JapanFlux2024 CN-HaM Qinghai Flux Research Site

In this study, we focused on the CO2 exchange during the growing season between the atmosphere and an alpine meadow ecosystem on the Qinghai-Tibetan Plateau. We determined the diurnal and seasonal changes in CO2 flux and their dependence on environmental factors, especially soil water content and soil temperature.
The research station is located in northeast Tibet, in a large valley oriented northwest-southeast and surrounded by the Qilian Mountains. The average altitude of the mountains is 4000 m and of the valley is 2900-3500 m. The Datong River passes to the south. The landscape is characterized by large mountain ranges with steep valleys and gorges interspersed with relatively level and wide inter-mountain grassland basins.
The climate at Haibei Station is characterized by low temperature and limited precipitation. The soil is a clay loam; its average thickness is 0.65 m. CO2 and H2O fluxes were measured by the eddy covariance method

本研究聚焦青藏高原高寒草甸生态系统生长季内大气与该生态系统间的二氧化碳（CO₂）交换过程，明确了二氧化碳通量的日变化与季节变化特征，及其与环境因子的依赖关系，尤以土壤含水量与土壤温度为关键调控因子。

研究站点位于藏东北区域，地处一条走向为西北-东南的大型河谷之中，四周被祁连山环绕。山地平均海拔达4000米，河谷区域海拔介于2900-3500米之间，大通河自河谷南侧流过。该区域景观以大型山脉为主体，山谷与峡谷陡峭，其间点缀有相对平缓开阔的山间草原盆地。

海北站的气候以低温少雨为主要特征。该区域土壤为黏壤土，平均厚度为0.65米。本研究采用涡度相关法（eddy covariance method）测定二氧化碳与水（H₂O）通量。

搜集汇总

背景与挑战

背景概述

该数据集研究了青藏高原高寒草甸生态系统在生长季节的CO2交换，分析了昼夜和季节变化及其对环境因素的依赖。数据覆盖2001年至2014年，由多个研究机构共同贡献，以CC BY 4.0许可证发布。