Soo-Dong Lee, C. Oh, Bong-Gyo Cho, Mindong Jin, Gyoung-Sik Park
{"title":"桥梁破碎化河道对大天鹅越冬种群变化的影响分析——以釜山洛东江为例","authors":"Soo-Dong Lee, C. Oh, Bong-Gyo Cho, Mindong Jin, Gyoung-Sik Park","doi":"10.11628/ksppe.2022.25.5.457","DOIUrl":null,"url":null,"abstract":"Background and objective: Fragmentation of river ecosystems is expected to affect biodiversity loss, but bridge construction is proceeding without consideration in urban areas. This study was conducted to determine the effect of internal environmental factors and river ecosystem fragmentation caused by bridge construction on the population of wintering whooper swans (Cygnus cygnus) in the Nakdong River of Busan Metropolitan City, a key wintering site for whooper swans.Methods: To compare the wintering population according to the distance between bridges, we surveyed and analyzed the current status of the population by period, distance between bridges, and land cover. One-way ANOVA and post-hoc test were conducted to confirm whether the differences in the environmental factors of the wintering sites, such as the distance between bridges, land cover status, and the number of wintering individuals, were statistically significant.Results: 83.6-94.7% of the wintering population in the lower Nakdong River were observed in Sec. 2 (Nakdong River Estuary Bank-Seobusan Nakdong River Bridge, 5.3 km) and Sec.4 (Gamjeon-Iron Bridge-Nakdong River Hwaengdansugwan Bridge, 3.6 km). As for the distance between the feeding and resting places of whooper swans and the bridges, whooper swans used the waterside and wetlands at an average distance of 1,147.5 m (10.9-2,611.2 m) from the bridge.Conclusion: Considering the weight of male swans and the presence of young individuals, as well as disturbance factors such as the noise and speed of vehicles crossing the bridges, it is necessary to maintain at least a 4 km distance between bridges for stable wintering. In addition, since fragmentation of river ecosystems has been confirmed to have an adverse effect on biodiversity, it would be desirable to keep the ecosystem intact and connected.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Analyzing the Effect of River Ecosystem Fragmentation by Bridges on Changes in the Wintering Population of Whooper Swans (Cygnus cygnus): Targeting the Nakdong River, Busan\",\"authors\":\"Soo-Dong Lee, C. Oh, Bong-Gyo Cho, Mindong Jin, Gyoung-Sik Park\",\"doi\":\"10.11628/ksppe.2022.25.5.457\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Background and objective: Fragmentation of river ecosystems is expected to affect biodiversity loss, but bridge construction is proceeding without consideration in urban areas. This study was conducted to determine the effect of internal environmental factors and river ecosystem fragmentation caused by bridge construction on the population of wintering whooper swans (Cygnus cygnus) in the Nakdong River of Busan Metropolitan City, a key wintering site for whooper swans.Methods: To compare the wintering population according to the distance between bridges, we surveyed and analyzed the current status of the population by period, distance between bridges, and land cover. One-way ANOVA and post-hoc test were conducted to confirm whether the differences in the environmental factors of the wintering sites, such as the distance between bridges, land cover status, and the number of wintering individuals, were statistically significant.Results: 83.6-94.7% of the wintering population in the lower Nakdong River were observed in Sec. 2 (Nakdong River Estuary Bank-Seobusan Nakdong River Bridge, 5.3 km) and Sec.4 (Gamjeon-Iron Bridge-Nakdong River Hwaengdansugwan Bridge, 3.6 km). As for the distance between the feeding and resting places of whooper swans and the bridges, whooper swans used the waterside and wetlands at an average distance of 1,147.5 m (10.9-2,611.2 m) from the bridge.Conclusion: Considering the weight of male swans and the presence of young individuals, as well as disturbance factors such as the noise and speed of vehicles crossing the bridges, it is necessary to maintain at least a 4 km distance between bridges for stable wintering. In addition, since fragmentation of river ecosystems has been confirmed to have an adverse effect on biodiversity, it would be desirable to keep the ecosystem intact and connected.\",\"PeriodicalId\":52383,\"journal\":{\"name\":\"Journal of People, Plants, and Environment\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-10-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of People, Plants, and Environment\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.11628/ksppe.2022.25.5.457\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"Social Sciences\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of People, Plants, and Environment","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.11628/ksppe.2022.25.5.457","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Social Sciences","Score":null,"Total":0}
引用次数: 0
摘要
背景与目的:河流生态系统的破碎化会影响生物多样性的丧失,但城市地区的桥梁建设却没有考虑到这一点。以大天鹅主要越冬地釜山市洛东江为例,研究了内部环境因素和桥梁建设引起的河流生态系统破碎化对大天鹅越冬种群的影响。方法:根据桥梁间距对越冬种群进行比较,按季节、桥梁间距、土地覆被对越冬种群现状进行调查分析。通过单因素方差分析和事后检验验证越冬地环境因子如桥梁间距、土地覆盖状况和越冬个体数量的差异是否具有统计学意义。结果:洛东江下游2段(洛东江入海口-西富山洛东江大桥,5.3 km)和4段(甘田-铁桥-洛东江黄丹素湾大桥,3.6 km)的越冬种群占83.6 ~ 94.7%。在大天鹅进食和休息的地点与桥梁的距离上,大天鹅利用水边和湿地,平均距离桥梁1147.5 m (10.9- 2611.2 m)。结论:考虑到雄天鹅的体重和幼天鹅的存在,以及过桥车辆的车速和噪音等干扰因素,桥与桥之间保持至少4 km的距离是稳定越冬的必要条件。此外,由于河流生态系统的碎片化已被证实对生物多样性有不利影响,因此保持生态系统的完整和联系是可取的。
Analyzing the Effect of River Ecosystem Fragmentation by Bridges on Changes in the Wintering Population of Whooper Swans (Cygnus cygnus): Targeting the Nakdong River, Busan
Background and objective: Fragmentation of river ecosystems is expected to affect biodiversity loss, but bridge construction is proceeding without consideration in urban areas. This study was conducted to determine the effect of internal environmental factors and river ecosystem fragmentation caused by bridge construction on the population of wintering whooper swans (Cygnus cygnus) in the Nakdong River of Busan Metropolitan City, a key wintering site for whooper swans.Methods: To compare the wintering population according to the distance between bridges, we surveyed and analyzed the current status of the population by period, distance between bridges, and land cover. One-way ANOVA and post-hoc test were conducted to confirm whether the differences in the environmental factors of the wintering sites, such as the distance between bridges, land cover status, and the number of wintering individuals, were statistically significant.Results: 83.6-94.7% of the wintering population in the lower Nakdong River were observed in Sec. 2 (Nakdong River Estuary Bank-Seobusan Nakdong River Bridge, 5.3 km) and Sec.4 (Gamjeon-Iron Bridge-Nakdong River Hwaengdansugwan Bridge, 3.6 km). As for the distance between the feeding and resting places of whooper swans and the bridges, whooper swans used the waterside and wetlands at an average distance of 1,147.5 m (10.9-2,611.2 m) from the bridge.Conclusion: Considering the weight of male swans and the presence of young individuals, as well as disturbance factors such as the noise and speed of vehicles crossing the bridges, it is necessary to maintain at least a 4 km distance between bridges for stable wintering. In addition, since fragmentation of river ecosystems has been confirmed to have an adverse effect on biodiversity, it would be desirable to keep the ecosystem intact and connected.