甘肃兴隆山地区植被覆盖度时空变化分析

Spatial and Temporal Variation of Fractional Vegetation Coverage in Xinglongshan Area of Gansu Province

为深入研究兴隆山地区植被演化规律,指导该地区合理开发和保护植被资源,本研究选用兴隆山地区1980—2020年植被覆盖度变化遥感影像数据,分析该地区植被覆盖度时空变化规律。结果表明:兴隆山1980—2020年植被覆盖度整体向好发展,时空变化明显。时间变化上,该地区植被覆盖度总体呈上升趋势,低植被覆盖区逐渐发展为高植被覆盖区和中高植被覆盖区,高植被覆盖区面积逐渐增大,分别由1980年的55.78 km^(2)、54.90 km^(2)增长为2020年的141.33 km^(2)、87.81 km^(2);空间变化上,高植被覆盖区主要分布在兴隆山地区的东北方向,低植被覆盖区主要分布在西南方向。经过封山育林保护林草资源,兴隆山地区植被恢复工作取得良好成效。

In order to deeply explore the rule of vegetation evolution in Xinglongshan area and guide the rational development and protection of vegetation resources in this area,we selected the remote sensing image data of vegetation coverage changes in Xinglongshan area from 1980 to 2020 to analyzed the spatial and temporal variation of vegetation coverage in this area.The results showed that the vegetation coverage of Xinglongshan developed positively from 1980 to 2020,and the temporal and spatial changes were obvious.In terms of time change,the fractional vegetation coverage in this area showed an upward trend.The high vegetation cover area and the medium-high vegetation cover area gradually developed from the low vegetation cover area,and the area increased gradually from 55.78 km^(2)and 54.90 km^(2)in 1980 to 141.33 km^(2)and 87.81 km^(2)in 2020,respectively.In terms of spatial change,the high vegetation cover area is mainly distributed in the northeast of Xinglongshan area,and the low vegetation cover area is mainly distributed in the southwest.After closing mountains to cultivate forests and protecting forest and grass resources,good results have been achieved in vegetation restoration in Xinglongshan area.