摘要
绿洲-荒漠生态系统是干旱/半干旱区特有景观,其水热碳通量的观测和研究对绿洲稳定与可持续发展具有重要的意义。本研究以黑河流域中游甘肃张掖绿洲-荒漠区域为研究对象,基于2012年在该区域开展的国际领先的通量观测矩阵试验,整理了观测试验获取的水热碳通量和气象要素数据,包括30 km×30 km和5.5 km×5.5 km两个嵌套的矩阵内21个观测点共22套涡动相关仪和21套自动气象站,4组大孔径闪烁仪和3组植物液流仪,观测项目包括生态系统净碳交换量、潜热通量、感热通量、空气温度、空气相对湿度、风速、风向、向下/上短波辐射、向下/上长波辐射、净辐射、大气压、降水、红外辐射温度、光合有效辐射、土壤温度、土壤水分、土壤热通量、平均土壤温度、树木蒸腾等。本数据集经过了严格的数据质量控制,可用于研究绿洲荒漠区域水热碳通量变化特征及影响机制,并为模式模拟或遥感估算结果等提供可靠的验证数据。
The oasis-desert ecosystem is a unique landscape in arid/semi-arid regions,and the observation and research of its water vapor,heat,and carbon fluxes are of great significance to the stability and sustainable development of oases.This study focuses on the oasis-desert area of Zhangye City,Gansu Province,in the middle reaches of the Heihe River Basin.Based on the state-of-art flux observation matrix experiment conducted in the region in 2012,we processed the water vapor-heat-carbon fluxes and meteorological data from the experiment in two nested matrices(30 km×30 km and 5.5 km×5.5 km).There are a total of 22 eddy covariance systems and 21 automatic weather stations within the 21 observation sites as well as 4 group large aperture scintillometer and 3 group thermal dissipation probe observations in the two nested matrices.The observation parameters encompass a wide range of elements,including ecosystem net carbon exchange,latent heat flux,sensible heat flux,air temperature,relative humidity,wind speed,wind direction,downward/upward short wave radiation,downward/upward long wave radiation,net radiation,atmospheric pressure,precipitation,infrared radiation temperature,photosynthetic effective radiation,soil temperature,soil moisture,soil heat flux and average soil temperature,tree transpiration,etc.This meticulously processed dataset can be used to study the characteristics and impact mechanisms of water vapor,heat,and carbon changes in oasis-desert areas.Moreover,it can provide a strong data foundation for model simulation or remote sensing estimation results.
作者
徐自为
刘绍民
李新
徐同仁
朱忠礼
XU Ziwei;LIU Shaomin;LI Xin;XU Tongren;ZHU Zhongli(State Key Laboratory of Earth Surface Processes and Resource Ecology,Faculty of Geographical Science,Beijing Normal University,Beijing 100875,P.R.China;National Tibetan Plateau Data Center(TPDC),State Key Laboratory of Tibetan Plateau Earth System,Environment and Resources(TPESER),Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,P.R.China)
基金
国家自然科学基金(91125002)。
关键词
涡动相关仪
自动气象站
大孔径闪烁仪
植物液流仪
黑河流域
绿洲荒漠区域
eddy covariance system
automatic weather station
large aperture scintillometer
thermal dissipation probe
Heihe River Basin
oasis-desert area
