TY  - Data
T1  - 30m slope and aspect data of the permafrost region in Northeast China (2000)
A1  - JIN Huijun
A1  - Tang Jianjun
A1  - Wang Wenhui
A1  - Jin Xiaoying
A1  - Li Shanzhen
A1  - Huang Shuai
A1  - Chen Dun
A1  - WANG Hongwei
A1  - Yangsui Bridge
A1  - Li Zuwang
A1  - Soaring Swallows
A1  - Cheng Yaohui
A1  - Li Jingtao
A1  - Zhang Ze
A1  - Wang Lifeng
A1  - Zhang Hu
A1  - Liu Mengxin
A1  - Zhang Shengrong
A1  - Yang Xue
A1  - Liu Zirui
A1  - Yue Ziying
A1  - Wu Haibin
A1  - Xing Luning
A1  - Chen Siyu
A1  - Xu Jingyan
A1  - He Zhengyun
A1  - Mi Hongqi
A1  - Peng Wenhao
A1  - Liang Junhe
A1  - Shi Yanling
A1  - Zhou Zhiyi
DO  - 10.12072/ncdc.nieer.db7258.2026
PY  - 2026
DA  - 2026-04-03
PB  - National Cryosphere Desert Data Center
AB  - This data resource includes slope and aspect terrain factor data extracted based on a 30 meter resolution digital elevation model, covering the main engineering corridors and their surrounding areas in the permafrost region of Northeast China. The dataset focuses on the control effect of terrain morphology in permafrost regions on surface processes and engineering environmental stability, providing basic terrain constraint information for identifying freeze-thaw disasters and monitoring infrastructure in cold regions.  The slope data reveals significant topographic spatial heterogeneity in the study area, presenting an overall pattern of concentrated mountainous areas and open plains. The mountainous areas of Daxing'anling and Xiaoxing'anling are mainly characterized by medium to high slope terrain, which is an important geomorphic unit for the development of permafrost and freeze-thaw disasters over the years; The terrain in the western plateau and lake basin plain areas is gentle, with slopes mostly within the low range. This data can finely characterize the geometric shape and micro topography of slopes along the engineering route, providing key terrain parameters for identifying potential slope erosion, thermal collapse, and gravity deformation sensitive areas.  The slope orientation data reflects a complex slope orientation pattern at a spatial scale of 30 meters, which can characterize the typical slope radiation differential environment in permafrost regions. There are significant differences in the solar radiation reception conditions corresponding to different slope orientations, which in turn affect the background of surface heat exchange. This data helps to describe the characteristics of thermal environment differentiation on the uphill surface at the regional scale, providing important auxiliary information for analyzing the differences in frozen soil stability on both sides of the project and the spatial distribution of disasters.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/891d3848-10f5-4471-8fc4-88cd32d4c929
ER  -