期刊论文

Spatial and temporal variations of landscape ecological risk in the mountainous region of southwestern Hubei Province based on the optimal scale

中文

生态学杂志

1000-4890

2023

42

05

1186-1196

10.13292/j.1000-4890.202305.024

国家自然科学基金项目（42171061）； 国家科技基础资源调查专项（2021FY100505）资助；

本校为第一机构

探究景观生态风险对优化生态脆弱山区景观格局和加强生态管理具有重要意义。利用鄂西南山区多期土地利用数据，构建基于景观格局指数的生态风险评估模型，采用地统计、空间自相关和地学信息图谱等方法，探究最优尺度下山区景观生态风险的时空分异规律与变化趋势。结果表明：鄂西南山区景观生态风险分析最适宜尺度为50 m栅格和4 km网格；1990—2018年，鄂西南山区景观类型结构稳定性较强，以林地、耕地和草地为主，其中建设用地面积增量最大且持续扩张，并且以耕地的转出和生态用地之间的相互转换为主；景观生态风险整体呈下降趋势，等级以低、较低风险水平为主，局部高风险和低风险区存在交错分...

Investigation of landscape ecological risks is essential for optimizing landscape patterns and strengthening ecological management in ecologically fragile mountainous areas.Using multi-period land use data in the mountainous area of southwestern Hubei Province,we constr...MORE Investigation of landscape ecological risks is essential for optimizing landscape patterns and strengthening ecological management in ecologically fragile mountainous areas.Using multi-period land use data in the mountainous area of southwestern Hubei Province,we constructed an ecological risk assessment model based on l...