摘要
【目的】科学评估该区域景观生态风险,对于优化大都市外围区土地资源配置具有重要参考意义。【方法】基于2000年、2010年和2020年的土地利用数据,通过构建景观生态风险模型,对土地利用变化下廊坊市北三县景观生态风险进行评价。【结果】(1)2000—2020年期间,耕地和建设用地之和占总土地利用的95%以上,其中,耕地面积减少了23.01%,建设用地增加了104.57%;(2)2000—2020年,廊坊市北三县景观生态风险等级呈上升趋势,低风险区和较低风险区面积占比从71.61%降至30.85%,高风险区和较高风险区面积占比从9.58%增至35.61%;(3)2000—2020年廊坊市北三县的景观生态风险均呈较强的空间自相关性,以“低-低”和“高-高”聚集模式为主。【结论】廊坊市北三县要根据生态风险空间差异,注重分类施策,推动区域实现经济社会发展和生态环境保护的双赢。
【Objective】Scientific assessment of the regional landscape ecological risk is of great significance for optimizing the allocation of land resources.【Method】Based on the land use data in 2000,2010 and 2020,the landscape ecological risk model was constructed to evaluate the landscape ecological risk of the three northern counties of Langfang City under the change of land use.【Result】(1)From 2000 to 2020,cultivated land and construction land were the main landscapes in the three northern counties of Langfang City,and the sum of the two accounted for more than 95%of the total land use.During the study period,the area of cultivated land decreased by 23.01%,and the construction land increased by 104.57%.(2)From 2000 to 2020,the landscape ecological risk of the three northern counties of Langfang City showed an upward trend.The proportion of low-risk areas and lower-risk areas decreased from 71.61%in 2010 to 30.85%in 2020,and the proportion of high-risk areas and higher-risk areas increased from 9.58%in 2000 to 35.61%in 2020.(3)Three periods of landscape ecological risk in the three northen counties of Langfang City from 2000 to 2020 showed a positive spatial autocorrelation,mainly in the‘low-low’and‘high-high’aggregation modes.【Conclusion】According to the spatial differences of ecological risks,the three northen counties of Langfang City should pay attention to the classification of policies and promote the win-win situation of economic,social and ecological environment protection in the region.
作者
姚罗兰
李魁明
YAO Luolan;LI Kuiming(International Education College,Beijing Vocational College of Agricultural,Beijing 100012,China;College of Emergency Management,Institute of Disaster Prevention,Sanhe 065201,China)
出处
《湖南生态科学学报》
2025年第1期90-97,共8页
Journal of Hunan Ecological Science
基金
河北省社会发展研究课题(20210101026)。
关键词
大都市外围区
土地利用
景观生态风险
空间自相关
peripheral areas of metropolis
land use
landscape ecological risk
spatial autocorrelation
