2017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 2017

作　　者：艾鸣浩 张耀南[1,2] 康建芳 冯克庭 田德宇 Ai Minghao;Zhang Yaonan;Kang Janfang;Feng keting;Tian Deyu(Scientific Big Data Center,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,P.R.China;Service Center,National Special Environment and Function of Observation and Research Stations Shared Service Platform,Lanzhou 730000,P.R.China)

机构地区：[1]中国科学院西北生态环境研究院,科学大数据中心,兰州730070 [2]国家特殊环境、特殊功能观测研究台站共享服务平台,平台服务中心,兰州730070

出　　处：《中国科学数据（中英文网络版）》2019年第3期4-13,共10页China Scientific Data

基　　金：国家科技基础条件平台(Y719H71006);中国科学院信息化专项(XXH13506)

摘　　要：中巴经济走廊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。研究区大致空间范围大致为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2013–2017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1 km)。采用统计学中的决定系数对数据制备方法进行分析和评估,并通过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,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。The China-Pakistan Economic Corridor,an iconic project of the Belt and Road Initiative,matters greatly to the economic 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 defense.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 from 2013 to 2017,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.

关 键 词：中巴经济走廊 多年冻土分布 TTOP模型 MODIS地表温度 

分 类 号：P642.14[天文地球—工程地质学]