>39.4 < td>0.014 tr> < tr>
< td>1.16 < td>Liaoning d> < td>May 2017 < td>Class I9.34 9.56 H21YQ504 H21YQ013 Yellow Sea < td>0.06539.26 0.84 < tr> 121.25 td> 0.02 td> < /tr>
Year | Sea area | Province | City | Point code | Measured longitude | Measured latitude | Test time | pH (dimensionless) | Dissolved oxygen (mg/L) | Chemical oxygen demand (mg/L) | Inorganic nitrogen (mg/L) | Active phosphate (mg/L) | Petroleum (mg/L) | Water quality category |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2017 | Yellow Sea | Liaoning | Dandong | H00JQ007 | 123.59 | May 2017 | 8.13 | 9.71 | 0.71 | 0.132 | 0.003 | 0.006 | Class 1 | |
2017 | Yellow Sea | Liaoning | Dandong | H00JQ510 | 124.02 | 39.53 | May 2017 | 8.12 | 9.42 | 0.8 | 0.13 | 0.001 | Class I | |
2017 | Yellow Sea | Liaoning | Dandong | H21YQ501 | 123.65 | 39.74 | May 2017 | 8.12 | 8.6 | 0.9 6 | 0.088 | 0.001 | 0.02 8 | Class I |
2017 | Yellow Sea | Liaoning | Dandong | H21JQ508 | 123.83 | 39.54 | May 2017 | 8.08 | 9.24 | 0.68 | 0.662 | 0.003 | 0.004 | Fourth Class Poor |
2017 | Yellow Sea | Liaoning | Dandong | H21YQ008 | 123.67 | 39.79 | May 2017 | 8.12 | 8.27 | 1.16 | 0.162 | 0.001 | 0.021 | Class 1 |
2017 | Yellow Sea | Liaoning | Dandong | H21YQ512 | 123 .93 | 39.81 | May 2017 | 8.03 | 8.07 | 1.32 | 0.043 | 0.005 | 0.049 | Class 1 |
2017 | Yellow Sea | Liaoning | Dandong | H21YQ514 | 123.61 | 39.57 | May 2017 | 8.07 | 8.86 | 0.76 | 0.117 | 0 .012 | 0.019 | Class I |
2017 | Yellow Sea | Liaoning | Dandong | H21ZQ001 | 124.2 | 39.85 | May 2017 | 7.95 | 8.21 | 1.24 | 0.653 | 0.009< /td> | 0.02 | Fourth Class Poor |
2017 | Yellow Sea | Liaoning | Dandong | H21ZQ002 | 124.17 | 39.8 | May 2017 | 8.09 | 9.1 | 0.381 | 0.002 | 0.036 | Class III | |
2017 | Yellow Sea | Liaoning | Dandong | H21ZQ003 | 124.1 | 39.8 | 2017 May | 8.16 | 7.94 | 2.28 | 0.542 | 0.019 | 0.033 | Poor Category 4 |
2017 | Yellow Sea | Dandong | H21ZQ004 | 124.15 | 39.77 | May 2017 | 8 | 8.53 | 1.68 | 0.555 | 0.005 | 0.019 | Class IV inferior | |
2017 | Yellow Sea | Liaoning | Dandong | H21ZQ005 | 124.07 | 39.76 | May 2017 | 8.22 | 9.47 | 1.28 | 0.399 | 0.002 | 0.017 | Three categories |
2017 | Yellow Sea | Liaoning | Dandong | H21ZQ006 | 124.13 | 39.71 | May 2017 | 8.17 | 9.78 | 1.24 | 0.413 | 0.001 | 0.016 | Four categories |
