2月19日，正月初三，河南省洛阳市栾川县气象局业务平台灯火通明，综合业务岗工程师杨孟同志坚守 岗位，全天候监测、滚动研判，及时制作发布春节专题气象预报、灾害性天气预警信息。用心用情做好 春节气象保障，用责任与担当书写最美"敬业福"。 正月初三 的老君山，游人如织。洪兴旗 摄影 从高山台站的风雪坚守，到景区一线的精细护航，栾川气象人以初心赴使命，以坚守护团圆，用平凡岗 位上的默默付出，汇聚成守护万家灯火的坚实力量。他们把对家乡的热爱、对事业的忠诚，融入每一组 观测数据、每一次预报研判、每一项服务保障中，用专业与奉献诠释了"忠诚为民、精准及时、创新奉 献"的气象优良传统。 （作者：李志光 责任编辑：张林） 记者了解到，聚焦游客"观美景"需求，栾川县气象局在老君山重点区域建成3套梯度观测系统，实现不 同海拔气象要素立体监测；同步建设1套负氧离子观测站，可开展林下可燃物含水量常态化观测，构 建"天地一体、上下协同、要素齐全"的全方位监测体系。针对山区小气候复杂、天气变化快的特点，开 杨孟同志 查看卫星云图，利用格点预报平台制作景区精细化预报产品。张钰 摄影 展分区域、分时段、分景点精细化预报，重点提供山顶气温、风力、 ...

Core Insights - The peak viewing period for autumn leaves in Beijing has been delayed by about a week this year due to unfavorable weather conditions and plant diseases [5][6][9] - The best viewing period for red leaves in major parks like Fragrant Hills is from October 25 to November 15, with a red leaf rate of up to 80% for certain species [5][9] Weather Conditions - The combination of high temperatures and prolonged rainy weather in September and early October has negatively impacted the color change of leaves [6][8] - Ideal conditions for leaf color change include significant temperature drops and strong sunlight, which were lacking earlier in the season [6][8] Plant Health Issues - The health of the yellow-leaf trees has been compromised by diseases such as powdery mildew and wilt disease, affecting their ability to change color [8][9] - The wilt disease is caused by a soil-borne fungus that has persisted in the soil for years, complicating control efforts, especially in mountainous areas [9] Viewing Opportunities - Despite the delay in red leaf color change, other colorful foliage can be found in various parks, including ginkgo and purple leaf plants, providing diverse viewing options [11][12][14] - The Olympic Forest Park is highlighted for its vibrant ginkgo trees, which have already turned bright yellow, attracting many visitors [11][12]

Core Viewpoint - The article highlights the beauty of autumn in Beijing, emphasizing the vibrant colors of leaves and the enjoyment of visitors, while also addressing the negative impact of some tourists' behaviors on the environment and local wildlife [3][10][22]. Group 1: Autumn Experience - Beijing's autumn showcases a variety of colorful leaves, with parks like Tian Tan, Di Tan, and Xiang Shan displaying trees such as ginkgo, maple, and yellow horn [3][10]. - Visitors are actively engaging in activities like collecting leaves and fruits, creating unique decorations and art pieces [7][10]. Group 2: Environmental Concerns - Some tourists exhibit uncivilized behaviors, such as picking leaves from trees and climbing them for better photos, which can damage the trees [10][12]. - Reports indicate that certain trees, like persimmon trees, have been stripped of their fruits due to excessive picking, leading to broken branches and potential harm to the plants [12][22]. Group 3: Wildlife Impact - The collection of nuts and fruits by visitors can significantly affect local wildlife, as these are essential food sources for animals during winter [19][22]. - Unregulated feeding of wild animals by tourists poses health risks to the animals and can lead to pollution of water bodies [20][22].