Aboveground Net Primary Productivity across inter-annual precipitation variability treatments at a grassland site in the Jornada Basin, 2009-ongoing

This ongoing dataset contains annual aboveground net primary
productivity (ANPP) estimates from a study at the Jornada Experimental
Range (JER) in southern New Mexico. The study was designed to assess
the effect of interannual variability in precipitation on average
aboveground net primary productivity (ANPP) in Chihuahuan Desert
grasslands. The study began in 2009, has five annual precipitation
treatments, and contains 50 plots (10 per treatment). Precipitation
treatments are 1) ambient precipitation, 2) alternating +50% and -50%
precipitation, 3) alternating -50% and +50% precipitation, 4)
alternating + 80% and -80% precipitation, and 5) alternating -80% and
+80% precipitation. Ambient precipitation plots serve as controls and
have no water manipulation. ANPP estimates are derived from vegetation
cover measurements.

本持续数据集收录了新墨西哥州南部霍纳达实验牧场（Jornada Experimental Range, JER）一项研究的年度地上净初级生产力（aboveground net primary productivity, ANPP）估算结果。该研究旨在评估降水年际变化对奇瓦瓦沙漠草原平均地上净初级生产力（ANPP）的影响。研究始于2009年，共设置5种年度降水调控处理，包含50个样地（每个处理组对应10个样地）。5种降水调控处理分别为：1）自然降水组；2）交替增加50%与减少50%降水组；3）交替减少50%与增加50%降水组；4）交替增加80%与减少80%降水组；5）交替减少80%与增加80%降水组。其中自然降水样地作为对照组，未开展任何水分调控操作。ANPP估算值基于植被盖度测量数据推导得出。