2017 | Yellow Sea | Liaoning | Dandong | H21ZQ007 | 124 | 39.69 | May 2017 | 8.12 | 9.44< /td> | 0.96 | 0.251 | 0.005 | 0.009 | Class II |
2017 | Bohai | Liaoning | Dalian | B21 YQ510 | 121.2 | 39.14 | 8.17 | 9.56 | 1.04 | 0.02 | 0.003 | 0.025 | Class I | |
2017 | Bohai | Liaoning | Dalian | B21YQ00 3 | 121.4 | 39.13 | May 2017 | 8.13 | 8.82 | 0.55 | 0.079 | 0.006 | 0.025 | |
2017 | Yellow Sea | Liaoning | Dalian | H21YQ030 | 121.51 | 38.82 | May 2017 | 8.02 | 5.12 | 1.45 | 0. 472 | 0.027 | 0.025 | Four categories |
2017 | Yellow Sea | Liaoning | Dalian | H21ZQ014 | 121.77 | 39 | May 2017 | 8.11 | 1.05 | 0.099 | 0.004 | 0.053 | Category 3 | |
2017 | Yellow Sea | Liaoning | Dalian | H21ZQ016 | 121.68 | 38.9 9 | May 2017 | 8.14 | 0.86 | 0.084 | 0.004 | 0.041 | Class I | |
2017 | Bohai | Liaoning | Dalian | B21YQ002 | 121.54 | 39.13 | May 2017 | 8.14 | 6.66 | 0.68 | 0.079 | 0.02 | 0.023 | Class II |
2017 | Bohai | Liaoning | Dalian | B21YQ004 | 121.5 | 39.13 | May 2017 | 8.14 | 8.2 | 0.63 | 0.093 | 0.012 | 0.016 | Class I |
2017 | Bohai | Liaoning | Dalian | B21YQ033 | 121.32 | 39 | May 2017 | 8.11 | 8.53 | 0.62 | 0.085 | 0.021 | 0.024 | Class II |
2017 | Yellow Sea | Liaoning | Dalian | H21YQ516 | 122.25 | 38.98 | May 2017 | 8.2 | 9.6 | 0.74 | 0.022 | 0.002 | 0.004 | Class I |
2017 | Yellow Sea | Liaoning | Dalian | H21YQ503 | 121.99 | 38.92 | May 2017 | 8.11 | 10.4 | 0.7 | 0.199 | 0.008 | 0.051 | Class III |
2017 | Yellow Sea | Liaoning | Dalian | 122.21 | 39 .16 | May 2017 | 8.09 | 8.9 | 0.71 | 0.09 | 0.004 | 0.037 | Class 1 | |
2017 | Yellow Sea | Liaoning | Dalian | 122 | 39.07 | May 2017 | 8.08 | 9.23 | 0.65 | 0.115 | 0.007 | 0.0 31 | Class I | |
2017 | Liaoning | Dalian | H21YQ026 | 122.18 | 39.22 | May 2017 | 8.06 | 8.8 | 0.74 | 0.008 | 0.042 | Class I | ||
2017 | Yellow Sea | Liaoning | Dalian | H21YQ032 | 121.94 | 39.03 | May 2017 | 8. 11 | 9.26 | 1.18 | 0 .166 | 0.017 | 0.054 | Class III |
2017 | Bohai | Liaoning | Dalian | B21YQ005 | 121.67 | 39.34 | May 2017 | 8 | 6.33 | 1.74 | 0.591 | 0.005 | 0.025 | Inferior to Category 4 |
2017 | Bohai | Liaoning | Dalian | B21YQ034 | 121.52 | May 2017 | 8.11 | 8.54 | 0.81 | 0.08 | 0.005 | 0.019 | Class 1 | |
2 017 | Bohai | Liaoning | Dalian | B21YQ521 | 121.08 | 39.09 | May 2017 | 8.24 | 10.81 | 0.98 | 0.02 | 0.002 | 0.025 | Class I |
201 7 | Bohai | Liaoning | Dalian | B21YQ522 | 120.88 | 38.99 | May 2017 | 8.26 | 10.59 | 0.018 | 0.002 | 0.037 | Class I | |
