Long term observation and comparative research were conducted in watershed of Yanting agro-ecological station of purple soil of CAS to analyze land use change and environmental effects.

• 通过长期的观测数据分析与土地利用现状的对比,研究四川盆地中部丘陵盐亭紫色土农业生态试验站集水区的土地利用变化及其环境效应。