长辛店老镇11株国槐已达古树标准

Core Viewpoint - The article highlights the discovery of ancient trees in Changxindian, a historical area in Beijing, emphasizing the need for their protection and recognition as cultural heritage [1][2]. Group 1: Historical Significance - Changxindian, located along the Yongding River, was a significant commercial hub during the Ming and Qing dynasties, with a main street that has been preserved for over 2.5 kilometers [1]. - The area has undergone urban renewal, attracting attention from various sectors due to its rich historical background [1]. Group 2: Ancient Tree Identification - According to the Beijing Ancient Tree Evaluation Standards, trees are classified based on their age and trunk diameter, with specific thresholds for ancient tree status [2]. - Eleven Chinese scholar trees (Gongqiao) in Changxindian have been identified as meeting the criteria for secondary ancient trees, with diameters ranging from 60 to 69 centimeters [2]. - Notably, one tree has a circumference of 255 centimeters, translating to a diameter of approximately 81 centimeters, exceeding the secondary ancient tree standard by 21 centimeters [2][3]. Group 3: Cultural and Scenic Value - The "Changxin Huaiyin" is recognized as one of the ten cultural landscapes of Fengtai, highlighting the aesthetic and historical importance of the tree-lined streets [6]. - Urban planning documents emphasize the need to protect the tree-lined landscape along Changxindian Street, restricting tree removal unless in exceptional circumstances [6]. Group 4: Current Protection Measures - Initial protective measures have been implemented, including wrapping tree trunks and placing warning signs to prevent vehicle collisions [9]. - Currently, there are six officially recognized ancient trees in the area, which receive specialized care, while ordinary street trees lack similar protection [9][11].