NPP Grassland: Central Plains Experimental Range (SGS), USA, 1939-1990, R1

This data set records the productivity of a semiarid shortgrass prairie steppe located in the Central Plains Experimental Reserve (CPER)/Pawnee National Grassland in north-central Colorado. There are nine data files (.txt). Four files contain measurements of monthly dynamics of harvested above-ground plant biomass, one file each for untreated, irrigated, fertilized, and irrigated + fertilized plots for the period 1970 to 1975. The fifth file contains annual above-ground NPP estimates for the untreated plot for the period 1970-1974. The sixth file contains long-term ANPP estimated from field harvest measurements made between 1970 and 1990 and by correlation with forage production measurements made between 1939 and 1990. Two additional files provide estimates of above- and below-ground NPP based on peak growing season harvests; one record covers 1970-1972 from the Pawnee site and the other covers 1985-1988 from CPER. The ninth file contains climate data for 1912-1990 from a weather station located at CPER.Revision Notes: This data set has been revised to correct the study site elevation, extend the temporal coverage, and add four data files containing estimates of NPP. Please see the Data Set Revisions section of this document for detailed information.

本数据集记录了位于中北部科罗拉多州中央平原实验站（CPER）/帕威尼国家草地上的半干旱短草草原草原的生产力。该数据集包含九个数据文件（.txt格式）。其中四个文件记录了1970年至1975年间未经处理、灌溉、施肥以及灌溉+施肥的草地地上生物量月度动态变化。第五个文件包含了1970-1974年未经处理草地地上净初级生产力（NPP）的年度估算。第六个文件包含了基于1970年至1990年间的田间收获测量和1939年至1990年间的牧草产量测量相关分析得到的长期地上NPP估算。另外两个文件提供了基于生长旺季收获的地上和地下NPP估算；一个记录了1970-1972年帕威尼站的数据，另一个记录了1985-1988年CPER的数据。第九个文件包含了1912-1990年CPER气象站处的气候数据。修订说明：本数据集已修订，以纠正研究站点的海拔高度、扩展时间覆盖范围，并添加了包含NPP估算的四份数据文件。请参阅本文件的数据集修订部分以获取详细信息。