Core Viewpoint - The article discusses the increasing pollen allergy issues caused by Artemisia plants in northern China, particularly in cities like Hohhot, Beijing, and Taiyuan, and suggests scientific regional management strategies to mitigate these problems [2][3]. Group 1: Pollen Allergy Issues - Many residents in northern China are suffering from pollen allergies, with Hohhot experiencing high levels of allergy risk since September [2]. - The pollen from Artemisia plants, which are prevalent in the region, is identified as a major allergen, particularly during their flowering period in August and September [2][3]. Group 2: Ecological Role of Artemisia - Artemisia plants have historically played a significant role in combating desertification in northern China, with over 60 species present in Inner Mongolia [2][3]. - These plants were crucial in transforming shifting sand dunes into semi-fixed and fixed dunes, preventing the burial of agricultural and residential areas [2][3]. Group 3: Pollen Spread Characteristics - The spread of Artemisia pollen is influenced by plant height, pollen quantity, and weather conditions, with studies indicating that pollen can travel distances of up to 400 kilometers [3]. - Effective management strategies include removing Artemisia plants before they flower and using flowering inhibitors to reduce pollen production [3][4]. Group 4: Long-term Management Strategies - A two-pronged approach is recommended: early removal of Artemisia plants and the use of flowering inhibitors, which have shown to reduce flowering rates by 28.2% to 83.9% [3][4]. - For sustainable management, it is suggested to gradually replace Artemisia with other plants like Haloxylon ammodendron, which have lower pollen production and similar ecological benefits [5]. Group 5: Resource Utilization - The article emphasizes the need for a balanced approach to managing Artemisia, recognizing its ecological contributions while addressing public health concerns [5]. - There is potential for utilizing Artemisia as a biomass resource, despite its low palatability to livestock [5].