SAFARI 2000 BVOC MEASUREMENTS AT SKUKUZA AND MAUN FLUX TOWERS, WET SEASON 2001

Biogenic volatile organic compound (BVOC) emissions were measured in a Colophospermum mopane woodland near Maun, Botswana, and in a Combretum-Acacia savanna in Kruger National Park, 13 km from Skukuza, Republic of South Africa (RSA) during the 2001 wet season campaign of SAFARI 2000. In addition, relaxed eddy accumulation (REA) measurements of BVOC fluxes were made on flux towers at these sites, where net CO2 emissions were also measured simultaneously. The investigators also took advantage of a wide variety of easily accessible plant specimens growing in a nursery in the Kruger National Park to screen an additional 95 species of African plants for their ability to emit isoprene, providing species level isoprene emission information which can be used to further initial estimates of isoprene emissions from additional ecosystems of southern Africa. A leaf cuvette technique was used to determine the emission capacities of the nursery plants and the temperature and light dependence of the emissions. This research on BVOC emissions contributes to the development of a regional scale BVOC emissions model for southern Africa.Data files contain records of BVOC measurements from the Maun and Skukuza flux tower sites; species level isoprene emissions and physiological data; and site meteorological data. The data files are stored as ASCII text files, in comma-delimited format, with column headers.More information can be found in the companion file.本数据集涵盖2001年SAFARI 2000项目湿季科考活动期间的观测数据：研究分别在博茨瓦纳马翁附近的莫帕尼豆（Colophospermum mopane）林地，以及南非共和国（RSA）克鲁格国家公园内距斯库库扎13公里处的诃子-金合欢稀树草原，开展了生物源挥发性有机化合物（Biogenic Volatile Organic Compound, BVOC）排放的原位观测。此外，上述两个站点的通量塔同步采用松弛涡度累积法（Relaxed Eddy Accumulation, REA）测定BVOC通量，并同步记录了二氧化碳净排放通量。研究团队还依托克鲁格国家公园苗圃中易于获取的多种植物标本，对额外95种非洲植物的异戊二烯排放能力进行了筛选测试，获取了物种级别的异戊二烯排放数据，可用于进一步估算南部非洲其他生态系统的异戊二烯初始排放量。研究采用叶室技术测定了苗圃植物的排放潜能，以及排放过程对温度与光照的响应规律。本项BVOC排放相关研究可为南部非洲区域尺度BVOC排放模型的构建提供支撑。数据集包含马翁与斯库库扎两个通量塔站点的BVOC观测记录、物种级异戊二烯排放与生理数据，以及站点气象数据。所有数据文件均采用逗号分隔格式的ASCII文本文件存储，并附带列标题。更多详细信息可参阅配套说明文件。