沿着41平行线的大平原半个世纪的产量增长

IF 1.3 4区经济学 Q3 ECONOMICS

Land Economics Pub Date : 2023-04-21 DOI:10.3368/le.99.4.041421-0039r2

Federico J. Trindade, Lilyan E. Fulginiti, Richard K. Perrin

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引用次数: 1

摘要

我们研究了半个世纪以来美国大平原上800英里横断面的作物产量增长情况。增长的主要贡献者是非特定技术变革+53%，灌溉+26%，肥料+13%和化学品+10%。环境变化很小，影响不大。广泛的农业气候条件产生了显著的次区域偏差。灌溉在西部干旱和温暖的地区很重要，而肥料和化学药品在潮湿的东部更重要。在东部的雨养地区，对天气的敏感性增加了，而在西部的灌溉区，对天气的敏感性降低了。

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A half century of yield growth along the forty-first parallel of the Great Plains

Abstract

We examine a half-century of crop yield growth along an 800-mile transect in the U.S. Great Plains. The main contributors to growth were non-specific technical change +53%, irrigation +26%, fertilizer +13% and chemicals +10%. Environmental changes were small and had a minor impact. The wide range of agroclimatic conditions produced significant sub-regional deviations. Irrigation was important in the more arid and warmer areas of the west, while fertilizer and chemicals were more important in the humid east. Sensitivity to weather has increased in the rainfed regions of the east while it has decreased in irrigated regions of the west.

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来源期刊

Land Economics Multiple-

CiteScore

2.60

自引率

0.00%

发文量

期刊介绍： Land Economics is dedicated to the study of land use, natural resources, public utilities, housing, and urban land issues. Established in 1925 by the renowned economist and founder of the American Economic Association, Richard T. Ely at the University of Wisconsin, Land Economics has consistently published innovative, conceptual, and empirical research of direct relevance to economists. Each issue brings the latest results in international applied research on such topics as transportation, energy, urban and rural land use, housing, environmental quality, public utilities, and natural resources.