| MODIS LST产品青藏高原冻土图的精度验证 |
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| 引用本文： | 石亚亚,杨成松,车涛.MODIS LST产品青藏高原冻土图的精度验证[J].冰川冻土,2017,39(1):70-78. |
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| 作者姓名： | 石亚亚 杨成松 车涛 |
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| 作者单位： | 1. 中国科学院大学, 北京 100049;2. 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;3. 中国科学院 西北生态环境资源研究院 黑河遥感试验研究站, 甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金项目，国家科技部973项目 |
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| 摘 要： | 利用遥感数据可以大大提高青藏高原多年冻土分类和制图效率，并降低在环境恶劣、地形复杂的高寒区域所需的观测要求，从而避免人力和物力的巨大消耗。为了验证基于MODIS LST产品制作的青藏高原冻土图的精度，通过选取青藏高原东部的温泉区域和西北部的西昆仑山地区对1：400万青藏高原冻土图、1：300万青藏高原冻土图、基于MODIS LST产品青藏高原冻土图进行综合验证，以此评估基于MODIS LST产品的青藏高原冻土图精度。结果表明，利用遥感数据制作的青藏高原冻土图较已有冻土图能够更好反映多年冻土的空间分布特征，同时存在差异的地方大多是多年冻土与季节冻土过渡的边缘区域，形成原因主要是制图时间差异，此外还有坡度、坡向、植被、积雪等多重因素的综合影响。
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| 关 键 词： | 青藏高原 LST 冻土制图 精度验证 |
| 收稿时间： | 2016-08-16 |
| 修稿时间： | 2016-12-10 |
Accuracy verification of the Tibetan Plateau Permafrost Map based on MODIS LST product |
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| SHI Yaya,YANG Chengsong,CHE Tao.Accuracy verification of the Tibetan Plateau Permafrost Map based on MODIS LST product[J].Journal of Glaciology and Geocryology,2017,39(1):70-78. |
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| Authors: | SHI Yaya YANG Chengsong CHE Tao |
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| Institution: | 1. University of Chinese Academy of Sciences, Beijing 100049, China;2. State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;3. Heihe Remote Sensing Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | The use of remote sensing data can greatly improve the efficiency of the Tibetan Plateau permafrost classification and mapping,and less require the observation in cold terrain,which avoid the huge consumption of manpower and material resources.To assess the accuracy of the Permafrost Map based on MODIS LST products,in this study,the 1:4 000 000 Tibetan Plateau Permafrost Map,the 1∶3 000 000 Tibetan Plateau Permafrost Map and the Tibetan Plateau Permafrost Map based on MODIS LST product were validated comprehensively in the Wenquan area in the east of the plateau and the West Kunlun Mountains in the northwest of Tibetan Plateau.The results show that the Tibetan Plateau Permafrost Mapping based on MODIS LST product can better reflect the distribution and features of the permafrost.At the same time,there are many differences between the permafrost and seasonal frozen soil edge regions,mainly due to the mapping time difference,local factors,vegetation,snow cover and other multiple factors. |
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| Keywords: | Tibetan Plateau land surface temperature permafrost mapping accuracy verification |
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