摘要
景观生态质量是衡量生态系统稳定度的重要指标。基于景观稳定性、景观干扰度和恢复与重建力三个层面构建景观生态质量评估模型,探究了陕北黄土高原20 a来景观生态质量及时空变化,并利用地理探测器进行了驱动力分析。结果表明:陕北黄土高原景观生态质量呈现中南部高、西部及北部低的分布特征,空间相关性和异质性显著;景观生态质量等级在中等及以上的区域面积占比由40.0%上升至63.5%,景观生态质量明显改善,并呈现先下降后上升的变化趋势;区域景观生态质量受自然因子和人为因子的共同作用,NDVI和高程是主要驱动因子,且与降水、气温、GDP和人口密度等因素交互后驱动力增强。
Landscape ecological quality is an important indicator of the degree of ecosystem stability.A landscape ecological quality model was constructed based on three dimensions,namely,landscape stability,landscape disturbance,and restoration and reconstruction power,and landscape ecological quality and spatial and temporal changes in the Loess Plateau region of northern Shaanxi Province over the past 20 years were explored,and the driving force analysis was carried out by using GeoDetector model.The results show that the landscape ecologi-cal quality of the Loess Plateau in northern Shaanxi presents a high distribution in the south-central region and a low distribution in the west and the north,with significant spatial correlation and heterogeneity.The proportion of the area with medium or higher landscape ecological quality is increased from 40.0%to 63.5%and the landscape ecological quality improves significantly,showing a decreasing and then increas-ing trend.The regional landscape ecological quality is affected by both natural and anthropogenic factors,and NDVI and DEM are the main driving factors,and their explanatory power is enhanced by interacting with factors such as precipitation,air temperature,GDP and popula-tion density.
作者
项曦明
丁诗雨
赵永华
康宏亮
韩磊
赵明
张鹏
XIANG Ximing;DING Shiyu;ZHAO Yonghua;KANG Hongliang;HAN Lei;ZHAO Ming;ZHANG Peng(College of Land Engineering,Chang’an University,Xi’an 710054,China;Key Laboratory of Degraded and Unused Land Remediation Engineering,Ministry of Natural Resources,Xi’an 710054,China;Key Laboratory of Land Consolidation and improvement of Shaanxi Province,Xi’an 710054,China)
出处
《人民黄河》
CAS
北大核心
2024年第4期92-98,116,共8页
Yellow River
基金
陕西省创新能力支撑计划创新团队项目(2024RS-CXTD-55)
自然资源部退化及未利用土地整治工程重点实验室开放基金资助项目(SXDJ2019-03)
中央高校基本科研业务费专项(300102270206)。
关键词
景观生态质量
时空分异
驱动力
地理探测器
陕北黄土高原
landscape ecological quality(LEQ)
spatial-temporal differentiation
driving force
GeoDetector model
Loess Plateau in northern Shaanxi
作者简介
项曦明(2000-),女,安徽亳州人,硕士研究生,研究方向为景观生态;通信作者:赵永华(1975-),男,内蒙古赤峰人,教授,博士,研究方向为土地整治与生态修复、景观生态等,E⁃mail:yonghuaz@chd.edu.cn。
