2003-2008年西双版纳热带雨林土壤碳通量数据集

土壤碳通量指土壤通过呼吸作用向大气层释放CO2的过程，是全球变化背景下，陆地生态系统碳循环的重点研究内容之一。因土壤为陆地生态系统最大的碳库，土壤碳库的微小变化对大气的CO2浓度影响显著。为此，土壤呼吸在全球碳循环研究过程中受到了广泛的重视。中国通量观测研究网络（China FLUX）在利用涡度相关技术开展碳通量观测研究的同时,也利用箱式法对地表CO2通量进行了长期观测研究。热带季节雨林是重要的碳汇，该生态系统在全球碳收支和气候变化调节中具有重要作用。故本数据集整理了2003年1月到2008年8月利用静态箱-气相色谱法得到的西双版纳热带雨林土壤CO2排放通量数据和常规气象数据，包括地表CO2通量、压强、大气温度、土壤温度(5厘米)和土壤含水量（5厘米）等观测指标，形成了日、月和年尺度3类文件，希望能为全球碳平衡估算和碳循环过程提供最基本的数据。Soil carbon flux refers to the process by which soil releases CO₂ into the atmosphere through respiration, and is one of the key research topics in the terrestrial ecosystem carbon cycle under the context of global change. As soil is the largest carbon pool in terrestrial ecosystems, even minor changes in the soil carbon pool exert a significant impact on atmospheric CO₂ concentrations. Therefore, soil respiration has received extensive attention in global carbon cycle research. While conducting carbon flux observation studies using the eddy covariance technique, the China FLUX network also carried out long-term observations of surface CO₂ flux via the chamber method. Tropical seasonal rainforests are important carbon sinks, and this ecosystem plays a critical role in global carbon budgets and climate change regulation. Accordingly, this dataset compiles soil CO₂ emission flux data and routine meteorological data of the Xishuangbanna tropical rainforest obtained from January 2003 to August 2008 using the static chamber-gas chromatography method. The observed indicators include surface CO₂ flux, atmospheric pressure, air temperature, soil temperature at 5 cm depth, and soil moisture content at 5 cm depth. Three types of files at daily, monthly and annual scales are generated, aiming to provide fundamental data for global carbon balance estimation and carbon cycle research.

搜集汇总

背景与挑战

背景概述

该数据集整理了2003年至2008年期间，在西双版纳热带雨林使用静态箱-气相色谱法观测的土壤碳通量数据，包括地表CO2通量、压强、大气温度、土壤温度和土壤含水量等关键指标，并提供了日、月和年三个时间尺度的文件。数据集专注于热带季节雨林生态系统的碳循环研究，旨在为全球碳平衡估算和气候变化调节提供基础数据支持，具有长期观测和多尺度分析的特点。