2.1 滦河水系河流水质评价
根据滦河水系2001—2014年河流水质评价资料,分别计算不同年份各类水河长。表6-12为滦河水系河流水质评价表。
表6-12 滦河水系河流水质评价表
年份评价河长
/km分类河长/kmⅠ类Ⅱ类Ⅲ类Ⅳ类Ⅴ类>Ⅴ类20011585. 50304.0451. 5280.0247.0303.020021827. 70367. 0728.270.0292. 5370.020031827. 770.0320.0845. 598.011.2483.020041827. 770.0284.0673. 783.066.0651.020051827. 770.0451.0659. 54.2140.0503.020061827. 770.0142.0485.0399.0243.2488.520071827. 770.0547.0157.0649.223.0381. 520081809.070.0655. 0746.079.078.0181.020091827. 7292.0427.0420. 5505.049.2134.020101827. 726.0678. 5747.056.0139.0181.220111827. 70687.0805. 7177.058.0100.020121827. 70698. 5633. 0132.0217.0147.220131827. 70790. 5785.090.07.2155.020141910. 7153. 0914. 5500.0107. ...... (共1131字) [阅读本文]>>