Abstract: Objective To grasp the current status of termite damage to ancient buildings in Nantong, China, and to strengthen the protection of these ancient buildings in Nantong. Methods The method of field survey combined with comprehensive and focused surveys were used to investigate the current status of termite damage to the ancient buildings in 43 cultural relic protection units above the municipal level in Chongchuan, Gangzha, Tongzhou, and the Economic Development District of Nantong. The termites collected inside and outside the ancient buildings were made into specimens and brought back to the laboratory for morphological identification, and the termite damage grade to ancient buildings was evaluated according to the relevant evaluation standards. Results A total of 43 ancient buildings were investigated from March 4 to July 15, 2019, and 25 of them were found to have suffered from varying degrees of termite damage, with a termite damage rate of 58.1%. Based on the identification of the termite specimens collected, it was found that the harmful species for ancient buildings belonged to 3 species, 2 genera, 1 family; two species of them were Reticulitermes chinensis and R. flaviceps belonging to the family Rhinotermitidae, genus Reticulitermes, and the other one species was Coptotermes formosanus belonging to the family Rhinotermitidae, genus Coptotermes. According to a statistical analysis, the damage to ancient buildings was mainly caused by Reticulitermes, of which R. chinensis was the dominant species with a damage rate of 44.2%, which was substantially higher than that of R. flaviceps (14.0%) and C. formosanus (4.7%). The grade assessment of termite damage was carried out in 25 ancient buildings, and the results showed that the termite damage levels belonging to grade Ⅰ, Ⅱ, and Ⅲ accounted for 30.2%, 18.6%, and 9.3% of the total number of surveys, respectively; among them, 2 ancient buildings were seriously damaged with a damage level of gradeⅢ, so it is urgent to carry out comprehensive termite control. Conclusion The status of termite damage to ancient buildings in Nantong has been preliminarily grasped, which provides a scientific basis for the decision-making and implementation of comprehensive termite prevention and control in ancient buildings in Nantong, China.

Key words: Ancient building, Termite, Damage, Investigation, Nantong

摘要： 目的 了解和掌握南通市古建筑白蚁危害现状，加强南通市古建筑的保护。方法 采用现场普查的方法，并采取全面调查和重点调查相结合的方式，对南通市崇川、港闸、通州和经济开发区范围内43处市级以上文物保护单位的古建筑进行白蚁危害现状调查。将在古建筑内和外围环境中采集的白蚁制作成标本，带回实验室进行形态学鉴定，并依据相关评定标准，对古建筑白蚁危害等级进行评定。结果 2019年3月4日至7月15日共计调查古建筑43处，发现其中25处古建筑遭受了不同程度的白蚁危害，古建筑白蚁危害率为58.1%。对采集到的白蚁标本进行鉴定，发现古建筑白蚁危害种类有1科2属3种，其中鼻白蚁科散白蚁属有2种，为黑胸散白蚁和黄胸散白蚁；鼻白蚁科乳白蚁属有1种，为台湾乳白蚁。经过统计分析，古建筑危害主要以散白蚁属为主，其中黑胸散白蚁为优势种，危害率为44.2%，明显高于黄胸散白蚁（14.0%）和台湾乳白蚁（4.7%）。25处古建筑白蚁危害等级评定结果显示，白蚁危害等级Ⅰ～Ⅲ级分别占调查总数的30.2%、18.6%和9.3%，其中2处古建筑危害程度已达3级，危害较严重，亟需进行古建筑的白蚁综合治理。结论 初步掌握了南通市古建筑白蚁危害情况，为南通市古建筑白蚁防治综合治理决策和实施提供了科学依据。

关键词: 古建筑, 白蚁, 危害, 调查, 南通市