2016年中巴经济走廊冻土分布数据集

中巴经济走廊穿越帕米尔高原和喀喇昆仑山系，在海拔4000米以上区域广泛发育和分布由多年冻土冻融作用导致的多种地质灾害。研究中巴经济走廊冻土分布和制图是解决走廊内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。研究区大致空间范围大致为23°47′ N至40°55′ N，60°20′ E至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），基于多年冻土顶板温度模型（TTOP）得到中巴经济走廊多年冻土分布数据（GeoTIFF格式，空间分辨率1km）。采用统计学中的确定系数对数据制备方法进行分析和评估，并采用现有文献资料对数据结果质量进行验证。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。

The China-Pakistan Economic Corridor traverses the Pamir Plateau and the Karakoram mountain range, where a wide range of geological disasters caused by permafrost thawing and freezing action are prevalent and distributed above 4000 meters in altitude. The study of the distribution and mapping of permafrost in the China-Pakistan Economic Corridor is fundamental for addressing practical engineering issues within the corridor and holds significant importance for water resource utilization, ecological security, and border defense construction. The study area covers an approximate spatial range of 23°47′ N to 40°55′ N and 60°20′ E to 80°16′ E, including the Kashi region and the Kizilsu Kirgiz Autonomous Prefecture in Xinjiang, China, as well as the entire territory of Pakistan. This paper collects MODIS land surface temperature data from 2016, the Chinese Pamir Plateau Glacier Inventory data from 2009, the Pakistani Glacier Inventory data from 2003-2004, and the 2008 World Soil Database (HWSDv1.2). The distribution data of permafrost in the China-Pakistan Economic Corridor were obtained based on the TTOP (Top-of-Permafrost Temperature Model) in GeoTIFF format with a spatial resolution of 1 km. The method of data preparation was analyzed and evaluated using the coefficient of determination from statistics, and the quality of the data results was verified with existing literature. This dataset can serve as a background survey for the permafrost changes in the China-Pakistan Economic Corridor and provide fundamental data support for research on frost heave and settlement during engineering construction in the region. The dataset can also be integrated with climate and hydrological data for comprehensive analysis, revealing the quantitative relationships between water, soil, air, and life in the Karakoram mountain area of the China-Pakistan corridor, and deepening the scientific understanding of ecological environment and sustainable development under the background of climate change in the region.