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禾禾巴(Simmodsia chinensis)是一种可供家畜及野生动物采食的常绿灌木,从亚利桑那中部到墨西哥西北部以及加里佛尼亚Baja地区的草原区都有分布。目前放牧时间的长短是根据利用率的高低来确定的,而利用率则根据被采食的嫩枝百分数来估测。本研究通过测量嫩枝的直径来估测禾禾巴的利用率,其结果更为精确,但较为复杂、费时。
Simmodsia chinensis is an evergreen shrub that forages on livestock and wildlife and is distributed from central Arizona to northwestern Mexico and the prairie region of Baja, California. The current grazing time is based on the level of utilization to determine the utilization rate is based on the number of young shoots to be estimated. In this study, we estimated the utilization of Hepa by measuring the diameter of shoots. The result is more accurate, but more complicated and time-consuming.