地理学报 ›› 2014, Vol. 69 ›› Issue (s1): 20-24.doi: 10.11821/dlxb2014S002

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世界屋脊生态地理区山地高度分类数据集内容与成果

刘闯1, 石瑞香1, 吕婷婷2, 陈文波3, 周翔2, 王正兴1   

  1. 1. 中国科学院地理科学与资源研究所, 北京 100101;
    2. 中国科学院遥感与数字地球研究所, 北京 100101;
    3. 日本庆应义塾大学SFC研究所, 藤泽 2520882
  • 收稿日期:2014-03-17 修回日期:2014-06-20 出版日期:2014-12-26 发布日期:2020-04-07

Elevation cluster dataset covering the eco-region of the Roof of the World

LIU Chuang1, SHI Ruixiang1, LV Tingting2, CHEN Wenbo3, WANG Zhengxing1, ZHOU Xiang2   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;
    3. Keio Research Institute at SFC, Keio University, Fujisawa 2520882, Japan
  • Received:2014-03-17 Revised:2014-06-20 Published:2014-12-26 Online:2020-04-07

摘要: 世界屋脊生态地理区山地高度分类数据集 (ROTWEVC) 是在ASTER GDEM 2 数据基础上,对该区域内原数据中存在的数据异常、数据遗漏进行了修正和数据融合,并将该区域海拔高度依据500 m间隔划分为17种类型,对各个类型进行了面积统计。其结果,在世界屋脊生态地理区以4500~5000 m高度地域面积最大,达910860 km2,占区域总面积的22.77%;而高于海拔4000 m的地域面积达2150236 km2,占区域总面积的53.75%。海拔高度在4000 m以下的地域主要分布在高原面的4周,单位距离内的高度变化非常明显,呈现出低海拔向高海拔过渡的特点。该数据是栅格格式,包含475个1×1o的数据块。总数据量约249 MB,压缩后194 MB。

关键词: 世界屋脊, 青藏高原, 兴都库什喜马拉雅, 生态地理区, 海拔高度, 分类

Abstract: The land slope cluster data of the eco-region of the Roof of the World (ROTWSLC) is the basic for ecosystem analysis of the region. It was derived from ASTER GDEM 2 with the cluster models in slope degree and slope percentage. 7 clusters of the land slope according to the degree and 6 clusters according the percentage were identified. The statistics of each cluster had been calculated. The data indicates that the total area of land which slope was equal and higher than 7º was 72.02% of the region and the area of land which slope was equal and higher than 10% was 77.05% of the region. The data in raster were break down into 475 tiles of each of two groups of clusters by 1º x 1º.

Key words: land slope, cluster, Qinghai-Tibet Plateau, Roof of the World, eco-region