摘要
基于2013、2017和2021年的Landsat-8 OLI/TIRS影像,计算河南连康山国家级自然保护区的遥感生态指数(RSEI),并结合高程、坡度和坡向等数据探讨RSEI的变化与地形特征的关系。结果表明:(1)研究区2013、2017和2021年的RSEI平均值分别为0.251、0.397和0.597,呈现出逐渐上升态势,生态环境质量持续改善。核心区和缓冲区的生态环境质量不均衡发展趋势加重,实验区则趋于平衡。(2)RSEI变化以轻微改善和显著改善为主,主要集中分布于中部和南部,净改善面积为79.67 km^(2),占比75.30%。(3)中海拔(309~464 m)、坡度5°~35°以及阳坡(南、西南、西、西北)区域是RSEI降低的主要区域,建议加大该区域的保护治理力度,促进保护区生态环境质量的提升。
Based on Landsat-8 OLI/TIRS images in 2013,2017 and 2021,the remote sensing ecological index(RSEI)of Henan Liankang Mountain National Nature Reserve was calculated in three periods,and the relationship between RSEI change and topographic characteristics was explored by combining elevation,slope and aspect data.The results showed that:(1)The average RSEI values of the study area in 2013,2017 and 2021 were 0.251,0.397 and 0.597,respectively,showing a gradual upward trend,and the ecological environment quality continued to be improved.The unbalanced development trend of eco-environmental quality in the core area and buffer zone has intensified,while the experimental area has tended to be balanced.(2)RSEI changes were dominated by slight improvement and significant improvement,mainly distributed in the central and southern parts of the study area,with a net improvement area of 79.67 km^(2),accounting for 75.30%.(3)Middle elevation(309~464 m),slope(5°~35°)and sunny slope(south,southwest,west and northwest)are the main areas for RSEI reduction,and it is recommended to increase the protection and governance of this area to promote the improvement of the ecological environment quality of the reserve.
作者
陈亮
孙钰蘅
CHEN Liang;SUN Yuheng(College of Tourism,Xinyang Normal University,Xinyang 464000,China;Institute of Urban and Rural Governance,China Academy of Urban Planning and Design,Beijing 100044,China)
出处
《信阳师范学院学报（自然科学版）》
CAS
2024年第1期11-17,共7页
Journal of Xinyang Normal University(Natural Science Edition)
基金
国家自然科学基金项目(42207533)
河南省高等学校重点科研项目(22A170011)。
关键词
生态环境质量
遥感生态指数
地形效应
连康山
国家级自然保护区
ecological environment quality
remote sensing ecological index
terrain effects
Liankang mountain
national nature reserve
