Abstract: Using the data of 13 soil moisture monitoring sites in 2 counties in Gansu Province to verify the adaptability of the integrated diagnostic model of soil moisture in the semi-arid and semihumid regions in Northwest China. The model was established by the data during the period of 2012-2014, and validated by the data of 2015. The results showed that the model had good adaptability in the semi-arid and semi-humid regions of Gansu Province, with a qualification rate of over 80% in the semi-humid regions and over 90% in the semi-arid regions. Different precipitation regions had different model parameters, and higher prediction accuracy of the model was found on less-precipitation monitoring sites. In conclusion, the integrated diagnostic model can be used in semi-arid and semi-humid regions in Northwest China.

Key words: community dynamic, ecological indication, ecological restoration., soil mite