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首页> 外文期刊>Rangeland Ecology & Management >Management Strategies for Sustainable Beef Cattle Grazing on ForestedRangelands in the Pacific Northwest
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Management Strategies for Sustainable Beef Cattle Grazing on ForestedRangelands in the Pacific Northwest

机译:西北太平洋林地上的可持续肉牛放牧管理策略

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Livestock grazing practices on public and private rangelands throughout the western United States are subject to increasing scrutiny. Much criticism arises from the tendency for livestock to concentrate in riparian areas and to disproportionately use the vegetation to the degree that riparian function and vegetation are compromised. The purpose of this synthesis article is to evaluate grazing-management strategies that encourage beef cattle to use forage resources away from riparian areas and areas where topographical features limit grazing use. Specifically, this paper evaluates individual management strategies and attempts to quantify the changes in distribution patterns and vegetation use. An effective strategy uses water development to encourage uniform distribution. Likewise, timing and duration of grazing have dramatic influences on cattle distribution in riparian and upland range areas. In general, early in the grazing season, when upland forage is green and growing, cattle tend to distribute more uniformly than later in the season, when upland vegetation is dormant and cattle disproportionately use riparian areas. In addition, early in the season, cattle grazing forested rangelands seem to prefer south-facing aspects with more open canopies when compared with late-season distribution patterns when concentration switches to northerly aspects, denser canopies, and more diverse diets. Other factors that appear to influence distribution include cow breed, age, and stage of production. In addition, recent research suggests that as cows age, distribution patterns change: Older cows have been reported to travel further from water than their younger contemporaries as long as adequate forage is available in the uplands. Additional research is needed on beef cattle selection, technological applications, efficient herding practices, supplementation strategies, and whole-range management systems that encourage the sustainable use of rangeland resources.
机译:在美国西部的公共和私人牧场上,放牧牲畜的做法受到越来越多的审查。由于牲畜趋向于集中在河岸地区并过度利用河岸功能和植被的程度而大量使用植被,这引起了许多批评。该综合文章的目的是评估放牧管理策略,这些策略鼓励肉牛在河岸地区和地形特征限制放牧使用的地区以外使用草料资源。具体来说,本文评估了个体管理策略,并试图量化分布格局和植被利用的变化。一个有效的策略是利用水资源开发来鼓励统一分配。同样,放牧的时间和持续时间对河岸地区和高地地区的牛群分布也有重大影响。通常,在放牧季节的早期,当高地牧草变绿并在生长时,与高海拔地区的植物处于休眠状态并且牛不成比例地使用河岸地区相比,牛的分布趋于均匀。另外,在季节初,放牧的林地牧场似乎更喜欢朝南的地区,而当浓度向北侧转移,冠层较密,饮食更加多样化时,则与后期分布模式相比,冠层更加开放。其他影响分布的因素包括母牛的品种,年龄和生产阶段。此外,最近的研究表明,随着奶牛年龄的增长,分布方式也发生了变化:据报道,只要高地上有足够的草料,大奶牛比年轻奶牛从水上走得更远。需要对肉牛的选择,技术应用,有效的放牧做法,补充策略以及鼓励牧场资源可持续利用的全程管理系统进行更多研究。

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