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ningxia(3)
change trend(2)
extreme climate index(2)
period(2)
pollen and spores(2)
temperature(2)
xinjiang(2)
climate and environment change(1)
climate and environment evolution(1)
dpsir model(1)
grey prediction(1)
holocene(1)
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structural equation model(1)
vegetation pattern(1)
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water and soil resources security(1)