منابع مشابه
Climate variation explains a third of global crop yield variability
Many studies have examined the role of mean climate change in agriculture, but an understanding of the influence of inter-annual climate variations on crop yields in different regions remains elusive. We use detailed crop statistics time series for ~13,500 political units to examine how recent climate variability led to variations in maize, rice, wheat and soybean crop yields worldwide. While s...
متن کاملUnderstanding the weather signal in national crop-yield variability: Weather-signal in crop-yield variability
Year-to-year variations in crop yields can have major impacts on the livelihoods of subsistence farmers and may trigger significant global price fluctuations, with severe consequences for people in developing countries. Fluctuations can be induced by weather conditions, management decisions, weeds, diseases, and pests. Although an explicit quantification and deeper understanding of weather-indu...
متن کاملInteractions between temperature and drought in global and regional crop yield variability during 1961-2014
Inter-annual crop yield variation is driven in large parts by climate variability, wherein the climate components of temperature and precipitation often play the biggest role. Nonlinear effects of temperature on yield as well as interactions among the climate variables have to be considered. Links between climate and crop yield variability have been previously studied, both globally and at regi...
متن کاملClassification of Crop Yield Variability in Irrigated Production Fields
yield map represent grain mixed from a certain area, and some uncertainty is associated with the exact size Crop yield maps reflect stable yield patterns and annual random and geographical location of this area as well as meayield variation. Procedures for classifying a sequence of yield maps surement error. For the same location, this uncertainty to delineate yield zones were evaluated in two ...
متن کاملUnderstanding the weather signal in national crop-yield variability
31 Year-to-year variations in crop yields can have major impacts on the livelihoods of subsistence farmers 32 and may trigger significant global price fluctuations with severe consequences for people in developing 33 countries. Fluctuations can be induced by weather conditions, management decisions, weeds, diseases, 34 and pests. Although an explicit quantification and deeper understanding of w...
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ژورنال
عنوان ژورنال: Environmental Research Letters
سال: 2014
ISSN: 1748-9326
DOI: 10.1088/1748-9326/9/11/114011