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当前位置: 首页 > 文章 > 近10年汾河流域植被覆盖时空变化研究 山东农业大学学报(自然科学版) 2017,48 (6) 824-831
Position: Home > Articles > Temporal and Spatial Variations of Vegetational Coverage in Fenhe River Basin during 10 Years Journal of Shandong Agricultural University(Natural Science Edition) 2017,48 (6) 824-831

近10年汾河流域植被覆盖时空变化研究

作  者：
韩丽君;李晶
关键词：
植被覆盖;汾河流域;时空变化
摘  要：
本文基于MODIS遥感影像,采用VFC指数反演了汾河流域2004~2013年16 d步长的植被覆盖时空演化过程.结合研究区气温、降水、海拔、坡度、坡向5个自然环境因子,定性评价与定量统计相结合分析VFC的空间格局及时间演化规律,探索植被覆盖与环境因子的时空分布关系.结果表明:植被覆盖在流域边缘,即对应的吕梁山区和太行山区状况较好;植被覆盖与降水的相关性表现为北部高,南部低的特点;植被覆盖与气温的相关性表现为流域边缘高,中间低的特点.从时间分布来看,植被覆盖与降水和气温的分布曲线具有一致的波形,但波峰提前一个步长.从植被的地形分布来看,植被覆盖率在坡度为0°~3°的阴坡,海拔为500 m以下最高.
译  名：
Temporal and Spatial Variations of Vegetational Coverage in Fenhe River Basin during 10 Years
关键词：
Vegetational coverage%Fenhe River Basin%temporal and spatial variation
摘  要：
Based on MODIS remote sensing images, the VFC index is used to retrieve the spatial and temporal evolution process of vegetation coverage in the Fen River Basin at 16 D step lengths from 2004 to 2013. Combined with 5 natural environment factors, temperature, precipitation, elevation, slope and slope aspect in the study area, qualitative evaluation and quantitative statistics were used to analyze the spatial pattern and temporal evolution of VFC, and to explore the temporal and spatial distribution relationship between vegetation cover and environmental factors. The results showed the vegetation coverage is better at the edge of the basin, that is, the corresponding Lvliang mountain area and Taihang Mountain Area. The correlation between vegetation cover and precipitation is high in the north and low in the south, the correlation between vegetation cover and temperature is high in edge and low in center. From the time distribution, the distribution curve of vegetation cover is consistent with that of precipitation and temperature, but the crest of the wave is a step length in advance, from the topographic distribution of vegetation, there was the highest vegetation coverage at a schattenseite of 0°~3° slope and below 500 m altitude.

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