Plant phenology observations at 15 sites at Jornada Basin LTER, 1992-ongoing

This ongoing data package, which began in 1992, contains monthly plant
phenological observations by species at the 15 Net Primary Production
(NPP) study sites at the Jornada Experimental Range (JER) or
Chihuahuan Desert Rangeland Research Center (CDRRC) in Dona Ana
County, New Mexico, USA. Sites were selected to represent the 5 major
ecosystem types in the Chihuahuan Desert (upland grasslands, playa
grasslands, mesquite-dominated shrublands, creosotebush-dominated
shrublands, tarbush-dominated shrublands). For each ecosystem type,
three sites were selected to represent the range in variability in
production and plant diversity; thus the locations are not replicates.
A transect at each site is monitored monthly to assess the following
phenological stages for each species: dormancy, non-reproductive
status, budding, flowering, and fruiting. Sampling methods in the
first years of the study monitored all plant species present but have
been changed to focus on specific species at each site.

本持续更新的数据集包始于1992年，收录了美国新墨西哥州多纳安娜县霍拉诺实验场（Jornada Experimental Range，JER）或奇瓦瓦荒漠牧场研究中心（Chihuahuan Desert Rangeland Research Center，CDRRC）内15个净初级生产力（Net Primary Production，NPP）研究站点的逐月物种级植物物候观测数据。所选站点覆盖奇瓦瓦荒漠的5类主要生态系统类型：高地草原（upland grasslands）、干盐湖草原（playa grasslands）、牧豆树占优灌丛（mesquite-dominated shrublands）、石炭酸灌木占优灌丛（creosotebush-dominated shrublands）、塔布什灌丛占优灌丛（tarbush-dominated shrublands）。每类生态系统选取3个站点，以涵盖生产力与植物多样性的变异梯度，因此这些站点并非重复样地。每个站点布设样带，每月开展监测工作，以记录各物种的以下物候阶段：休眠期、非生殖期、萌芽期、开花期与结实期。研究初期的采样方案会记录样地内所有现存植物物种，但后续已调整为仅针对各站点的特定物种开展采样。