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globalchange

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climate change(6)
ecological stoichiometry(3)
around xiangshan mountain area(2)
climate potential productivity(2)
climate-soil potential productivity(2)
crop potential productivity(2)
grassland(2)
middle arid region of ningxia(2)
spring maize(2)
the middle arid region of ningxia(2)
changes in precipitation pattern(1)
desert steppe(1)
fragile ecosystems(1)
glycyrrhiza uralensis(1)
microbial biomass(1)
n deposition(1)
nutrient conservation(1)
nutrient resorption(1)
nutrient uptake(1)
p limitation(1)
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