The Nutrient Reduction Index: A minimalist and continuous measure of conservation practice adoption among farmers

IF 2.2 4区 农林科学 Q2 ECOLOGY Journal of Soil and Water Conservation Pub Date : 2024-01-01 DOI:10.2489/jswc.2024.00129
C.D. Shaffer-Morrison, R.S. Wilson
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Abstract

A Nutrient Reduction Index (NRI) was developed to assist investigators who wish to explore the impacts of interventions, individual difference factors, and farm characteristics on nutrient-focused conservation practices. Comparing the effectiveness of different interventions or understanding the effects of different farm and farmer characteristics can be difficult in the absence of a single and standardized measure of conservation practices ([Anderson 2020][1]; [Loken and Gelman 2017][2]; [Lilienfeld and Strother 2020][3]). Across two data sets ( N = 1,452), the continuous NRI was calculated by weighting several in-field practices (tillage, cover crops, and small grains in rotation) by their actual impact on nutrient reduction ([Iowa State University 2019][4]; [Ha et al. 2020][5]). The NRI was shown to have a smoother distribution than individual conservation behaviors, and convergent validity was demonstrated with conservation-related constructs like conservationist identity and use of filtering practices. The NRI also correlated with farm size, greater formal education, and lower farmer age, consistent with previous work regarding general conservation practices. This measure of nutrient reduction practices can help reduce error associated with dichotomization of practice adoption ([MacCallum et al. 2002][6]) and testing multiple measures ([Banerjee et al. 2009][7]; [Anderson 2020][1]), and its weighted nature better reflects the impact of practice adoption on actual nutrient reduction. [1]: #ref-1 [2]: #ref-22 [3]: #ref-20 [4]: #ref-17 [5]: #ref-13 [6]: #ref-26 [7]: #ref-3
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减少养分指数:农民采用保护措施的最低限度连续衡量标准
制定营养素减少指数(NRI)是为了帮助那些希望探索干预措施、个体差异因素和农场特征对以营养素为重点的保护措施的影响的研究人员。在缺乏单一和标准化的保护措施的情况下,比较不同干预措施的效果或了解不同农场和农民特征的影响可能比较困难([Anderson 2020][1];[Loken and Gelman 2017][2];[Lilienfeld and Strother 2020][3])。在两组数据(N = 1 452)中,通过对几种田间实践(耕作、覆盖作物和小粒轮作)对养分减少的实际影响进行加权,计算出连续的 NRI([爱荷华州立大学 2019][4];[Ha 等人 2020][5])。与单个保护行为相比,NRI 的分布更为平滑,并且与保护主义者身份和过滤实践的使用等与保护相关的建构具有收敛有效性。NRI 还与农场规模、较高的正规教育程度和较低的农民年龄相关,这与之前有关一般保护实践的工作相一致。这种减少养分实践的测量方法有助于减少与实践采用二分法([MacCallum 等人,2002 年][6])和测试多种测量方法([Banerjee 等人,2009 年][7];[Anderson,2020 年][1])相关的误差,其加权性质更好地反映了实践采用对实际养分减少的影响。[1]:#ref-1 [2]:#ref-22 [3]:#ref-20 [4]:#ref-17 [5]:#ref-13 [6]:#ref-26 [7]:#参考文献-3
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来源期刊
CiteScore
4.10
自引率
2.60%
发文量
0
审稿时长
3.3 months
期刊介绍: The Journal of Soil and Water Conservation (JSWC) is a multidisciplinary journal of natural resource conservation research, practice, policy, and perspectives. The journal has two sections: the A Section containing various departments and features, and the Research Section containing peer-reviewed research papers.
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