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A STUDY ON CAB NOISE OF CATERPILLAR SKIDDING TRACTOR 50 Patterns and drivers of vegetation degradation in Xilin River Basin, Inner Mongolia, China The spatial pattern of landscape fragmentation and its relations with urbanization and socio-economic developments: a case study of Beijing Ecological water depletion by human use in Beijing City Thermal environment change and its socioeconomic drivers in Shanghai City during the 1990s