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沙区光伏设施干扰下近地表输沙通量分析 期刊论文
发表期刊: 干旱区研究. 出版年: 2020, 卷号: 37, 期号: 3, 页码: 739-748
作者:  唐国栋;  蒙仲举;  高永;  郑海峰;  贾瑞庭;  石涛
收藏  |  浏览/下载：57/0  |  提交时间：2021/01/08
sand transport  aeolian sediment flux structure  fitted model  wind profile  photovoltaic power station  the Hobq Desert  
Intake, Reproductive, and Grazing Activity Characteristics of Range Cattle on Semi-arid Rangelands 学位论文
学位授予机构: The University of Arizona.. 出版年: 2016
作者:  Knight;Colt Watson
收藏  |  浏览/下载：20/0  |  提交时间：2019/11/29
DescriptionABSTRACT: Study One - Our objective was to characterize mature range cows based on intake and grazing activity. Starting in the early spring of 2013 4 experiments were conducted. First mature range cows (n = 137) were fitted with radio frequency identification (RFID) and placed in a dry-lot pen equipped with GrowSafe? technology to monitor DMI of alfalfa hay. These data were then used to assign cows a residual feed intake (RFI) value utilizing the National Research Council (NRC) (1996) model to predict intake of beef cattle. Cattle with negative and positive RFI were characterized as low-intake and high-intake  
腾格里沙漠东南部野外风沙流观测 期刊论文
发表期刊: 中国沙漠. 出版年: 2013, 卷号: 33, 期号: 4, 页码: 973-980
作者:  张正偲;  董治宝
收藏  |  浏览/下载：13/0  |  提交时间：2019/11/29
aeolian sediment flux  field observation  fitted model  Tengger Desert