摘要
生态系统服务对于提升区域生态环境质量、构建国土生态安全格局以及应对全球气候变化等各方面均发挥着重要作用.以秦岭-大巴山为研究区,基于土地利用遥感数据,应用土地利用转移矩阵、当量因子法、空间数据探索分析和地理探测器等方法,探索1980-2018年期间秦巴山地土地利用变化趋势、秦巴山地生态系统服务价值的尺度响应特征、生态系统服务价值时空演变特征及其空间分异的驱动机制.研究结果表明:(1)秦巴山地主要的土地利用类型为林地、草地和耕地.在这38年里土地利用变化阶段性特征明显.(2)选择9 km×9 km作为秦巴山地生态系统服务价值空间分异的特征尺度,基于该尺度便于较为全面地把握研究区生态系统服务价值的空间分异特征和规律.(3)1980-2018年以来,秦巴山地生态系统服务价值呈“先稳定后下降”的波动式下降趋势.其中林地和耕地对研究区ESV总量的贡献率最高;从省域来看,陕西省区域则是秦巴山地ESV总量的主要组成部分,38年来研究区生态系统服务价值变化主要发生在局部地区,有必要加强秦巴山地边缘区域的生态功能优化调整.(4)地理探测器的分析结果表明,积温和高程对秦巴山地ESV空间分异的解释力最为显著,而NDVI和积温、降水和高程、降水和积温、GDP和积温的因子交互作用对秦巴山地ESV空间分异的影响较强.研究结果为更加科学合理地管理秦巴山地生态系统服务提供理论支持.
Ecosystem services play an important role in improving the quality of the regional ecological environment,building the national land ecological security pattern,and responding to global climate change.Taking Qinling Mountains and Daba Mountains as the research area,based on land use remote sensing data,this paper uses land use transition matrix,equivalent factor method,spatial data exploration analysis and geographic detectors to explore the land use change trend,the scale response characteristics of ecosystem service value in Qinling-Daba Mountain,the temporal and spatial evolution characteristics of ecosystem service value and the driving mechanism of spatial differentiation in Qinling-Daba Mountain from 1980 to 2018.The results show that:(1)The main land use types in Qinling-Daba Mountain are forest land,grassland and cultivated land.During these 38 years,the phase characteristics of land use change are obvious.(2)9 km×9 km is the characteristic scale of the spatial differentiation of ecosystem service value in Qinling-Daba Mountain.Based on this scale,it is convenient to comprehensively grasp the spatial differentiation characteristics and laws of ecosystem service value in the study area.(3)From 1980 to 2018,the ecosystem service value of Qinling-Daba Mountain showed a fluctuating downward trend of“stabilizing first and then decreasing”.Among them,forest land and cultivated land have the highest contribution rate to the total ESV in the study area;from a provincial perspective,Shaanxi Province is the main component of the total ESV in the Qinling-Daba Mountain.The changes in the ecosystem service value of the study area over the past 38 years mainly occurred in local areas.Therefore,it is necessary to strengthen the optimization and adjustment of ecological functions in the border areas of Qinling-Daba Mountain.(4)The analysis results of geographic detectors show that accumulated temperature and elevation have the most significant explanatory power for the spatial differentiation of ESV in Qinling-Daba Mountain.The effect of spatial differentiation is stronger.The research results provide theoretical support for more scientific and rational ecosystem service management in Qinling-Daba Mountain.
作者
卢荣旺
殷浩然
朱连奇
邹泽铎
田卡吨
LU Rongwang;YIN Haoran;ZHU Lianqi;ZOU Zeduo;TIAN Kadun(College of Geography and Environmental Science/Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Region,Ministry of Education,Henan University,Henan Kaifeng 475004,China)
出处
《河南大学学报（自然科学版）》
CAS
2022年第4期379-391,共13页
Journal of Henan University:Natural Science
基金
国家科技基础资源调查专项(2017FY100902)
关键词
生态系统服务价值
土地利用变化
秦巴山地
当量因子法
地理探测器
ecosystem service value
land use change
Qinling-Daba Mountain
equivalent factor method
geographic detector
