Barely Significant

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From an industrial value chain perspective, the Northern and Southern Coastal regions encompass industries spanning high, medium, and low levels, with an increasing trend of advanced regions (e.g., Beijing and Guangdong) transferring medium- and low-end industries to neighboring or related regions (e.g., Hebei and Hainan).
During the Cd treatment, PtWRKY4 , PtWRKY65 , and PtWRKY96 exhibited consistent expression patterns, showing an increasing trend from 0 to 36 hours in roots, while in leaves, their expression continuously increased from 0 to 12 hours, peaking at 12 hours, followed by a decreasing trend from 12 to 24 hours, and then increasing again from 24 to 36 hours.
Although quantitative depth profiling of calcium carbonate is not conducted in this study, qualitative examination of cross-sectional samples reveals a clear trend: samples with moderate fiber content (e.g., 0.15%) exhibit relatively homogeneous CaCO3 deposition throughout the vertical profile, whereas samples with higher fiber dosages (≥0.25%) show calcium carbonate concentrated primarily in the upper layers, with visibly reduced mineralization at depth.
As can be seen from Fig 2 and 3 , from 2000 to 2022, the number of births and the birth rate in China generally showed a downward trend, but there was a significant increase in 2016, which might be related to policy adjustments.The seventh national census in 2020 shows that the population pyramid is contracting at the bottom and expanding in the middle, indicating a decrease in the proportion of young people and an increase in the proportion of middle-aged and elderly people, with a clear trend of aging.