Jornada Experimental Range (USDA-ARS) annual stocking rates for cattle, horses, and sheep, 1916-2001

This data package contains data on stocking rates for cattle, horses, and sheep on all pastures of the USDA-ARS Jornada Experimental Range beginning in 1916. Grazing goats were infrequent and are therefore included as part of the sheep category. Stocking rates are expressed in animal unit month (AUM), which is based on metabolic weight and average amount of forage needed by each animal unit per month. Total AUM is calculated for each year for each animal unit. This study was completed in 2001 and will not be updated. NOTE: The USDA-ARS discontinued regular updates to this dataset after 2002 because of de-stocking.

本数据包包含1916年起美国农业部农业研究服务局（USDA-ARS）霍纳达试验牧场（Jornada Experimental Range）所有牧场的牛、马和羊的载畜率（stocking rates）数据。放牧山羊的情况较少见，因此被归入羊的类别。载畜率以动物单位月（animal unit month，AUM）表示，该单位基于代谢体重及每个动物单位每月所需的平均饲草量。每年各动物单位的总AUM均已计算得出。本研究于2001年完成，且不会再更新。注：由于去载畜（de-stocking），USDA-ARS于2002年后停止了对该数据集的定期更新。