Nutrient cycling of aboveground poplar and Chinese fir at different maturity stages.
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aAnnual nutrient increment + annual nutrient return b∑ (annual biomass increment of each poplar tissue × nutrient concentration of each tissue) c∑ (aboveground litterfall biomass of poplar of each month in the stand × nutrient concentration in litterfall of each month) d(annual nutrient return / annual nutrient uptake) ×100%; e data are from Sheng and Fan (2005). Nutrient cycling of aboveground poplar and Chinese fir at different maturity stages.
创建时间:
2015-05-20



