2003-2010年海北高寒灌丛碳水热通量观测数据集

An observation dataset of carbon,water and heat fluxes over an alpine shrubland in Haibei(2003–2010)

青藏高原是全球气候变化的热点区域和敏感区域,高寒灌丛是重要植被类型,其碳水热交换的时空格局及生态过程是科学认知青藏高原生态功能的关键之一。青海海北高寒草地生态系统国家野外科学观测研究站(简称海北站)自2003年利用涡度相关技术开展高寒金露梅(Potentilla fruticosa)灌丛生态系统碳水热交换的科学观测,已经连续积累了17年的通量数据。为了推动青藏高原乃至全球高寒生态系统碳水热格局等相关研究的发展,海北站公开发表2003–2010年高寒灌丛相关常规气象数据及碳水热通量。本数据集包含空气温度、空气相对湿度、水汽压、风速、风向、土壤温度、土壤水分、总辐射、净辐射、光合有效辐射和降水的常规气象数据子集和净生态系统CO2交换通量、生态系统CO2呼吸通量、总生态系统CO2交换通量、潜热通量、显热通量的碳水热通量数据子集,形成了半小时、日、月和年尺度数据产品,可为高寒灌丛生态系统碳水热时空动态的科学认知、遥感反演、模型验证提供地面观测数据支撑。

Alpine shrublands are an important vegetation on the Qinghai-Tibetan Plateau,a hotspot and sensitive area of global climate change.The spatial-temporal pattern and ecological process of their carbon,water,and heat fluxes are one of the most important keys to exploring the ecological function of the Plateau.Haibei National Field Research Station for Alpine Grassland(Haibei Station)is a field station of ChinaFLUX,which has used the eddy covariance technique to monitor the carbon,water,and heat fluxes over an alpine Potentilla fruticosa shrubland for 17 years since 2003.In order to promote the development of carbon,water,and heat fluxes and other related researches in the Qinghai-Tibetan Plateau and even in the global alpine ecosystems,we plan to publish the routine meteorological data of carbon,water and heat fluxes over an alpine shrubland observed from 2003 to 2010.This dataset includes routine meteorological data subset(air temperature,air relative humidity,water vapor pressure,wind speed,wind direction,soil temperature,soil moisture,total radiation,net radiation,photosynthetically active radiation,and precipitation)and carbon,water,and heat fluxes data subset(net ecosystem CO2 exchange,ecosystem CO2 respiration,gross ecosystem CO2 exchange,latent heat flux,and sensible heat flux)on a half-hour,day,month,and year scale.This dataset provides field observational data support for scientific knowledge,remote sensing retrieval,and model validation in exploring spatiotemporal patterns of carbon,water,and heat exchanges in alpine shrubland ecosystems.