From benefit to burden: Assessing the full range of health impacts in urban green spaces using a threshold model.

Urban residents increasingly value the health benefits of natural exposure, highlighting the role of green spaces in early disease prevention. While the positive health impacts of green space exposure are well-documented, the negative physiological effects remain less understood. This study introduces an advanced threshold model designed to capture both the positive and negative physiological impacts of green space exposure.

Formation of single-dominant-species patches of primarily influenced by understory light intensity.

Introduction: The fern community plays vital roles in nutrient sequestration, succession regulation, and ecological threshold control. However, the mechanisms underlying the formation of the -dominant community remain unclear.

Methods: This study established four different community types to investigate the effects of environmental factors on the formation of a -dominant community.

Effects of the recovery period after particulate matter pollution events on the dust retention capacity and physiological characteristics of Nerium oleander.

Plants are known for their significant dust retention capacity and are widely used to alleviate atmospheric pollution. Urban green plants are exposed to periodic particulate matter pollution stress, and the time intervals between periods of pollution exposure are often inconsistent. The impact of stress memory and pollution intervals on plant dust retention capacity and physiological characteristics during periodic stress is not yet clear.

Atmospheric particulate matter retention capacity of bark and leaves of urban tree species.

Urban vegetation can effectively filter and adsorb particulate matter (PM). However, limited studies have been conducted on the PM retention capacity of tree barks. This study investigated the ability of five common urban tree species in the Yangtze River Delta region to retain PM through their barks and leaves by conducting a 14-day tree PM retention experiment on the five tree species during autumn and winter.