This paper analyzed the total factor productivity of Shandong Province and its impact on the local economic environment through Malmquist-Luenberger productivit
In addition to purifying water, constructed wetland has become an important ecological landscape in city. The characteristics and key design points of construct
3S technology was applied to analyze spatio-temporal changes of landscape pattern in Nanling National Nature Reserve and the driving forces. The results showed
To study the basic situation of application of local landscape plants in Tibet, local landscape plants in Tibet was investigated firstly by using 'biologica
On the basis of analyzing yearly data and spatial relationships between tourism spots, star hotels and travel agencies of Hainan Province, and comparing all the