2017 | Bohai | Liaoning | Dalian | H00JQ509 | 121.1 | 38.51 | May 2017 | 8.25 | 10.29 | 1.02< /td> | 0.022 | 0.002 | Not detected | Class I |
2017 | Yellow Sea | Liaoning | Dalian | H21JQ511 | 121.43 | 38.61 | May 2017 | 8.21 | 9.09 | 0.7 | 0.023 | 0.003 | 0.005 | Class 1 |
2017 | Bohai | Liaoning | Dalian | B21YQ001 | 121.1 1 | 38.75 | May 2017 | 8.19 | 10.3 | 0.63 | 0.075 | 0.01 | 0.026 | Class 1 |
2017 | Bohai | Liaoning | Dalian | B21YQ032 | 121.09 | 38.88 | May 2017 | 8.22 | 10.8 | 0.65 | 0.103 | 0. 01 | 0.019 | Class 1 |
2017 | Bohai | Liaoning | Dalian | B21YQ511 | 120.94 | 38.78 | May 2017 | 8.21 | 9.13 | 0.68 | 0.069 | 0.007 | 0.024 | Class I |
2017 | Yellow Sea | Liaoning | Dalian | H21YQ502 | 121.3 | 38.69 | 2017 May | 8.23 | 10.4 | 0.71 | 0.064 | 0.009 | 0.031 | Class I |
2017 | Bohai | Liaoning | Dalian | H21YQ522 | 121.15 | 38.72 | 2017 May 2017 | 8.19 | 10.8 | 0.68 | 0.117 | 0.01 | 0.03 | Class I |
2017 | Yellow Sea | Liaoning | Dalian | H21YQ022 | 38.78 | May 2017 | 8.23 | 11.1 | 0.73 | 0.082 | 0.008 | 0.019 | Class 1 | |
2017 | Yellow Sea | Liaoning | Dalian | H21YQ031 | 121.4 | 38.82 | May 2017 | 8.1 | 7.01 | 0.79 | 0.14 | 0.06 | Three categories | |
2017 | Yellow Sea | Liaoning | Dalian | H21YQ012 | 122.37 | 39.35 | May 2017 | 8.2 | 9.12 | 0.54 | 0.012 | 0.002 | 0.01 | Class I |
2017 | Yellow Sea | Liaoning | Dalian | H21YQ517 | 121.57 | 38.67 | May 2017 | 8.22 | 9.26 | 0.7 | 0.029 | 0.002 | Not detected | Class I |
2017 | Yellow Sea | Liaoning | Dalian | H21YQ021 | 121.57 | 38.87 | 2017 May 2017 | 8.16 | 10.3 | 0.87 | 0.168 | 0.006 | 0.02 | Class I |
2017 | Bohai | Liaoning | Dalian | B21YQ508 | 121.11 | 39.5 | May 2017 | 8.19 | 9.55 | 0.99 | 0.027 | 0.003 | 0.035 | Class 1 |
2017 | Bohai | Liaoning | Dalian | B21YQ509 | 121.17 | 39.33 | May 2017 | 8.18 | 9.59 | 0.94 | 0.027 | 0.003 | 0.025 | Class 1 |
2017 | Bohai | Liaoning | Dalian | B21YQ507 | 121.14 | 39.74 | May 2017 | 8.19 | 9.84 | 0.65 | 0.038 | 0.004 | 0.029 | Class I |
2017 | Bohai | Liaoning | Dalian | B21JQ031 | 121.47 | 39.94 | May 2017 | 8.12 | 9.0 8 | 0.8 | 0.095 | 0.004 | 0.012 | Class I |
2017 | Bohai | Liaoning | Dalian | B2 1YQ007 | 121.49 | 39.67 | May 2017 | 8.05 | 7.79 | 1.09 | 0.051 | 0.009 | 0.013 | Class I |
Data update frequency
Annual update