京西老矿区发现一株国槐，胸径超京城“槐王”！附近还有多株国槐达标一级古树，也未挂牌保护

Core Viewpoint - A significant ancient tree, a national locust tree, was discovered in the Beiling area of Beijing, surpassing the size of the city's oldest known locust tree, but it lacks a protective plaque and its health is concerning [1][4][5]. Group 1: Discovery and Condition of the Tree - The tree, located in Xiaodianzicun, has a trunk circumference of 685 cm, translating to an approximate diameter of 218 cm, which exceeds the standard for first-class ancient trees in Beijing by 174 cm [6][7]. - The tree's health is deteriorating, with sparse leaves and a hollow trunk, raising concerns about its survival [4][9]. - The absence of a protective plaque indicates it may have been overlooked during previous surveys of ancient trees [3][4]. Group 2: Historical Context and Significance - The Beiling area has a rich history tied to coal mining, which led to the establishment and subsequent decline of local villages, resulting in the neglect of ancient trees [13][14]. - The locust tree is emblematic of the cultural and ecological heritage of the area, and its preservation is deemed essential for historical and environmental reasons [4][14]. - The region's ancient trees, including the one in Xiaodianzicun, have not been adequately documented or protected, leading to their gradual decline [13][14].