德克萨斯湾的 LTAR 综合牧场共同实验。

IF 2.2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Merilynn C. Schantz, Douglas R. Smith, Daren Harmel, Douglas J. Goodwin, Doug R. Tolleson, Javier M. Osorio Leyton, K. Colton Flynn, Jenifer L. Yost, Kelly R. Thorp, Jeffrey G. Arnold, Michael J. White, Kabindra Adhikari, Chad Hajda
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引用次数: 0

摘要

极端天气和气候事件越来越频繁,直接影响到综合牧场的生态结构和功能。虽然大平原长期以来经常受到干旱、洪水、放牧和火灾的干扰,但这些干扰的频率和程度的增加会降低生态恢复能力,这主要取决于管理方法。与现行做法相比,根据系统生态学设计的适应性牧场资源管理替代战略应能提高对干扰的抵抗力和复原力。要确定替代战略的生态和经济价值,需要在大空间范围内进行长期评估。长期农业生态系统研究网络已经建立,目的是评估美国大陆 18 个战略地点和十年时间尺度内替代方法与现行方法之间的差异。该网络中的一个重要综合牧场是德克萨斯湾,位于德克萨斯州中部黑地草原的里塞尔分水岭。在这个研究地点,目前正在评估替代性放牧管理策略和现行放牧管理策略之间的差异。替代策略的设计结合了对该地点和物种生态的了解以及现代工具和技术。而现行做法则是实施传统的全年连续放牧系统,冬季主要依靠干草和补充蛋白质。研究结果将为牧场管理者提供经济可行的适应性管理选择,以提高极端和频繁干扰事件后的生态恢复能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The LTAR Integrated Grazing Land Common Experiment at the Texas Gulf

The LTAR Integrated Grazing Land Common Experiment at the Texas Gulf

Extreme weather and climate events have become more frequent and directly affect the ecological structure and function of integrated grazing lands. While the Great Plains have experienced a long history of regular disturbances from drought and floods, grazing, and fires, the increased frequency and magnitude of these disturbances can reduce ecological resilience, largely depending on management practices. Alternative strategies designed to adaptively manage grazing land resources based on the ecology of the system should increase the resistance and resilience to disturbances when compared to prevailing practices. Determining the ecologic and economic value of alternative strategies will require long-term evaluations across large spatial scales. The Long-Term Agroecosystem Research network has been established to evaluate the differences between alternative and prevailing practices among 18 strategically located sites and across decadal time scales throughout the continental United States. A key integrated grazing land site within this network is the Texas Gulf located at the Riesel Watersheds in the Blackland Prairie of Central Texas. At this study site, the differences between alternative and prevailing grazing management strategies are now being evaluated. The alternative strategy was designed using a combination of knowledge of the site and species ecology with modern-day tools and technologies. Alternatively, the prevailing practice implements a conventional year-round continuous grazing system with heavy reliance on hay and supplemental protein during winter. Results will provide grazing land managers with economically viable adaptive management choices for increasing ecological resilience following extreme and frequent disturbance events.

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来源期刊
Journal of environmental quality
Journal of environmental quality 环境科学-环境科学
CiteScore
4.90
自引率
8.30%
发文量
123
审稿时长
3 months
期刊介绍: Articles in JEQ cover various aspects of anthropogenic impacts on the environment, including agricultural, terrestrial, atmospheric, and aquatic systems, with emphasis on the understanding of underlying processes. To be acceptable for consideration in JEQ, a manuscript must make a significant contribution to the advancement of knowledge or toward a better understanding of existing concepts. The study should define principles of broad applicability, be related to problems over a sizable geographic area, or be of potential interest to a representative number of scientists. Emphasis is given to the understanding of underlying processes rather than to monitoring. Contributions are accepted from all disciplines for consideration by the editorial board. Manuscripts may be volunteered, invited, or coordinated as a special section or symposium.
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