2000～2008年长白山地区植被覆盖变化特征

利用2000～2008年250 m分辨率MODIS/NDVI数据,结合谐波分析、影像处理和多种统计方法分析长白山地区的植被覆盖年内和年际变化特征,并结合区划图和植被类型图对不同区域和不同植被类型的植被覆盖变化进行分析.结果显示:近9年长白山地区覆盖总体呈上升趋势,其中春季植被覆盖略有下降,夏季植被覆盖变化不大,而秋季植被覆盖显著上升;和龙林业局、露水河林业局和长白山自然保护区的植被覆盖较好,而朝鲜一侧、泉阳林业局和长白林业局的植被覆盖较差;针叶林、阔叶林和针阔混交林的植被覆盖要高于荒草地、沼泽地、高山岳桦林和高山苔原,但后几种植被类型的植被覆盖增长趋势明显.

Vegetation Cover Changes in Changbai Mountain from 2000 to 2008

Based on the MODIS-NDVI 250 m resolution data,regional map and vegetation map,this paper analyzed the intra-annual and inter-annual variation of vegetation cover in Changbai Mountain by using the HANTS,imagery processing methods and statistical methods.Then further analyses were carried into different sub-regions and different vegetation types.The results show that:the vegetation variation generally trends to increase from 2000 to 2008;The increase was particularly obvious in Autumn.Otherwise,the vegetation variation was insignificant in Summer and the NDVI decreased slowly in Spring;the NDVI was much higher and increased more rapidly in the Helong Forestry Bureau,Lushuihe Forestry Bureau and Changbai Mountain National Reserve Bureau than Quanyang Forestry Bureau,Changbai Forestry Bureau and the nearby DPRK border area;though the NDVI of the grassland,marsh,betula ermanii forest and tundra were less than that of the coniferous forest,broadleaf forest,but the former grow faster than the later in vegetation cover.