2014–2018 年那曲高寒草甸碳水热通量观测数据集

高寒草甸是青藏高原高寒草地的重要组成部分, 在高寒草甸生态系统开展长期碳通量监测对于评估和预测青藏高原草地生态系统碳源汇功能具有重要意义。本数据集为那曲高寒草甸生态系统2014–2018年通量观测数据, 数据采集地位于青藏高原北部那曲市的那曲高寒草地生态系统野外科学观测研究站。基于开路式涡度相关系统, 观测了高寒草甸生态系统二氧化碳通量以及水热通量。本数据集包括净生态系统CO2交换量、生态系统呼吸、总初级生产力、蒸散和显热通量等碳水热通量数据和空气温度、空气相对湿度、土壤温度、土壤湿度、光合有效辐射和降水的常规气象数据。本数据集采用ChinaFLUX推荐的数据质量控制、缺失数据插补、CO2通量数据拆分等数据处理方法, 形成了30分钟、日、月和年尺度数据产品, 可为科学评估高寒草甸生态系统功能提供可靠的数据支撑和理论依据。

Alpine meadows are an important component of the alpine grasslands on the Qinghai-Tibet Plateau. Long-term carbon flux monitoring in alpine meadow ecosystems is of great significance for evaluating and predicting the carbon source-sink function of grassland ecosystems on the Qinghai-Tibet Plateau. This dataset contains flux observation data of the Nagqu alpine meadow ecosystem from 2014 to 2018, which was collected at the Nagqu Alpine Grassland Ecosystem Field Scientific Observation and Research Station located in Nagqu City, northern Qinghai-Tibet Plateau. Based on the open-path eddy covariance system, carbon dioxide flux and water and heat fluxes of the alpine meadow ecosystem were observed. This dataset includes water, carbon and heat flux data such as Net Ecosystem Exchange of CO₂ (NEE), Ecosystem Respiration (Re), Gross Primary Productivity (GPP), Evapotranspiration (ET) and Sensible Heat Flux, as well as conventional meteorological data including air temperature, air relative humidity, soil temperature, soil moisture, Photosynthetically Active Radiation (PAR) and precipitation. This dataset adopts data processing methods recommended by ChinaFLUX, including data quality control, missing data imputation and CO₂ flux data partitioning, to generate data products at 30-minute, daily, monthly and annual scales. It can provide reliable data support and theoretical basis for the scientific evaluation of alpine meadow ecosystem functions.

搜集汇总

背景与挑战

背景概述

该数据集为2014–2018年青藏高原那曲高寒草甸生态系统的长期观测数据，采用涡度相关法监测了碳水热通量（如CO2交换、蒸散）和常规气象变量，数据经过质量控制并形成多时间尺度产品，旨在为评估高寒草地生态系统碳源汇功能提供科学依据。