Bubble emissions from thermokarst lakes in the Qinghai–Xizang Plateau

It is important to understand the role of Qinghai–Xizang Plateau thermokarst lakes in the global atmospheric methane (CH4) and carbon dioxide (CO2) budget. This study investigated the gas components and isotopic characteristics of bubble gas collected from six thermokarst lakes. The major gas component of the bubbles varied greatly among lakes and bubble sources. Nitrogen (N2), oxygen (O2) and carbon dioxide (CO2) were the predominant...