Multi-scale fallow land dynamics in a water-scarce basin of the U.S. Southwest

IF 2.7 4区环境科学与生态学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Journal of Land Use Science Pub Date : 2021-05-04 DOI:10.1080/1747423X.2021.1928310

Sophie Plassin, J. Koch, Madison Wilson, K. Neal, J. Friedman, Stephanie Paladino, J. Worden

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引用次数: 2

Abstract

ABSTRACT Improving our understanding of land-use change is critical for water management in semi-arid areas, due to its effects on the hydrological cycle. In the U.S. Southwest, fallowing farmland has become one strategy to reduce water use. Previous to this study, the magnitude and location of changes in fallowing have not been studied in depth. Using the 30-meter Cropland Data Layer, this study assessed the spatial and temporal patterns of fallowing in the U.S. portion of the Rio Grande/Río Bravo Basin (RGB) at three spatial scales (basin, state, and ecoregion) between 2008 and 2018. Our results do not show evidence of an increasing trend in fallowing at the basin level. However, the spatio-temporal patterns differed considerably among states and ecoregions, revealing hotspots of fallowing. By showing that land fallowing is not a widespread practice across the basin, our findings indicate that the potential of this strategy to save water has been underused.

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美国西南部一个缺水盆地的多尺度休耕地动态

摘要提高我们对土地利用变化的理解对于半干旱地区的水资源管理至关重要，因为它会影响水文循环。在美国西南部，休耕农田已成为减少用水的一种策略。在这项研究之前，休耕变化的幅度和位置尚未得到深入研究。利用30米农田数据层，本研究评估了2008年至2018年间，在三个空间尺度（盆地、州和生态区）上，里奥格兰德河/布拉沃河流域（RGB）美国部分休耕的空间和时间模式。我们的研究结果没有显示出在流域一级休耕有增加趋势的证据。然而，各州和生态区的时空格局差异很大，揭示了休耕的热点。我们的研究结果表明，休耕土地在整个流域并不是一种普遍的做法，这表明这种节水策略的潜力没有得到充分利用。

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来源期刊

Journal of Land Use Science Environmental Science-Management, Monitoring, Policy and Law

CiteScore

5.40

自引率

6.20%

发文量

期刊介绍： The Journal of Land Use Science provides a central outlet for high-quality articles on theoretical and empirical aspects of land-use science at the interface of social and environmental systems. The Journal brings together an array of research perspectives at multiple temporal, spatial and social scales that contribute a better understanding of land-system dynamics and communicate scientific advances towards attaining land-system sustainability.