并列题名：Study on spatial-temporal evolution and influencing factors of tourism eco-efficiency in China Study on spatial-temporal evolution and influencing factors of tourism eco-efficiency in China 并列题名：Study on the spatio-temporal evolution and influencing factors of county economicfeences Study on the spatio-temporal evolution and influencing factors of county economicfeences 并列题名：Study of forecasting the long-time trend and influencing factors of grain price in China 并列题名：Research on measurement, spatial feature and influencing factors of interprovincial energy intensity in China 并列题名：Study on the institutional change and influencing factors of Chinese farmer cooperatives 并列题名：Study on spatial agglomeration and its effect of vegetable production in China