青藏高原典型冰川融水径流汞数据集（2016-2020）

青藏高原冰川退缩导致冰川存储的历史时期沉降汞再次释放，随径流进入下游生态系统可能引发潜在环境风险。加强冰川融水径流汞含量和输移研究，有助于理解冰冻圈变化的环境影响。基于第二次青藏高原综合科学考察研究等项目支持，研究团队获取了祁连山老虎沟12号冰川（LHG）、纳木错流域扎当冰川（ZD）、拉萨河谷廓琼岗日冰川（KQGR）、枪勇冰川（QY）、珠峰绒布冰川（RB）和贡嘎山海螺沟冰川（HLG）融水径流汞含量数据。
在2019-2020年对RB和HLG径流进行了一年的长期采样观测， 2016年在ZD，2019年在LHG和QY，2020年在KQGR冰川径流进行了消融盛期的强化采样观测。获取了这六条冰川融水径流中不同汞形态（包括总汞、溶解态汞、颗粒态汞）和悬浮颗粒物含量数据。总汞和溶解态汞含量依照美国EPA（Environmental Protection Agency）推荐的方法，采用BrCl氧化-SnCl2还原-金管富集-冷原子荧光（CVAFS）结合法进行分析测试（EPA, 2002），使用Tekran 2600测汞仪测定；颗粒态汞是总汞含量与溶解态汞含量的差值（颗粒态汞=总汞-溶解态汞）。悬浮颗粒物含量采用称重法，使用岛津AP124X天平称量。
本数据集包括青藏高原多条冰川融水径流汞（总汞、溶解态汞、颗粒态汞）和总悬浮颗粒物含量的详细数据，为揭示青藏高原冰川消融的环境影响提供了基础数据。

Glacier retreat on the Qinghai-Tibet Plateau leads to the re-release of historically deposited mercury stored in glaciers. The subsequent transport of this mercury via meltwater runoff into downstream ecosystems may pose potential environmental risks. Strengthening research on mercury concentrations and transport in glacial meltwater runoff helps to understand the environmental impacts of cryosphere changes. Supported by projects such as the Second Tibetan Plateau Scientific Expedition and Research (STEP) program, the research team obtained mercury concentration data from meltwater runoff of six glaciers: Laohugou Glacier No.12 (LHG) in the Qilian Mountains, Zadang Glacier (ZD) in the Nam Co Basin, Kuqionggangri Glacier (KQGR) in the Lhasa River Valley, Qiangyong Glacier (QY), Rongbuk Glacier (RB) on Mount Qomolangma, and Hailuogou Glacier (HLG) in the Gongga Mountains.

One-year long-term sampling and observation were conducted for runoff from RB and HLG during 2019–2020. Intensive sampling and observation during the ablation peak period were carried out for ZD in 2016, LHG and QY in 2019, and KQGR in 2020. Data on three mercury species (total mercury, dissolved mercury, particulate mercury) and suspended particulate matter concentrations in the meltwater runoff of these six glaciers were collected. Concentrations of total mercury and dissolved mercury were analyzed using the BrCl oxidation-SnCl2 reduction-gold tube enrichment-cold vapor atomic fluorescence spectrometry (CVAFS) method recommended by the US Environmental Protection Agency (EPA, 2002), measured with a Tekran 2600 mercury analyzer. Particulate mercury was calculated as the difference between total mercury and dissolved mercury concentrations (particulate mercury = total mercury - dissolved mercury). Total suspended solids concentrations were determined via gravimetric analysis using a Shimadzu AP124X balance.

This dataset includes detailed data on mercury (total mercury, dissolved mercury, particulate mercury) and total suspended solids concentrations in meltwater runoff from multiple glaciers on the Qinghai-Tibet Plateau, providing foundational data for uncovering the environmental impacts of glacier ablation on the Qinghai-Tibet Plateau.

搜集汇总

背景与挑战

背景概述

该数据集包含了2016年至2020年期间青藏高原六条典型冰川（如祁连山老虎沟12号冰川、珠峰绒布冰川等）融水径流中汞含量和悬浮颗粒物的详细观测数据，涵盖总汞、溶解态汞和颗粒态汞等多种形态。数据通过长期和强化采样获取，采用标准分析方法（如EPA推荐的CVAFS技术），旨在评估冰川消融导致的汞释放对环境的影响。数据集以excel格式存储，开放共享，为研究冰冻圈变化的环境风险提供了基础科学数据。