摘要
世界屋脊生态地理区地形坡度分级数据集(ROTWSLC)是在ASTER GDEM 2数据基础上,对原数据进行预处理后,根据倾斜角度、百分比升高两种类型,计算坡度后再进行分级得到的。结果表明,在世界屋脊生态地理区,坡度在7º以上的区域约占总面积的72.02%;坡度在10%以上的区域约占到总面积的77.05%。该数据对于了解世界屋脊地理区的地形特征、进行生态、环境等的适宜性、脆弱性评价等具有重要意义。两种类型的数据均为栅格格式,每种包括475个1×1度的数据块。压缩后的数据量约为2.22GB。
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 7°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 1°× 1°.
作者
刘闯
石瑞香
吕婷婷
陈文波
王正兴
周翔
LIU Chuang;SHI Ruixiang;LV Tingting;CHEN Wenbo;WANG Zhengxing;ZHOU Xiang(Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China;Institute of Remote Sensing and Digital Earth,CAS,Beijing 100101,China;Keio Research Institute at SFC,Keio University,Fujisawa 2520882,Japan)
出处
《地理学报》
EI
CSCD
北大核心
2014年第S01期I0025-I0029,118-123,共11页
Acta Geographica Sinica
基金
中国科学院项目(2010):人地系统主题数据库建设与服务(INF0-115-C01-SDB3-02)。
