Plant phenology transect at NPP sites

The phenological stage of all perennial plant species on the 15 NPP sites is recorded on a monthly basis. This allows us to track the influence of weather and of site differences on plant reproduction. The boundaries of the (80m x 80m) study plot are walked and each individual plant of any perennial species in a 1-m belt is examined and its phenology noted (non-reproductive, in bud, in flower, in fruit, or dormant).对15个NPP（Net Primary Productivity）样地上所有多年生植物物种的物候期进行月度记录。借此可追踪气象条件与样地差异对植物繁殖的影响。研究人员沿80m×80m研究样地的边界开展野外调查，对1米宽样带内的所有多年生植物个体逐一核查，并记录其物候状态：非繁殖期、现蕾期、开花期、结果期或休眠期。