黄河流域开封段植被覆盖遥感监测研究

Remote Sensing Monitoring of Vegetation Coverage in Kaifeng Section of the Yellow River Basin

植被覆盖度是反映某一区域的生态环境建设、绿化水平的重要指标,本文以黄河流域开封段为研究对象,使用NDVI-MVC数据反演研究区2016—2021年年度最大植被覆盖度,并分析植被覆盖度的时间变化特征和空间分布格局;结合Theil-SenMedian趋势分析和Mann-Kendall显著性检验,分析研究区内植被覆盖的演变趋势特征;最后使用Pearson相关性分析法,分析气温和降水量对植被覆盖的影响。研究了黄河流域开封段的植被覆盖时空变化及其影响因素,可以为该地区的生态环境保护、生态文明建设和水土保持监测等提供有效的理论支持和决策依据。

Vegetation coverage is an important indicator reflecting the ecological environment construction and greening level of a re-gion.Taking Kaifeng section of the Yellow River basin as the research object,this research uses NDVI-MVC data to inverse the annu-al maximum vegetation coverage in the study area from 2013 to 2020 and analyze the temporal variation characteristics and spatial dis-tribution pattern of vegetation coverage;combined with Theil-Sen Median trend analysis and Mann-Kendall significance test,it analy-zes the evolution trend characteristics of vegetation coverage in the study area;finally,Pearson correlation analysis method is used to analyze the impact of temperature and precipitation on vegetation coverage.The study on the temporal and spatial changes of vegetation coverage and its influencing factors in Kaifeng section of the Yellow River basin can provide effective theoretical support and decision-making basis for ecological environment protection,ecological civilization construction and soil and water conservation monitoring in this region.