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- W2352643566 abstract "Based on the per unit area grain yield data throughout China at the level of province, three indexes,which reflect the risk level of grain yield of China from different angle are defined,namely:the annual decrease rate,the annual variation coefficient and the risk probability.The method of iterative self-organization dynamics assemble is adopted to divide China into several risk regions at different risk levels on the basis of the indexes.The result demonstrates the outlook and risk level of the grain yield in the past fifty years,which would provide a reference for policy makers to plan crop production and make risk decision.Furthermore,the reason of regional risk difference from the factors of disaster-inducing environment,disaster-inducing factors and productivity is also discussed." @default.
- W2352643566 created "2016-06-24" @default.
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- W2352643566 date "2002-01-01" @default.
- W2352643566 modified "2023-09-23" @default.
- W2352643566 title "China Grain Yield Risk Division at the Level of Province" @default.
- W2352643566 hasPublicationYear "2002" @default.
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