Unveiling the driving factors of urban land subsidence in Beijing, China.

Land subsidence, an insidious and gradual geological phenomenon, presents a latent threat to future urban development and socio-economic progress. Beijing City, renowned for its high population density, has encountered significant challenges associated with land subsidence. In this study, we leverage time-series interferometric synthetic aperture radar (time-series InSAR) method to analyze the spatio-temporal patterns of land subsidence in Beijing.

[Studies on strain characteristics of Pseudostellaria heterophylla varieties].

Objective: To characterize the different varieties of Pseudostellaria heterophylla during cultivation.

Method: Using systematic selection in the main productive areas, the techniques of random design, all varieties were observed for 3 years.

Result: The biological and 425 productive characteristics of P.