青藏公路沿线多年冻土活动层厚度观测数据（2004-2009）

本数据集包含从2004年到2009年青藏公路沿线6个位置的多年冻土活动层厚度和地表景观观测数据。
数据来源于科技基础性工作专项“青藏高原多年冻土本地调查”，观测方法为土壤温度法，通过布设活动层测温探头，进行多年冻土区活动层厚度的年际变化观测，并对观测数据进行计算整编。

This dataset contains observational data on permafrost active layer thickness and surface landscape at six sites along the Qinghai-Tibet Highway from 2004 to 2009. The data were derived from the Special Project for Basic Scientific and Technological Work titled "Local Investigation of Permafrost on the Qinghai-Tibet Plateau". The observation method employed the soil temperature technique: temperature probes were installed in the active layer to monitor interannual variations in permafrost active layer thickness, and the collected observational data were subsequently calculated and compiled.