Bulls, New Zealand, FACE Yield Data

FACE stands for Free Air CO2 Enrichment. FACE technology is capable of providing a means by which the environment around growing plants may be modified to realistically simulate future concentrations of atmospheric carbon dioxide (CO2). Unlike growth chambers and greenhouses, no containment is required with FACE designs. Previously difficult-to-study natural conditions such as temperature, precipitation, pollination, wind, humidity, and sunlight are now possible. In addition, there are, in theory, no plant size or growth problems caused by the constraint of enclosures (although the system must be sized, or expandable, to accommodate the anticipated future size of the plants during the lifetime of the experiment). Therefore, long-term studies may be conducted. FACE field data represent plant and ecosystem responses to concentrations of atmospheric CO2 in a natural setting possible during the next century. More infomation can be found at: http://cdiac.ess-dive.lbl.gov/ftp/FACE/nzdata/yield.txtFACE即自由空气二氧化碳富集技术（Free Air CO2 Enrichment）。该技术可通过调控植物生长周边的自然环境，逼真模拟未来大气二氧化碳（CO2）浓度水平。与传统生长箱和温室不同，FACE系统无需构建密闭空间。此前难以开展原位研究的自然环境因子，如温度、降水、授粉、风速、湿度与光照等，如今均可依托该系统实现精准模拟与观测。此外，理论上该技术不会出现因密闭空间限制导致的植株尺寸受限或生长异常问题（尽管需根据实验周期内植物预期的生长规模，对系统进行合理选型或预留扩展空间，以适配实验全程中植物的生长体量）。因此，FACE系统支持开展长期野外实验研究。FACE野外实测数据可反映自然生境中，植物与生态系统对本世纪末可能出现的大气CO2浓度的响应特征。更多相关信息可查阅：http://cdiac.ess-dive.lbl.gov/ftp/FACE/nzdata/yield.txt