Newly Recorded Species of Eucocconeis (Bacillariophyta) in China Factors influencing local residents’ attitude towards nature conservation in natural tourism destination: a comparative study on China’s Jiuzhaigou National Park and UK’s New Forest National Park Comprehensive quality evaluation of Codonopsis Radix from different planting areas in Jiuzhaigou County An assessment of the jiuzhaigou landscape recreational value and spatial variation Measuring the ecological impact of tourist wastes: methodology and cases study of Jiuzhaigou and Huangshan National Park