| 祁连山区多年冻土空间分布模拟 |
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| 引用本文： | 彭晨阳,盛煜,吴吉春,曹伟,何彬彬.祁连山区多年冻土空间分布模拟[J].冰川冻土,2021,43(1):158-169. |
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| 作者姓名： | 彭晨阳 盛煜 吴吉春 曹伟 何彬彬 |
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| 作者单位： | 1.中国科学院 西北生态环境资源研究院 冻土工程国家重点实验室，甘肃 兰州 730000;2.中国科学院大学，北京 100049 |
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| 基金项目： | 第二次青藏高原综合科学考察研究项目（Ⅳ15-T01-2018-03/08-JH）;国家自然科学基金项目(41971093) |
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| 摘 要： | 祁连山区位于青藏高原东北边缘，是亚洲水塔重要的组成部分，多年冻土的变化对生态系统和水资源平衡有着重要影响。基于青藏高原第二次综合科学考察、道路勘察钻孔点以及前人所获得的多年冻土下界资料，回归得出祁连山区多年冻土下界统计模型，借助ArcGIS平台在DEM数据的支持下，模拟出祁连山区多年冻土空间分布图。结果表明：祁连山区多年冻土分布的下界具有良好的地带性规律，表现为随经纬度增加而降低的规律；祁连山区多年冻土在空间分布上呈现出以哈拉湖为中心向四周扩散的分布格局；祁连山区总面积约为16.90×104 km2，其中多年冻土面积约为8.03×104 km2，占总面积约47.51%。多年冻土区与季节冻土区之间存在着有不连续多年冻土分布的过渡区，过渡区面积约1.43×104 km2，占总面积约8.46%。
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| 关 键 词： | 高海拔多年冻土 祁连山区 多年冻土下界 空间分布模拟 地带性规律 |
| 收稿时间： | 2019-10-14 |
| 修稿时间： | 2020-07-23 |
Simulation of the permafrost distribution in the Qilian Mountains |
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| PENG Chenyang,SHENG Yu,WU Jichun,CAO Wei,HE Binbin.Simulation of the permafrost distribution in the Qilian Mountains[J].Journal of Glaciology and Geocryology,2021,43(1):158-169. |
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| Authors: | PENG Chenyang SHENG Yu WU Jichun CAO Wei HE Binbin |
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| Institution: | 1.State Key Laboratory of Frozen Soil Engineering，Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China;2.University of Chinese Academy of Sciences，Beijing 100049，China |
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| Abstract: | The Qilian Mountains，located on the northeast edge of the Qinghai-Tibet Plateau，is an important part of the Asian water tower. Changing in permafrost can exert great impacts on the ecosystem and regional water balance. Based on the data from the Second Tibetan Plateau Scientific Expedition and Research and the borehole data of road survey along the elevation of lower limit of permafrost，we employed the statistical model of the permafrost elevation using statistical regression. The spatial distribution map of permafrost in the Qilian Mountains was worked out by using the ArcGIS platform and DEM data. The results show that the lower limit elevation of permafrost in the Qilian Mountains has significant zonality，with the lower limit decreases with latitude or longitude. The permafrost in the Qilian Mountains shows a distribution pattern centered at Hala Lake. The total area of the Qilian Mountains is about 16.90×104 km2，of which the permafrost area is about 8.03×104 km2，accounting for about 47.51%. There is a transition zone of island permafrost between the permafrost area and the seasonal frozen soil area，covering an area of about 1.43×104 km2，accounting for 8.46% of the total area. |
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| Keywords: | alpine permafrost Qilian Mountains lower limit of permafrost simulation of spatial distribution zonality |
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