Crop productivity in southern Africa is stagnant despite moderate climate trends

David B. Lobell, Richard J. Lee
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Abstract

Southern Africa faces high food insecurity and projected declines in agroclimatic conditions. Multiple satellite measures indicate that cropland productivity has stagnated for most of the region except South Africa in the past 20 years, in contrast to what official crop statistics suggest. Climate trends do not explain this stagnation, with the region experiencing more rainfall and less warming than most climate model projections. A change of course is needed before climate impacts accelerate.

Abstract Image

尽管气候趋势温和,南部非洲的作物产量却停滞不前
南部非洲面临严重的粮食不安全状况和预计的农业气候条件下降。多种卫星测量表明,在过去的20年里,除了南非之外,该地区大部分地区的耕地生产力停滞不前,这与官方作物统计数据所显示的相反。气候趋势不能解释这种停滞,该地区的降雨量比大多数气候模式预测的要多,而变暖程度要低。在气候影响加速之前,我们需要改变方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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