A study of dynamic functional connectivity changes in flight trainees based on a triple network model.

The time-varying functional connectivity of the Central Executive Network (CEN), Default Mode Network (DMN), and Salience Network (SN) in flight trainees during a resting state was investigated using dynamic functional network connectivity (dFNC). The study included 39 flight trainees and 37 age- and sex-matched healthy controls. Resting-state fMRI data and behavioral test outcomes were obtained from both groups.

The effects of flight training on flying cadets' brain structure.

In recent years, the impact of professional training on brain structure has sparked extensive research interest. Research into pilots as a high-demand, high-load, and high-cost occupation holds significant academic and economic value. The aim of this study is to investigate the effects of flight training on the brain structure and cognitive functions of flying cadets.

Comprehensive evaluation of carbon sequestration potential of landscape tree species and its influencing factors analysis: implications for urban green space management.

Background: Continuous increasing carbon dioxide (CO) has aggravated global warming and promoted urban tree planting projects for many countries. So it's imperative to select high carbon sequestering landscape tree species while considering their aesthetic values of urban green space.

Results: 32 tree species were selected as test objects which were commonly used in landscaping in Zhengzhou, a typical northern city of China.

[Spatial distribution of plant diversity in shrub layer of plantation and its relationship with light environment].

We analyzed the spatial heterogeneity of plant species diversity in shrub layers and its relationship with light environment in plantation and - mixed forest, following the method of geostatistics. The results showed that plant species diversity indices (Shannon , Simpson , Margalef ) of shrub layers in plantation were significantly lower than that in - mixed forest. The variation ranges and spatial autocorrelation distances of plant species diversity index in plantation were higher than that in - mixed forest, with lower spatial homogeneity but stronger spatial dependence.

Natural regeneration of trees in three types of afforested stands in the Taihang Mountains, China.

Natural regeneration is the natural process by which plants replace themselves. It is a cost-effective way to re-establish vegetation, and it helps to preserve genetic identity and diversity. In this study, we investigated the natural regeneration of trees in three types of afforested stands in the Taihang Mountains, China, which were dominated by Robinia pseudoacacia (black locust), Quercus variabilis (Chinese cork oak) and Platycladus orientalis (Chinese arborvitae) respectively.