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2016年中巴经济走廊冻土分布数据集
A dataset of permafrost distribution along the China-Pakistan Economic Corridor in 2016
: 2018 - 08 - 15
: 2018 - 08 - 17
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摘要&关键词
摘要:中巴经济走廊是国家“一带一路”倡议下的标志性项目,对中国和巴基斯坦以及周边国际的经济文化交流有着重要意义。其穿越帕米尔高原和喀喇昆仑山系,在海拔4000 m以上区域广泛发育和分布着由多年冻土冻融作用导致的多种地质灾害。研究中巴经济走廊的冻土分布和制图是解决其实际工程问题的基础,也对水资源利用、生态安全和边防建设有重要意义。研究区空间范围大致为23°47′N–40°55′N,60°20′E–80°16′E,包括中国新疆喀什地区、克孜勒苏柯尔克孜自治州以及巴基斯坦全境。本文收集了2016年MODIS地表温度数据,2009年中国帕米尔高原冰川编目数据,2003–2004年巴基斯坦冰川编目数据和2008年世界土壤数据库(HWSDv1.2),基于TTOP模型得到中巴经济走廊多年冻土分布数据(GeoTIFF格式,空间分辨率1 km),并采用统计学手段和现有文献资料对数据质量进行分析和评估。本数据集可作为中巴经济走廊多年冻土变化的本底调查资料,为该区域工程建设中冻胀融沉研究提供基础数据支撑。本数据集也可与气候、水文等数据综合分析,揭示中巴经济走廊喀喇昆仑山区水–土–气–生之间定量联系,深化对该区域气候变化背景下生态环境和可持续发展的科学认识。
关键词:中巴经济走廊;多年冻土分布;TTOP模型;MODIS地表温度
Abstract & Keywords
Abstract: The China-Pakistan Economic Corridor, an iconic project of the Belt and road Initiative, matters greatly to the economical and cultural exchanges of China-Pakistan region. Passing through the Pamirs and Karakoram Mountain System, the Corridor has been frequented by various types of geological disasters at altitudes above 4,000 meters caused by freeze-thaw cycles in permafrost. Studies on permafrost distribution and mapping constitute the basis for solving practical engineering problems along the Corridor, and they are of great importance to water resource utilization, ecological security and border defence. The study has a spatial coverage of approximately 23°47′ N ~ 40°55′ N, 60°20′ E ~ 80°16′ E, including Kashgar in Xinjiang, Kizilsu Kirghiz Autonomous Prefecture and the whole Pakistan. The data of permafrost distribution along the Corridor (format: Tiff; spatial resolution: 1 km) were acquired on the basis of TTOP Model, including MODIS surface temperature data in 2016, glacial cataloging data for the Pamirs of China in 2009, glacier cataloging for Pakistan in 2003-2004 and World Soil Database for 2008 (HWSD v1.2). The data were then analyzed through statistical methods and validated against existed literature. This dataset can serve as fundamental survey material for studying permafrost changes along the Corridor, providing basic data support for researches on frost heaving and thawing during the construction of the region. Besides, the dataset could be analyzed together with climate, hydrological, and other data to reveal the quantitative relation among the hydrology-soil-atmosphere-ecology of the Corridor, thereby deepening scientific understanding of the region’s ecological environment and sustainable development against the background of climate changes.
Keywords: China-Pakistan Economic Corridor; permafrost distribution; TTOP Model; MODIS land surface temperature
稿件与作者信息
艾鸣浩
Ai Minghao
aimh@lzb.ac.cn
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中国科学数据
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