摘要
祁连山保护区作为国家重要的自然保护地之一,明确其生态环境时空状况及其驱动机制对生态系统健康及生态文明建设效益评价具有重要意义。基于绿度指标、湿度指标、热度指标、干度指标、气溶胶光学厚度指标、气候调节实物量、碳固定实物量七项指标,采用主成分分析方法构建生态环境质量综合指数(EEQCI),分析了2003—2022年祁连山保护区EEQCI的时空演变特征,并对其主要影响因素进行了探究。主要结论如下:①2003—2022年祁连山保护区EEQCI年均值介于0.449~0.536之间,且整体呈波动上升趋势,说明研究期内研究区生态环境质量一般,但整体在不断变好。②研究期内研究区EEQCI总体呈“东部和中部高、西部低”的空间分布格局;研究期内,生态环境质量保持不变的区域面积约占研究区总面积的60%,生态环境质量改善的区域面积约占研究区总面积的37%。③研究区生态环境质量时空演变的主要影响因素为土地利用强度、海拔高度、年均气温,且两两因子的交互作用影响更为显著,土地利用强度与各因素的交互作用程度最强,年均降水与各因素的交互作用表现方式多为非线性增强。
As one of the important national nature reserves,it is of great significance to clarify the spatiotemporal status and driving mechanism of the ecological environment in Qilian Mountain Nature Reserve for evaluating the benefits of ecosystem health and ecological civilization construction.Based on seven indexes including greenness index,humidity index,heat index,dryness index,aerosol optical depth index,physical quantity of climate regulation,and physical quantity of carbon sequestration,the principal component analysis method was employed to establish the comprehensive index of ecological environment quality(EEQCI).The spatiotemporal evolution characteristics of EEQCI in Qilian Mountain Nature Reserve from 2003 to 2022 were analyzed,and the main influencing factors were explored.The main conclusions are as follows:①From 2003 to 2022,the annual average EEQCI of Qilian Mountain Nature Reserve ranged from 0.449 to 0.536,and showed a fluctuating upward trend,indicating that the ecological environment quality of the study area was general during the research period,but the overall situation was constantly improving.②During the research period,the overall spatial distribution pattern of EEQCI in the study area washigh in the eastern and central regions,and low in the west regions.During the study period,the area of the region where the ecological environment quality remained unchanged accounted for about 60%of the total area of the study area,and the area of the region where the ecological environment quality improved accounted for about 37%of the total area of the study area.③The main influencing factors of the spatiotemporal evolution of ecological environment quality in the study area were land use intensity,altitude,and annual average temperature,and the interaction between the two factors was more significant.The interaction between land use intensity and each other factor was the strongest,and the interaction between annual average precipitation and each other factor was mostly non-linear enhancement.
作者
张伊琳
高尚
苏惠敏
梁程
ZHANG Yilin;GAO Shang;SU Huimin;LIANG Cheng(Kaifeng Meteorological Bureau,Kaifeng 475004,Henan China;School of Geography and Tourism,Shaanxi Normal University,Xi’an 710119,China;School of Tourism Management,Henan Finance University,Zhengzhou 450046,China;Pingshan School Affiliated to Southern University of Science and Technology,Shenzhen 518118,Guangdong China)
出处
《河南科学》
2025年第8期1172-1181,共10页
Henan Science
基金
国家自然科学基金项目(42371316)。
关键词
生态环境质量
时空格局
影响因素
祁连山保护区
ecological environment quality
spatiotemporal pattern
influencing factor
Qilian Mountain Nature Reserve
