Analysis and Prediction of the Coupling Coordination Relationship between Tourism and Air Environment: Yangtze River Economic Zone in China as Example

Table 5

CDD of the tourism subsystem.

	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	Mean	Grade
Shanghai	0.952	0.689	0.732	0.702	0.631	0.664	0.653	0.611	0.657	0.662	0.695	Good
Chongqing	0.213	0.238	0.243	0.286	0.298	0.306	0.306	0.302	0.323	0.344	0.286	Fair
Anhui	0.215	0.286	0.284	0.347	0.370	0.392	0.398	0.407	0.430	0.455	0.359	Fair
Zhejiang	0.551	0.637	0.601	0.682	0.702	0.758	0.750	0.770	0.535	0.562	0.655	Good
Jiangsu	0.650	0.721	0.669	0.865	0.877	0.531	0.561	0.553	0.584	0.603	0.661	Good
Hubei	0.213	0.299	0.301	0.329	0.344	0.368	0.370	0.382	0.399	0.411	0.342	Fair
Jiangxi	0.146	0.223	0.204	0.219	0.218	0.233	0.256	0.257	0.278	0.289	0.232	Poor
Hunan	0.254	0.314	0.311	0.330	0.310	0.318	0.336	0.328	0.351	0.378	0.323	Fair
Yunnan	0.322	0.373	0.346	0.380	0.391	0.433	0.425	0.435	0.480	0.515	0.410	Fair
Sichuan	0.086	0.270	0.255	0.295	0.311	0.331	0.339	0.361	0.396	0.400	0.304	Fair
Guizhou	0.008	0.077	0.090	0.089	0.096	0.121	0.133	0.150	0.200	0.241	0.121	Poor