雅鲁藏布大峡谷植被垂直分布格局研究--以多雄河及邻近区域为例

Study on the Vertical Distribution Pattern of Vegetation in Yarlung Zangbo Grand Canyon--Take the Duoxiong River and its Adjacent Areas as an Example

通过对多雄河及邻近区域的现场调查,结合基于3S技术的遥感解译技术,以多雄河及邻近区域为例,对雅鲁藏布大峡谷植被垂直分布格局进行了初步研究,并对白马西路河3条支流(多雄河、比西日河以及丹戈着河)的植被类型相似性进行了分析。结果表明:多雄河及邻近区域的植被从江面往上依次为热带季雨林带,亚高山常绿、半常绿阔叶林带,亚高山针叶林带,高山灌草丛带,流石滩植被带以及永久冰雪带共6个垂直分布带;比西日河与多雄河的植被类型相似性比丹戈着河与多雄河的植被类型相似性更高。

A preliminary study on the vertical distribution pattern of vegetation in Yarlung Zangbo Grand Canyon Basin was carried out based on the field survey of the Duoxiong River and its adjacent areas and 3S remote sens-ing interpretation technology,and the habitat similarity of three tributaries(the Duoxiong River,the Bixiri River and the Dan’gezhuo River)of the Baimaxilu River was analyzed.The results showed that the vegetation in the Duoxiong River and its adjacent areas can be devided into six vertical distribution in sequence from the river sur-face upwards:tropical monsoon rainforest zone,subalpine evergreen and semi-evergreen broadleaved forest zone,subalpine coniferous forest zone,alpine shrub zone,and flowstone beach vegetation zone and permanent ice and snow zone;the habitat similarity between the Bixiri River and the Duoxiong River is higher than that of the Dan’gezhuo River and the Duoxiong River.