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According to the characteristics of the halo phenomenon of Mini‐LED partition backlit LCD display, we measure the luminance and distribution of the halo by using the measurement method established before, and further analyze the influencing factors. Based on the hardware characteristics of this type of display, we extract three factors that affect the intensity of the halo, which are the luminance of the display area, the native contrast of the display panel and the number or size of the backlight partition. We designed and carried out the halo visual perception evaluation experiment according to the influencing factors of the halo, and further established the halo sensitivity model, which took the width and luminance of the halo as independent variables, and the predicted value of the halo was highly correlated with the evaluation value (R 2 >0.90). Finally, we analyzed the influence trend of various factors on the intensity of the halo through the established model, and proposed a hardware‐based halo improvement scheme. At the same time, the model also helped to establish the evaluation standard of the halo. [ABSTRACT FROM AUTHOR]

Carbon allocation has been fundamental for long‐lived trees to survive cold stress at their upper elevation range limit. Although carbon allocation between non‐structural carbohydrate (NSC) storage and structural growth is well‐documented, it still remains unclear how ongoing climate warming influences these processes, particularly whether these two processes will shift in parallel or respond divergently to warming. Using a combination of an in situ downward‐transplant warming experiment and an ex situ chamber warming treatment, we investigated how subalpine fir trees at their upper elevation limit coordinated carbon allocation priority among different sinks (e.g., NSC storage and structural growth) at whole‐tree level in response to elevated temperature. We found that transplanted individuals from the upper elevation limit to lower elevations generally induced an increase in specific leaf area, but there was no detected evidence of warming effect on leaf‐level saturated photosynthetic rates. Additionally, our results challenged the expectation that climate warming will accelerate structural carbon accumulation while maintaining NSC constant. Instead, individuals favored allocating available carbon to NSC storage over structural growth after 1 year of warming, despite the amplification in total biomass encouraged by both in situ and ex situ experimental warming. Unexpectedly, continued warming drove a regime shift in carbon allocation priority, which was manifested in the increase of NSC storage in synchrony to structural growth enhancement. These findings imply that climate warming would release trees at their cold edge from C‐conservative allocation strategy of storage over structural growth. Thus, understanding the strategical regulation of the carbon allocation priority and the distinctive function of carbon sink components is of great implication for predicting tree fate in the future climate warming. [ABSTRACT FROM AUTHOR]