Study on the relationship between precipitation and urban atmospheric environment: Cases of 113 key environmental protection cities

Hai XUE; Fan ZHANG

doi:10.31497/zrzyxb.20200415

Journals >Journal of Natural Resources >Volume 35 >Issue 4 >Page 937 > Article

Journal of Natural Resources
Vol. 35, Issue 4, 937 (2020)

Study on the relationship between precipitation and urban atmospheric environment: Cases of 113 key environmental protection cities

Hai XUE^* and Fan ZHANG

Author Affiliations

School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450046, China

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DOI: 10.31497/zrzyxb.20200415 Cite this Article

Hai XUE, Fan ZHANG. Study on the relationship between precipitation and urban atmospheric environment: Cases of 113 key environmental protection cities[J]. Journal of Natural Resources, 2020, 35(4): 937 Copy Citation Text

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Fig. 1. Spatial distribution of key environmental protection cities

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Fig. 2. Pollutant concentration value

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Fig. 3. Environmental protection key cities cluster spectrum map

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Fig. 4. Dynamic variation diagram of six kinds of urban clustering distribution

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Fig. 5. Linear fitting equation of precipitation and atmospheric pollution eigenvalues

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特征变量	SO₂ /(μg/m³)	NO₂ /(μg/m³)	PM₁₀ /(μg/m³)	CO /(mg/m³)	O₃ /(μg/m³)	PM_2.5 /(μg/m³)	P /mm
平均值	20.16	37.73	83.48	1.86	160.94	48.58	937.93
中位数	18.00	38.00	80.00	1.60	160.00	48.00	813.50
方差	142.01	109.43	25.55	0.559	714.15	217.93	236936.79
最小值	6.00	12.00	37.00	0.80	105.00	20.00	108.90
最大值	79.00	59.00	154.00	4.10	218.00	86.00	2256.50

Table 1. Statistical characteristic values of air pollutants and precipitation in 113 cities

变量	分类数
变量	五	六	七	八	九	十
SO₂	18.41^**	15.40^**	31.92^**	27.21^**	24.62^**	21.75^**
NO₂	42.34^**	36.35^**	30.17^**	26.99^**	23.62^**	23.28^**
PM₁₀	84.72^**	81.70^**	72.42^*	64.18^**	57.59^**	51.29^**
CO	24.59^**	32.63^**	63.37^**	54.31^**	49.75^**	47.63^**
O₃	55.63^**	46.15^**	39.18^*	33.27^**	29.02^**	25.99^**
PM_2.5	70.36^**	69.51^**	61.91^**	54.95^**	48.95^**	43.11^**
P	7.78^**	6.37^**	11.27^**	11.17^**	32.30^*	28.55^**

Table 2. Statistical test of six classifications

		SO₂	NO₂	PM₁₀	CO	O₃	PM_2.5	P
个案数		113	113	113	113	113	113	113
最极端差值	绝对	0.15	0.04	0.11	0.14	0.07	0.06	0.12
	正	0.15	0.04	0.11	0.14	0.07	0.06	0.12
	负	-0.12	-0.04	-0.07	-0.09	-0.06	-0.03	-0.07
检验统计		0.15	0.04	0.11	0.14	0.07	0.06	0.12
渐近显著性（双尾）		0	0.2	0.001	0	0.2	0.2	0.0001
相关系数ρ		-0.62^**	-0.32^**	-0.57^**	-0.70^**	-0.24^*	-0.33^**	1

Table 3. Normality test and significance analysis

	SO₂		NO₂		PM₁₀		CO		O₃		PM_2.5
	拟合系数	T检验	拟合系数	T检验	拟合系数	T检验	拟合系数	T检验	拟合系数	T检验	拟合系数	T检验
b	32.89	16.05^**	44.95	21.66^**	2.74	24.34^**	112.08	19.11^**	59.59	34.84^**	174.08	20.13^**
a	-0.02	-6.68^**	-0.01	-3.10^**	-0.01	-6.07^**	-0.03	-5.58^**	-0.01	-3.38^**	-0.01	-3.19^**
R²	0.28		0.13		0.33		0.37		0.15		0.06

Table 4. Linear regression results and fitting tests

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