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Subsystem | Dimension | Indicator | Interpretation |
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Tourism | Tourism scale (T1) | Number of domestic tourists (x1,+)1 | Reflects the scale of domestic tourism |
Number of international tourists (x2,+) | Reflects the scale of inbound tourism |
Number of hotels (x3,+) | Reflects the scale of accommodation |
Number of travel agencies (x4,+) | Reflects the scale of tourism services |
Number of employees of tourism industry (x5,+) | Reflects the scale of people engaging in tourism services |
Tourism performance (T2) | Earnings from domestic tourists (x6,+) | Reflects the financial performance from domestic tourism |
Earnings from international tourists (x7,+) | Reflects the financial performance from inbound tourism |
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Air environment | Air environment pressure (E1) | Emissions of sulphur dioxide (y1,−) | Reflects the pollution pressure from sulphur dioxide |
Emissions of nitrogen oxides (y2,−) | Reflects the pollution pressure from nitrogen oxides |
Emissions of smoke and dust (y3,−) | Reflects the pollution pressure from smoke and dust |
Air environment state (E2) | Average concentrations of SO2 (y4,−) | Reflects the current status of SO2 |
Average concentrations of NO2 (y5,−) | Reflects the current status of NO2 |
Average concentrations of PM10 (y6,−) | Reflects the current status of PM10 |
Days of good air quality (y7,+) | Reflects the overall status of air environment |
Air environment response (E3) | Capability of industrial waste gas treatment facilities (y8,+) | Reflects the treatment degree of industrial waste gas |
Investment in atmospheric treatment (y9,+) | Reflects the investment of air environmental pollution control |
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