Table 5 Trends in coupling coordination by city in level of Huaihe ecological economic belt.

	Region	2005	2010	2015	2020
Jiangsu Province	Lianyungang	0.069	0.530	0.628	0.868
	Huaian	0.325	0.543	0.652	0.743
	Yancheng	0.355	0.481	0.563	0.818
	Suqian	0.356	0.513	0.629	0.771
	Xuzhou	0.353	0.433	0.625	0.830
	Yangzhou	0.283	0.455	0.702	0.842
	Taizhou	0.402	0.381	0.663	0.817
Anhui Province	Bengbu	0.266	0.485	0.591	0.813
	Huainan	0.345	0.430	0.623	0.864
	Fuyang	0.353	0.500	0.661	0.824
	Luan	0.297	0.554	0.578	0.840
	Bozhou	0.343	0.490	0.499	0.840
	Suzhou	0.339	0.430	0.583	0.857
	Huaibei	0.402	0.464	0.564	0.851
	Chuzhou	0.315	0.443	0.566	0.872
Shandong Province	Zaozhuang	0.167	0.551	0.744	0.920
	Jining	0.259	0.559	0.647	0.856
	Linyi	0.189	0.551	0.688	0.799
	Heze	0.154	0.521	0.586	0.851
Henan Province	Xinyang	0.376	0.488	0.682	0.852
	Zhumadian	0.320	0.405	0.771	0.812
	Zhoukou	0.338	0.571	0.693	0.758
	Luohe	0.376	0.409	0.672	0.819
	Shangqiu	0.264	0.417	0.660	0.827
	Pingdingshan	0.264	0.571	0.699	0.883
	Tonbai	0.339	0.404	0.655	0.881
Hubei Province	Suixian	0.463	0.454	0.549	0.804
	Guangshui	0.463	0.454	0.549	0.804
	Xiaogan	0.238	0.449	0.670	0.878
	Entire study area	0.246	0.444	0.649	0.912

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