Utah State University, Department of Environment and Society, 5215 Old Main Hill, Logan, UT 84322-5215, USA.
J Environ Manage. 2012 Nov 30;111:78-86. doi: 10.1016/j.jenvman.2012.06.016. Epub 2012 Jul 24.
Enhanced carbon sequestration is one means to mitigate climate change. Rangelands are arid and semi-arid lands, typified by relatively low and variable levels of net primary productivity, where carbon sequestration might be increased via alterations in land management. Rangelands are vast in size and dominate the land area in the western US and worldwide. It has been estimated that privately owned rangelands in the US could sequester an additional 60 million tons of carbon annually, roughly equal to five percent of the US annual CO(2) emissions. Ranchers are the target population that could implement changes in rangeland management to promote carbon sequestration, but little is known about how they might receive such programs. Therefore, for Utah, we conducted a combined mail and telephone survey of 495 randomly selected ranchers to assess their knowledge of and attitude toward carbon sequestration, possible benefits of carbon sequestration as perceived by ranchers, and factors influencing their likelihood of participating in carbon sequestration programs. Overall, despite that 70 percent of respondents had little or no self-reported knowledge about carbon sequestration, 63 percent had negative views about it. Ranchers reporting the most knowledge also tended to have the most negative attitudes. The least important benefit that might accrue to ranchers from carbon sequestration was seen as climate change mitigation, while the most important benefit was improved land stewardship. Only four percent of respondents indicated an unconditional willingness to participate in carbon sequestration programs, but 71 percent could be interested depending on new information received. Before carbon sequestration programs are developed for rangelands, further research is needed to clarify why more knowledge of carbon sequestration can lead to greater skepticism of relevant programs. We respect this finding, as it may be based on well-founded rancher concerns such as technical or administrative efficacy. If such concerns can be overcome, extension efforts should be tailored to emphasize the ecological merits of carbon sequestration for rangeland management, which will facilitate the ability of ranchers to achieve their personal goals.
增强碳封存是缓解气候变化的一种手段。牧场是干旱和半干旱地区,其净初级生产力水平相对较低且变化较大,通过改变土地管理方式,碳封存量可能会增加。牧场的面积非常大,在美国西部和全球范围内占据了大部分土地面积。据估计,美国私人拥有的牧场每年可以额外封存 6000 万吨碳,大致相当于美国每年二氧化碳排放量的 5%。牧场主是可以实施牧场管理变化以促进碳封存的目标人群,但人们对他们如何接受此类计划知之甚少。因此,我们对犹他州的 495 名随机牧场主进行了邮件和电话相结合的调查,以评估他们对碳封存的了解程度和态度、牧场主认为的碳封存可能带来的好处,以及影响他们参与碳封存计划的可能性的因素。总体而言,尽管 70%的受访者对碳封存的了解很少或没有自我报告,但 63%的受访者对此持负面看法。报告了解最多的牧场主也往往持最负面的态度。牧场主认为碳封存最不重要的好处是缓解气候变化,而最重要的好处是改善土地管理。只有 4%的受访者表示无条件愿意参与碳封存计划,但 71%的受访者可能会感兴趣,这取决于他们收到的新信息。在为牧场制定碳封存计划之前,需要进一步研究,以阐明为什么更多地了解碳封存会导致对相关计划的更大怀疑。我们尊重这一发现,因为这可能基于牧场主的合理担忧,例如技术或行政效率。如果这些担忧能够得到克服,推广工作应该根据碳封存对牧场管理的生态价值进行调整,这将有助于牧场主实现个人目标的能力。