灌丛沙丘AMS 14C年代学数据集（近700年来）

通过在塔克拉玛干沙漠塔中地区、阿拉善高原额济纳旗、坝上高原化德县选取代表区域整体情况的典型灌丛沙丘，自沙丘顶部往下开挖垂直剖面直至沙丘底部，按照1-2 cm的深度间隔，采集沙丘风成沉积样品，利用加速器质谱方法并经树轮校正，从而获得样品的日历年。

Typical shrub-covered dunes representative of the overall regional conditions were selected at three locations: the Tazhong area of the Taklimakan Desert, Ejina Banner of the Alxa Plateau, and Huade County of the Bashang Plateau. Vertical profiles were excavated downward from the dune crests to their bases, and eolian sediment samples were collected at 1–2 cm depth intervals along the profiles. The calendar years of the samples were obtained using accelerator mass spectrometry (AMS) and calibrated using tree-ring chronologies.

搜集汇总

背景与挑战

背景概述

该数据集提供了中国北方沙漠化区域内（包括塔克拉玛干沙漠、阿拉善高原和坝上高原）灌丛沙丘近700年来的AMS 14C年代学数据，通过采集风成沉积样品并利用加速器质谱方法结合树轮校正获得。其特点在于聚焦于灌丛沙丘的沉积年代测定，为自然地理学领域的风尘循环和环境效应研究提供关键时间序列数据支撑。